Download or read book Mid infrared Integrated Devices for Optical Chemical Sensing written by Farah Alimagham and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Near and Mid infrared Integrated Photonic Bio chemical Sensing Devices with On chip Spectrometers written by Kyoung Min Yoo and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a recent decade, miniaturized optical sensor devices based on photonic integrated circuits (PICs) have been investigated vigorously due to their exceptional advantages such as high speed, high sensitivity, high-density integration, low cost, compactness, and robustness against the environmental fluctuation by eliminating the assembly and alignment of the free-space optical components. Especially, near- and mid-infrared photonics have intrigued a great interest in various sensing applications including the physical object/environment imaging and mapping, material identification, and chemical/biomolecule sensing due to the strong fundamental vibrational-rotational signatures of the distinct chemical bonds and high transmittance in an ambient atmospheric environment or in-vivo mammalian bio-cells. The basic components constituting the PICs are the micro/nano waveguides to guide the light by the total internal reflection, and the most matured PIC material platforms are typically based on silicon platforms. However, depending on the targeting application's operation scheme and wavelengths, appropriate material platforms and structures should be designed and optimized to minimize material loss and maximize performance. This Ph.D. dissertation focuses on the design, fabrication, and experimental characterization of the various passive photonic components in different material platforms and photonic integrated sensor devices for the mid-infrared (MIR) absorption trace gas sensors, near-infrared (NIR) on-chip spectrometers, and biosensing applications. The first chapter covers the MIR trace gas sensor devices based on the suspended InGaAs membrane waveguides. We designed and compared two different waveguide structures on the III-V material platform considering the monolithic integration of the sensing waveguides with the light sources and detectors in MIR wavelengths. The second chapter demonstrates the NIR spatial heterodyne Fourier transform spectrometer (SHFTS) integrated with a subwavelength grating coupler (SWGC) for the dual-polarization bandpass sampling on the Si3N4 platform to solve the intrinsic trade-off limitation between the resolution and bandwidth. After that, the micro-ring resonator (MRR) biosensor devices integrated with SHFTS for the lab-on-a-chip optical biosensor platform on the silicon-on-insulator wafer were presented which can substitute the external optical spectrum analyzers for detecting the resonance wavelength shift. Finally, a thorough study on the point-of-care SARS-CoV-2 lab-on-a-chip (LoC) optical biosensor platforms is presented, and the recommendations for future research will be discussed

Download or read book Near infrared and Mid infrared Integrated Silicon Devices for Chemical and Biological Sensing written by Yi Zou and published by . This book was released on 2015 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silicon has been the material of choice of the photonics industry over the last decade due to its easy integration with silicon electronics as well as its optical transparency in the near-infrared telecom wavelengths. Besides these, it has very high refractive index, and also a broad optical transparency window over the entire mid-IR till about 8[Mu]m. Photonic crystal is well known that it can slow down the speed of light. It also can provide a universal platform for microcavity optical resonators with high quality factor Q and small modal volumes. The slow light effect, high Q and small modal volumes enhance light-matter interaction, together with high refractive index of silicon can be utilized to build a highly sensitive, high throughput sensor with small footprint. In this research, we have demonstrated highly compact and sensitive silicon based photonic crystal biosensor by engineering the photonic crystal microcavity in both cavity size and cavity-waveguide coupling condition. We have developed solutions to increase biosensor throughput by integrating multimode interference device and improving the coupling efficiency to a slow light photonic crystal waveguides. We have also performed detailed investigations on silicon based photonic devices at mid-infrared region to develop an ideal platform for highly sensitive optical absorption spectroscopy on chip. The studies have led to the demonstration of the first slot waveguide, the first photonic crystal waveguide, and the first holey photonic crystal waveguide and first slotted photonic crystal waveguide in silicon-on-sapphire at mid-infrared. The solutions and devices we developed in our research could be very useful for people to realize an integrated photonic circuit for biological and chemical sensing in the future.

Download or read book Chemical Sensors written by Ghenadii Korotcenkov and published by Momentum Press. This book was released on 2013-01-10 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: Momentum Press is proud to bring to you Chemical Sensors: Simulation and Modeling Volume 4: Optical Sensors, edited by Ghenadii Korotcenkov. This is the fourth of a new multi-volume comprehensive reference work that provides computer simulation and modeling techniques in various fields of chemical sensing and the important applications for chemical sensing such as bulk and surface diffusion, adsorption, surface reactions, sintering, conductivity, mass transport, and interphase interactions. In this fourth volume, you will find background and guidance on: • Approaches used for modeling and simulation of various types of optical sensors such as fiber optic, surface plasmon resonance, Fabry-Pérot interferometers, transmittance in the midinfrared region, luminescence-based devices, and more • Approaches used for design and optimization of optical systems aimed for both remote gas sensing and gas analysis chambers for the nondispersive infrared (NDIR) spectral range • Multiscale atomistic simulation of hierarchical nanostructured materials for optical chemical sensing Chemical sensors are integral to the automation of myriad industrial processes and everyday monitoring of such activities as public safety, engine performance, medical therapeutics, and many more. This multi-volume reference work covering simulation and modeling will serve as the perfect complement to Momentum Press’s 6-volume reference work, Chemical Sensors: Fundamentals of Sensing Materials and Chemical Sensors: Comprehensive Sensor Technologies, which present detailed information related to materials, technologies, construction, and application of various devices for chemical sensing. Each simulation and modeling volume in the present series reviews modeling principles and approaches peculiar to specific groups of materials and devices applied for chemical sensing.

Download or read book MID INFRARED FIBER PHOTONICS written by Stuart Jackson and published by Woodhead Publishing. This book was released on 2021-11-26 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mid-Infrared Fibre Photonics: Glass Materials, Fibre Fabrication and Processing, Laser Sources and Devicess combines the latest glass chemistry, fibre fabrication and post processing techniques to provide a comprehensive reference on the fundamental science and latest research in fibre photonics for the mid-infrared range. The book systematically reviews the key glass materials systems including fluorides, chalcogenides, and oxides. Each materials chapter includes discussion of composition, structure, thermal, optical and mechanical properties, extrinsic and intrinsic loss mechanisms, materials preparation and purification techniques. Then Mid-Infrared Fibre Photonics: Glass Materials, Fibre Fabrication and Processing, Laser Sources and Devicess covers the most relevant fabrication, post-processing, and spectroscopy techniques. Fibre sources are also addressed including fibre sources for continuous wave emission, pulsed emission, and broadband emission. The book concludes with a brief overview of important medical, sensing and defence applications. - Systematic coverage of the most relevant materials for mid-infrared fibre photonics including discussion of composition, structure, thermal, optical and mechanical properties, loss mechanisms, materials preparation and purification techniques - Reviews the key fabrication and processing techniques of mid-infrared fibre technologies - Addresses the important medical, sensing and defence applications

Download or read book Optical Chemical Sensors written by F. Baldini and published by Springer Science & Business Media. This book was released on 2006-05-03 with total page 553 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers optical chemical sensing by means of optical waveguides, from the fundamentals to the most recent applications. The book includes a historical review of the development of these sensors, from the earliest laboratory prototypes to the first commercial instrumentations. The book reprints a lecture by the Nobel Laureate Charles Townes on the birth of maser and laser, which lucidly illustrates the development of new science and new technology.

Download or read book SiGe Photonic Integrated Circuits for Mid infrared Sensing Applications written by Qiankun Liu and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mid-infrared (mid-IR) spectroscopy is a nearly universal way to identify chemical and biological substances, as most of the molecules have their vibrational and rotational resonances in the mid-IR wavelength range. Commercially available mid-IR systems are based on bulky and expensive equipment, while lots of efforts are now devoted to the reduction of their size down to chip-scale dimensions. The use of silicon photonics for the demonstration of mid-IR photonic circuits will benefit from reliable and high-volume fabrication to offer high performance, low cost, compact, lightweight and power consumption photonic circuits, which is particularly interesting for mid-IR spectroscopic sensing systems that need to be portable and low cost. Among the different materials available in silicon photonics, Germanium (Ge) and Silicon-Germanium (SiGe) alloys with a high Ge concentration are particularly interesting because of the wide transparency window of Ge up to 15 μm. In this context, the objective of this thesis is to investigate a new Ge-rich graded SiGe platform for mid-IR photonic circuits. Such new plateform was expected to benefit from a wide transparency wavelength range and a high versatility in terms of optical engineering (effective index, dispersion, ...). During this thesis, different waveguides platforms based on different graded profiles have been investigated. First it has been shown that waveguides with low optical losses of less than 3 dB/cm can be obtained in a wide wavelength range, from 5.5 to 8.5 μm. A proof of concept of sensing based on the absorption of the evanescent component of the optical mode has then been demonstrated. Finally, elementary building blocs have been investigated. The first Bragg mirror-based Fabry Perot cavities and racetrack resonators have been demonstrated around 8 μm wavelength. A broadband dual-polarization MIR integrated spatial heterodyne Fourier-Transform spectrometer has also been obtained. All these results rely on material and device design, clean-room fabrication and experimental characterization. This work was done in the Framework of EU project INsPIRE in collaboration with Pr. Giovanni Isella from Politecnico Di Milano.

Download or read book Frontiers in Chemical Sensors written by Guillermo Orellana and published by Springer Science & Business Media. This book was released on 2006-01-27 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: With their similarity to the organs of the most advanced creatures that inhabit the Earth, sensors are regarded as being the “senses of electronics”: arti?cial eyes and ears that are capable of seeing and hearing beyond the range of - man perception; electronic noses and tongues that can recognise odours and ?avours without a lifetime training; touch that is able not only to feel the texture and temperature of the materials but even to discern their chemical compo- tion. Among the world of chemical sensors, optical devices (sometimes termed “optodes”, from the Greek “the optical way”) have reached a prominent place in those areas where the features of light and of the light-matter interaction show their advantage: contactless or long-distance interrogation, detection sensitivity, analyte selectivity, absence of electrical interference or risks, and lack of analyte consumption, to name just a few. The introduction of optical ?bres and integrated optics has added more value to such sensing since now light can be con?ned and readily carried to dif?cult-to-reach locations, higher information density can be transported, indicator dyes can be immobilised at the distal end or the evanescent ?eld for unique chemical and biochemical sensing (including multiplexed and distributed measurements), optical s- sors can now be subject to mass production and novel sensing schemes have been established (interferometric, surface plasmon resonance, ?uorescence energy transfer, supramolecular recognition . . . ).

Download or read book Thermo optical Devices for Mid infrared Spectroscopy Sensor Protection and Camouflage written by Jonathan L. King (Ph.D.) and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In both a literal and figurative sense, infrared sensing technologies enable us to see the world in new light. Infrared thermography reveals hidden landscapes of temperature variations while infrared spectroscopy can inform us of the radiative properties of materials and uncover molecular fingerprints of matter within our environment. This thesis presents new methods of enhancing, confounding, and protecting infrared sensing technologies, and is sectioned in three parts. First, I demonstrate a new method for infrared spectroscopy, dubbed "Planck-enhanced filter spectroscopy", that utilizes multispectral illumination via incandescence to improve the accuracy and resolution of a simple mid-infrared filter spectroscopy system. Second, I showcase an engineered emitter based on phase-change material SmNiO3 that camouflages against conventional thermography systems by eliminating temperature signatures at each individual wavelength across the long-wave infrared spectrum. Lastly, I demonstrate an integrated optical device based on the phase transition material VO2 that can provide multifunctional modulation capabilities useful for controlling and protecting infrared sensing systems and sources.

Download or read book Mid infrared Optoelectronics written by Eric Tournié and published by Woodhead Publishing. This book was released on 2019-10-19 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mid-infrared Optoelectronics: Materials, Devices, and Applications addresses the new materials, devices and applications that have emerged over the last decade, along with exciting areas of research. Sections cover fundamentals, light sources, photodetectors, new approaches, and the application of mid-IR devices, with sections discussing LEDs, laser diodes, and quantum cascade lasers, mid-infrared optoelectronics, emerging research areas, dilute bismide and nitride alloys, Group-IV materials, gallium nitride heterostructures, and new nonlinear materials. Finally, the most relevant applications of mid-infrared devices are reviewed in industry, gas sensing, spectroscopy, and imaging. This book presents a key reference for materials scientists, engineers and professionals working in R&D in the area of semiconductors and optoelectronics. - Provides a comprehensive overview of mid-infrared photodetectors and light sources and the latest materials and devices - Reviews emerging areas of research in the field of mid-infrared optoelectronics, including new materials, such as wide bandgap materials, chalcogenides and new approaches, like heterogeneous integration - Includes information on the most relevant applications in industry, like gas sensing, spectroscopy and imaging

Download or read book INTERNAL REFLECTION SPECTROSCOPY written by N. J. Harrick and published by . This book was released on 1967 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Introduction to Optoelectronic Sensors written by Giancarlo C. Righini and published by World Scientific. This book was released on 2009 with total page 585 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Preface -- Part I: Optoelectronic Sensors Technologies -- 1. Fiber and Integrated Optics Sensors: Fundamentals and Applications G. C. Righini, A. G. Mignani, I. Cacciari and M. Brenci -- 1. Introduction -- 2. Fiber and Integrated Optics: Fundamentals of Waveguiding -- 3. Waveguide Sensors: Basic Working Principle -- 4. Fiber Optic Sensors -- 5. Long-Period Optical Fiber Grating Sensors -- 6. Micro-structured Fiber Sensors -- 7. Integrated Optic Sensors -- 8. Conclusions -- References -- 2. Fiber Bragg Grating Sensors: Industrial Applications C. Ambrosino, A. Iadicicco, S. Campopiano, A. Cutolo, M. Giordano and A. Cusano -- 1. Introduction -- 2. Fiber Bragg Gratings History -- 3. Fiber Bragg Gratings as Sensors -- 4. Civil Applications -- 5. Aerospace Applications -- 6. Energy Applications -- 7. Oil and Gas Applications -- 8. Transport Applications -- 9. Underwater Applications -- 10. Perspective and Challenges -- References -- 3. Distributed Optical Fiber Sensors R. Bernini, A. Minardo and L. Zeni -- 1. Introduction -- 2. Linear Backscattering Systems -- 3. Non-Linear Backscattering Systems -- 4. Non-Linear Forward-Scattering Systems -- 5. Conclusions -- References -- 4. Lightwave Technologies for Interrogation Systems of Fiber Bragg Gratings Sensors D. Donisi, R. Beccherelli and A. d'Alessandro -- 1. Introduction -- 2. Operating Principle of the Fiber Bragg Grating Sensor -- 3. FBG Interrogation Techniques -- 4. An Integrated Tunable Filter using Composite Holographic Grating -- 5. POLICRYPS Filterbased FBG Sensors Interrogation -- 6. Conclusions -- Acknowledgments -- References -- 5. Surface Plasmon Resonance: Applications in Sensors and Biosensors R. Rella and M. G. Manera -- 1. Introduction -- 2. SPR Theory -- 3. Optical Sensors based on Surface Plasmon Resonance -- 4. Application of SPR in Chemical Sensors and Biosensors -- 5. SPR Instrumentation: From Traditional SPR Instrument to SPR Imaging -- 6. Future Capabilities -- References -- 6. Microresonators for Sensing Applications S. Berneschi, G. Nunzi Conti, S. Pelli and S. Soria -- 1. Introduction -- 2. Whispering Gallery Modes in a Microsphere -- 3. WGM Resonators: Applications in Sensing -- Acknowledgments -- References -- 7. Photonic Crystals: Towards a Novel Generation of Integrated Optical Devices for Chemical and Biological Detection A. Ricciardi, C. Ciminelli, M. Pisco, S. Campopiano, C. E. Campanella, E. Scivittaro, M. N. Armenise, A. Cutolo and A. Cusano -- 1. Introduction -- 2. Photonic Crystals 190; Fundamental Principles -- 3. Functional Photonic Band Gap Components and Devices -- 4. Photonic Crystals for Chemical and Biological Sensing -- 5. Photonic Crystal Fibers Sensors -- 6. Perspectives and Challenges -- References -- 8. Micromachining Technologies for Sensor Applications P. M. Sarro, A. Irace and P. J. French -- 1. Introduction -- 2. Bulk Micromachining -- 3. Surface Micromachining -- 4. Characterization of Thin Film Membranes -- 5. Conclusions and Outlook -- References -- 9. Spectroscopic Techniques for Sensors S. Pelli, A. Chiasera, M. Ferrari and G. C. Righini -- 1. Introduction -- 2. Absorption, Reflectance and Transmission Measurements -- 3. Luminescence Measurements -- 4. Raman and Brillouin Measurements -- 5. Conclusions -- References -- 10. Laser Doppler Vibrometry P. Castellini, G. M. Revel". -- OCLC.

Download or read book Optical Imaging and Sensing written by Jiang Wu and published by John Wiley & Sons. This book was released on 2023-10-23 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understand the future of optical imaging with this cutting-edge guide Optoelectronic devices for imaging and sensing are among the backbones of modern technology. Facilitating the mutual conversion of optical and electrical signals, they have applications from telecommunications to molecular spectroscopy, and their incorporation into photon-involved technologies is only growing. The rapid development of this field makes the need for a fully up-to-date introduction all the more critical. Optical Imaging and Sensing meets this need with a comprehensive guide to the novel materials and devices employed in optical imaging and sensing. Given the current revolution in new imaging materials, an introduction that fully incorporates the latest research is an indispensable tool for scientists and engineers in a huge range of fields. The technologies surveyed here promise to transform public security, 5G and next-generation wireless communication, clinical imaging, and many more. Optical Imaging and Sensing Readers will also find: Detailed discussion of materials including semimetallic graphene, semiconducting black phosphorous, and many more Discussion of devices from infrared photodetectors to nonlinear interferometers A thorough look forward to the future of the field Optical Imaging and Sensing is a useful reference for materials scientists, spectroscopists, semiconductor physicists, and engineers working in any field or industry involving optical imaging or sensing technology.

Download or read book Mid Infrared Photonics in Silicon written by Raji Shankar and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The mid-infrared wavelength region (2-20 μm) is of great utility for a number of applications, including chemical bond spectroscopy, trace gas sensing, and medical diagnostics. Despite this wealth of applications, the on-chip mid-IR photonics platform needed to access them is relatively undeveloped. Silicon is an attractive material of choice for the mid-IR, as it exhibits low loss through much of the mid-IR. Using silicon allows us to take advantage of well-developed fabrication techniques and CMOS compatibility, making the realization of on-chip integrated mid-IR devices more realistic. The mid-IR wavelengths also afford the opportunity to exploit Si's high third-order optical nonlinearity for nonlinear frequency generation applications.

Download or read book On chip Silicon Photonic Waveguide Devices for Biochemical Sensing and Optical Interconnects written by Hai Yan (Ph. D.) and published by . This book was released on 2017 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: On-chip photonic devices based on waveguides receives significant attention for its capability in realizing great performance with high integration density. Two of the most representative area of application are biochemical sensing and optical interconnects. Micro- and nano-scale photonic biosensor has become a fast growing research topic driven by the need of portable bio-detection systems with high sensitivity, high throughput, real-time and label-free detection. Various structures, especially those based on silicon-on-insulator (SOI) substrate, have been demonstrated in research, some of which have been developed into commercially available product. In terms of optical interconnect, extensive research and development is underway to try to break the bottleneck in traditional copper interconnect in modern electronics facilities and devices, from local area network to short-reach data links and even down to on-chip interconnect. Silicon photonics is currently the most promising solution to optical interconnect primarily due to its mature processing technologies. Yet other materials, including electro-optic (EO) polymers, are also widely used in specific applications (e.g. EO modulators) for the benefits of high speed and low energy consumption. In this dissertation, various photonic waveguide devices for biochemical sensing and optical interconnect will be presented. First, biosensors based on photonic crystal (PC) microcavities will be demonstrated. A bandpass filter will be introduced to combine multiple PC microcavity sensors into an array. Array of PC biosensors with different parameters was formed to give a wide dynamic range of detection range. The detection of antibiotics and heavy metals will be covered. Then, a novel structure -- subwavelength grating waveguides (SWG) based biosensors will be introduced and its unique thickness-independent surface sensitivity will be analyzed and demonstrated. Thirdly, I will show a novel one-dimensional PC slot waveguide. It offers a simple, high-efficiency and low-loss phase shifter design for silicon-polymer hybrid EO modulators. Strained silicon waveguide for the generation of mid-infrared wave through difference frequency generation will be covered at last. It will show the potential application of chemical sensing with integrated photonic devices.

Download or read book Lab on Fiber Technology written by Andrea Cusano and published by Springer. This book was released on 2014-07-29 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on a research field that is rapidly emerging as one of the most promising ones for the global optics and photonics community: the “lab-on-fiber” technology. Inspired by the well-established "lab on-a-chip" concept, this new technology essentially envisages novel and highly functionalized devices completely integrated into a single optical fiber for both communication and sensing applications. Based on the R&D experience of some of the world's leading authorities in the fields of optics, photonics, nanotechnology, and material science, this book provides a broad and accurate description of the main developments and achievements in the lab-on-fiber technology roadmap, also highlighting the new perspectives and challenges to be faced. This book is essential for scientists interested in the cutting-edge fiber optic technology, but also for graduate students.

Download or read book Near and Mid infrared Integrated Silicon Devices for Sensing Applications written by Lena Simone Fohrmann and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: