Pub Date : 2005-12-05DOI: 10.1109/LEOS.2005.1548113
D. A. Bergstein, R. Irani, M. F. Irani, Charles DeLisi, M. S. Unlu
The resonant cavity imaging biosensor (RCIB) detects binding between target biomolecules in solution and probe biomolecules fixed to a microarray surface. IR light couples resonantly through a 1 cm square cavity constructed from Si/SiO/sub 2/ Bragg mirrors that contains the microarray surface. As the wavelength of the probe beam is swept, an IR camera monitors cavity transmittance at each pixel. The current setup detects 5 nm relief structures etched in the SiO/sub 2/ surface of one of the Bragg mirrors. RCIB improves on existing label-free biosensing techniques by offering the combination of high sensitivity, high throughput, and real-time observation.
{"title":"Resonant cavity imaging biosensor","authors":"D. A. Bergstein, R. Irani, M. F. Irani, Charles DeLisi, M. S. Unlu","doi":"10.1109/LEOS.2005.1548113","DOIUrl":"https://doi.org/10.1109/LEOS.2005.1548113","url":null,"abstract":"The resonant cavity imaging biosensor (RCIB) detects binding between target biomolecules in solution and probe biomolecules fixed to a microarray surface. IR light couples resonantly through a 1 cm square cavity constructed from Si/SiO/sub 2/ Bragg mirrors that contains the microarray surface. As the wavelength of the probe beam is swept, an IR camera monitors cavity transmittance at each pixel. The current setup detects 5 nm relief structures etched in the SiO/sub 2/ surface of one of the Bragg mirrors. RCIB improves on existing label-free biosensing techniques by offering the combination of high sensitivity, high throughput, and real-time observation.","PeriodicalId":317707,"journal":{"name":"Proceedings of the Lightwave Technologies in Instrumentation and Measurement Conference, 2004.","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124193449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2004-12-27DOI: 10.1109/LTIMC.2004.1371015
B. Griffin, M. Connelly
A data acquisition system, which interfaces to an interferometric fiber optic pressure sensor, is presented. This system transmits a modulated signal to the sensing interferometer, demodulates the returning interferometric signal by way of digital signal processing, while simultaneously relaying control and signal data via PC based software.
{"title":"Digital signal processing of interferometric fiber optic sensors","authors":"B. Griffin, M. Connelly","doi":"10.1109/LTIMC.2004.1371015","DOIUrl":"https://doi.org/10.1109/LTIMC.2004.1371015","url":null,"abstract":"A data acquisition system, which interfaces to an interferometric fiber optic pressure sensor, is presented. This system transmits a modulated signal to the sensing interferometer, demodulates the returning interferometric signal by way of digital signal processing, while simultaneously relaying control and signal data via PC based software.","PeriodicalId":317707,"journal":{"name":"Proceedings of the Lightwave Technologies in Instrumentation and Measurement Conference, 2004.","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123104508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2004-12-27DOI: 10.1109/LTIMC.2004.1370998
R. O'Dowd
Fast, rugged measurement of optical outputs from complex semiconductor devices like tunable lasers is pre-requisite for the growth of that sector of the optoelectronics industry. The need to deliver smart transmitters with accompanying control data at low cost is highly dependent on reliable, high-speed test and measurement (T+M). We report principle of operation and performance for a suite of T+M modules that deliver look-up-table (LUT) data that is individual to each device-under-test. This LUT accompanies the laser for its 20-year life-cycle and even incorporates adaptive control to cater for potential ageing. Examples that relate to DBR (10 nm tunability or quarter C-band) and full C-band lasers will be given where the test platform relies on the PXI (PCI derivative) bus with a "de-skilling" graphical user interface. The general concept has also been deployed for HB-LED screening. Optical outputs are power and wavelength while inputs are multiple analogue drive currents that control each laser section; there may be up to eleven electrodes on these laser diode chips. The chip-on-carrier (C-on-C) is first screened by a fast probe station to ascertain full tunability with high power. The butterfly-packaged device is fully characterised later through another application producing the individual digital LUT. Fast wavelength mapping for a multitude of control possibilities is essential at 100 kHz sweeps and slow GPIB must be substituted by PXI bus, which is extended PCI for instrumentation. Custom optics allows photodiodes to work in the wavelength domain. The complete platform, deployable R/D to production, and illustrative results will be described.
{"title":"Automated PXI-based screening and characterisation of tunable lasers","authors":"R. O'Dowd","doi":"10.1109/LTIMC.2004.1370998","DOIUrl":"https://doi.org/10.1109/LTIMC.2004.1370998","url":null,"abstract":"Fast, rugged measurement of optical outputs from complex semiconductor devices like tunable lasers is pre-requisite for the growth of that sector of the optoelectronics industry. The need to deliver smart transmitters with accompanying control data at low cost is highly dependent on reliable, high-speed test and measurement (T+M). We report principle of operation and performance for a suite of T+M modules that deliver look-up-table (LUT) data that is individual to each device-under-test. This LUT accompanies the laser for its 20-year life-cycle and even incorporates adaptive control to cater for potential ageing. Examples that relate to DBR (10 nm tunability or quarter C-band) and full C-band lasers will be given where the test platform relies on the PXI (PCI derivative) bus with a \"de-skilling\" graphical user interface. The general concept has also been deployed for HB-LED screening. Optical outputs are power and wavelength while inputs are multiple analogue drive currents that control each laser section; there may be up to eleven electrodes on these laser diode chips. The chip-on-carrier (C-on-C) is first screened by a fast probe station to ascertain full tunability with high power. The butterfly-packaged device is fully characterised later through another application producing the individual digital LUT. Fast wavelength mapping for a multitude of control possibilities is essential at 100 kHz sweeps and slow GPIB must be substituted by PXI bus, which is extended PCI for instrumentation. Custom optics allows photodiodes to work in the wavelength domain. The complete platform, deployable R/D to production, and illustrative results will be described.","PeriodicalId":317707,"journal":{"name":"Proceedings of the Lightwave Technologies in Instrumentation and Measurement Conference, 2004.","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116095160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2004-12-27DOI: 10.1109/LTIMC.2004.1370992
M. P. Nayaki, A. P. Kabilan, S. Satyanarayanan
The present work reports the design and development of a microcontroller based optoelectronic instrument for estimating the degree of corrosion of metal surfaces by measuring the changes in surface texture. A light beam from an LED source is focused onto the corroded surface. The reflected and scattered light intensities are measured individually and the corrosion factor involving the ratio between the two values is computed and displayed on the LCD by employing a PIC microcontroller. Optical response of the metal surface is found to be a consistent measure of the degree of corrosion of the metals.
{"title":"Design and implementation of a microcontroller based opto electronic instrument for estimation of corrosion in metals","authors":"M. P. Nayaki, A. P. Kabilan, S. Satyanarayanan","doi":"10.1109/LTIMC.2004.1370992","DOIUrl":"https://doi.org/10.1109/LTIMC.2004.1370992","url":null,"abstract":"The present work reports the design and development of a microcontroller based optoelectronic instrument for estimating the degree of corrosion of metal surfaces by measuring the changes in surface texture. A light beam from an LED source is focused onto the corroded surface. The reflected and scattered light intensities are measured individually and the corrosion factor involving the ratio between the two values is computed and displayed on the LCD by employing a PIC microcontroller. Optical response of the metal surface is found to be a consistent measure of the degree of corrosion of the metals.","PeriodicalId":317707,"journal":{"name":"Proceedings of the Lightwave Technologies in Instrumentation and Measurement Conference, 2004.","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128633519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2004-12-27DOI: 10.1109/LTIMC.2004.1370981
S. Bhat, T. Kurzweg, Allon Guez
In this paper, we present a learning control algorithm used in our research of advanced opto-electronic automation, which yields high performance, low cost optoelectronic alignment and packaging through the use of intelligent control theory and system-level modeling. The learning loop technique is activated at a lower sampling frequency for specific and appropriate tasks, to improve the knowledge based control model. Our automation technique is based on constructing an a priori knowledge based model, specific to the assembled package's optical power propagation characteristics. From this model, a piece-wise linear inverse model is created and used in the "feed-forward" loop. This model can be updated for increased accuracy through the learning loop.
{"title":"Advanced packaging automation for opto-electronic systems","authors":"S. Bhat, T. Kurzweg, Allon Guez","doi":"10.1109/LTIMC.2004.1370981","DOIUrl":"https://doi.org/10.1109/LTIMC.2004.1370981","url":null,"abstract":"In this paper, we present a learning control algorithm used in our research of advanced opto-electronic automation, which yields high performance, low cost optoelectronic alignment and packaging through the use of intelligent control theory and system-level modeling. The learning loop technique is activated at a lower sampling frequency for specific and appropriate tasks, to improve the knowledge based control model. Our automation technique is based on constructing an a priori knowledge based model, specific to the assembled package's optical power propagation characteristics. From this model, a piece-wise linear inverse model is created and used in the \"feed-forward\" loop. This model can be updated for increased accuracy through the learning loop.","PeriodicalId":317707,"journal":{"name":"Proceedings of the Lightwave Technologies in Instrumentation and Measurement Conference, 2004.","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130396228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2004-12-27DOI: 10.1109/LTIMC.2004.1371019
P.E. Sanders
{"title":"A current view of fiber optic sensing in the oil & gas industry","authors":"P.E. Sanders","doi":"10.1109/LTIMC.2004.1371019","DOIUrl":"https://doi.org/10.1109/LTIMC.2004.1371019","url":null,"abstract":"","PeriodicalId":317707,"journal":{"name":"Proceedings of the Lightwave Technologies in Instrumentation and Measurement Conference, 2004.","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125715434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2004-12-27DOI: 10.1109/LTIMC.2004.1370986
A. Carranza, C. De Cusatis
A new computer simulation and modeling tool for metropolitan area optical data communication networks is presented. This model addresses the unique requirements of virtual private networks for enterprise data centers, which may include a mixture of protocols including ESCON, FICON, fibre channel, Ethernet, and other links interconnected over dark fiber using wavelength division multiplexing (WDM). The models are capable of automatically designing a WDM network configuration; computing optical link budgets; comparing alternative configurations; and optimizing the design based on user-defined performance metrics. We present simulation results for several topologies and validate the model using experiments conducted on an enterprise network testbed.
{"title":"Modeling of wavelength multiplexing networks for high reliability optical data communication","authors":"A. Carranza, C. De Cusatis","doi":"10.1109/LTIMC.2004.1370986","DOIUrl":"https://doi.org/10.1109/LTIMC.2004.1370986","url":null,"abstract":"A new computer simulation and modeling tool for metropolitan area optical data communication networks is presented. This model addresses the unique requirements of virtual private networks for enterprise data centers, which may include a mixture of protocols including ESCON, FICON, fibre channel, Ethernet, and other links interconnected over dark fiber using wavelength division multiplexing (WDM). The models are capable of automatically designing a WDM network configuration; computing optical link budgets; comparing alternative configurations; and optimizing the design based on user-defined performance metrics. We present simulation results for several topologies and validate the model using experiments conducted on an enterprise network testbed.","PeriodicalId":317707,"journal":{"name":"Proceedings of the Lightwave Technologies in Instrumentation and Measurement Conference, 2004.","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132885271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2004-12-27DOI: 10.1109/LTIMC.2004.1371011
J. Chou, I. Poberezhskiy, B. Bortnik
We report the first continuous-time implementation of the RF-photonic arbitrary waveform generator. The technique utilizes wavelength-to-time mapping of a broadband optical source to convert spectral modulation into a high fidelity time domain signal. The repetition rate of the system is modified to seamlessly interleave adjacent waveforms. As a proof of concept, an ultra-wideband continuous sawtooth is generated with 260 ps duration and fast 30 ps rise time.
{"title":"Ultra-wideband continuous sawtooth generation using RF-photonic technique","authors":"J. Chou, I. Poberezhskiy, B. Bortnik","doi":"10.1109/LTIMC.2004.1371011","DOIUrl":"https://doi.org/10.1109/LTIMC.2004.1371011","url":null,"abstract":"We report the first continuous-time implementation of the RF-photonic arbitrary waveform generator. The technique utilizes wavelength-to-time mapping of a broadband optical source to convert spectral modulation into a high fidelity time domain signal. The repetition rate of the system is modified to seamlessly interleave adjacent waveforms. As a proof of concept, an ultra-wideband continuous sawtooth is generated with 260 ps duration and fast 30 ps rise time.","PeriodicalId":317707,"journal":{"name":"Proceedings of the Lightwave Technologies in Instrumentation and Measurement Conference, 2004.","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122059415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2004-12-27DOI: 10.1109/LTIMC.2004.1370993
A. Obaton, Y. Jaouen, C. Palavicini, C. Lepers
The increasing complexity of specialty optical fibers, such as dispersion compensating and photonic crystal fibers, requires the development of high precision measurement techniques. Phase-sensitive optical low-coherence reflectometry is very well suited because it permits complex reflectivity measurements. This technique allows for an accurate and direct characterization of birefringence and group-velocity dispersion from a single measurement of short fiber samples.
{"title":"Phase-sensitive OLCR technique applied to fiber group-velocity dispersion and birefringence measurements","authors":"A. Obaton, Y. Jaouen, C. Palavicini, C. Lepers","doi":"10.1109/LTIMC.2004.1370993","DOIUrl":"https://doi.org/10.1109/LTIMC.2004.1370993","url":null,"abstract":"The increasing complexity of specialty optical fibers, such as dispersion compensating and photonic crystal fibers, requires the development of high precision measurement techniques. Phase-sensitive optical low-coherence reflectometry is very well suited because it permits complex reflectivity measurements. This technique allows for an accurate and direct characterization of birefringence and group-velocity dispersion from a single measurement of short fiber samples.","PeriodicalId":317707,"journal":{"name":"Proceedings of the Lightwave Technologies in Instrumentation and Measurement Conference, 2004.","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117179874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2004-12-27DOI: 10.1109/LTIMC.2004.1371014
C. Mu, S. Umchid, L. Bansal, P. Levin, M. El-Sherif, A. Daryoush
A broadband fiber-optic based hydrophone probe is reported for measurements of acoustic fields at the frequencies up to 100 MHz. The fiber probe with a tip diameter of about 8 microns provides a desirable measurement tool eliminating the need for spatial averaging corrections. Power budget calculation of the fiber sensor set-up indicated that high power (200 mW) laser source is essential to achieve adequate signal-to-noise ratio. The results of the preliminary measurements allowed the probe sensitivity to be determined. Improvements to the measurement arrangements are discussed to bring this sensitivity (about 1.7 mV/MPa) in line with that theoretically calculated (4.3 mV/MPa).
{"title":"Broadband fiber optic ultrasound hydrophone probe","authors":"C. Mu, S. Umchid, L. Bansal, P. Levin, M. El-Sherif, A. Daryoush","doi":"10.1109/LTIMC.2004.1371014","DOIUrl":"https://doi.org/10.1109/LTIMC.2004.1371014","url":null,"abstract":"A broadband fiber-optic based hydrophone probe is reported for measurements of acoustic fields at the frequencies up to 100 MHz. The fiber probe with a tip diameter of about 8 microns provides a desirable measurement tool eliminating the need for spatial averaging corrections. Power budget calculation of the fiber sensor set-up indicated that high power (200 mW) laser source is essential to achieve adequate signal-to-noise ratio. The results of the preliminary measurements allowed the probe sensitivity to be determined. Improvements to the measurement arrangements are discussed to bring this sensitivity (about 1.7 mV/MPa) in line with that theoretically calculated (4.3 mV/MPa).","PeriodicalId":317707,"journal":{"name":"Proceedings of the Lightwave Technologies in Instrumentation and Measurement Conference, 2004.","volume":"611 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123046080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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