Pub Date : 2008-10-17DOI: 10.1109/AVFOP.2008.4653189
K. Liu, C. Qian, A. Kost
We have developed a permanent fiber optic cable splice for avionics applications that provides the capability of cable restoration for field/fleet-environment on-aircraft repair of broken fiber optic cables. Prototype samples have passed stringent environmental research testing requirements specified by NAVAIR whereby the pass-fail criterion was set at 1 dB maximum insertion loss.
{"title":"Avionics fiber optic cable splice - RuggedConnect™","authors":"K. Liu, C. Qian, A. Kost","doi":"10.1109/AVFOP.2008.4653189","DOIUrl":"https://doi.org/10.1109/AVFOP.2008.4653189","url":null,"abstract":"We have developed a permanent fiber optic cable splice for avionics applications that provides the capability of cable restoration for field/fleet-environment on-aircraft repair of broken fiber optic cables. Prototype samples have passed stringent environmental research testing requirements specified by NAVAIR whereby the pass-fail criterion was set at 1 dB maximum insertion loss.","PeriodicalId":142148,"journal":{"name":"2008 IEEE Avionics, Fiber-Optics and Photonics Technology Conference","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126427791","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 : 2008-10-17DOI: 10.1109/AVFOP.2008.4653153
G. Ryu, M. Dagenais
We present a highly sensitive, linear and high spatial resolution approach for the detection of flaws and spurious reflections in avionic optical fiber links based on the technique of incoherent optical frequency domain reflectometry (IOFDR). This approach allows built in test functionality. In particular, we demonstrate the technique of incoherent frequency modulated continuous wave optical frequency domain reflectometry (I-FMCW-OFDR) to detect fiber faults in a 100 m avionic multimode fiber optic link operating at 850 nm. This system can ultimately be engineered to provide diagnosis to the assembly level during line maintenance and provide information useful for preventive maintenance. We demonstrate fault location with accuracy better than 2 mm. We also demonstrate an ultra-high dynamical range approach sufficient for detecting Rayleigh scattering in the multimode fiber. The proposed approach requires very little modification of existing transceivers in present avionic systems, utilizes commercially available digital synthesizer chips, and delivers record performance in terms of sensitivity, dynamic range and spatial resolution for locating the sources of reflection in long fiber optics links. The laser that was used in these measurements is a low cost multimode VCSEL.
{"title":"Incoherent optical frequency domain reflectometry for health monitoring of avionics fiber optics networks","authors":"G. Ryu, M. Dagenais","doi":"10.1109/AVFOP.2008.4653153","DOIUrl":"https://doi.org/10.1109/AVFOP.2008.4653153","url":null,"abstract":"We present a highly sensitive, linear and high spatial resolution approach for the detection of flaws and spurious reflections in avionic optical fiber links based on the technique of incoherent optical frequency domain reflectometry (IOFDR). This approach allows built in test functionality. In particular, we demonstrate the technique of incoherent frequency modulated continuous wave optical frequency domain reflectometry (I-FMCW-OFDR) to detect fiber faults in a 100 m avionic multimode fiber optic link operating at 850 nm. This system can ultimately be engineered to provide diagnosis to the assembly level during line maintenance and provide information useful for preventive maintenance. We demonstrate fault location with accuracy better than 2 mm. We also demonstrate an ultra-high dynamical range approach sufficient for detecting Rayleigh scattering in the multimode fiber. The proposed approach requires very little modification of existing transceivers in present avionic systems, utilizes commercially available digital synthesizer chips, and delivers record performance in terms of sensitivity, dynamic range and spatial resolution for locating the sources of reflection in long fiber optics links. The laser that was used in these measurements is a low cost multimode VCSEL.","PeriodicalId":142148,"journal":{"name":"2008 IEEE Avionics, Fiber-Optics and Photonics Technology Conference","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130912436","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 : 2008-10-17DOI: 10.1109/AVFOP.2008.4653184
Ming Xia, B. Moslehi, B. Mukherjee, A. Behbahani, R. Millar
A paradigm for WDM-enabled networking for supporting aero-engine control systems has been proposed. A layered architecture has been defined. The traffic blocking probability was studied and advantage in terms of reliability was demonstrated by simulation. This paradigm provides an opportunity to develop a platform for implementing distributed control systems. Further effort to upgrade the paradigm from CORIN to DORIN using DWDM will continue.
{"title":"CORIN/DORIN: A WDM-enabled platform for aero-engine control systems","authors":"Ming Xia, B. Moslehi, B. Mukherjee, A. Behbahani, R. Millar","doi":"10.1109/AVFOP.2008.4653184","DOIUrl":"https://doi.org/10.1109/AVFOP.2008.4653184","url":null,"abstract":"A paradigm for WDM-enabled networking for supporting aero-engine control systems has been proposed. A layered architecture has been defined. The traffic blocking probability was studied and advantage in terms of reliability was demonstrated by simulation. This paradigm provides an opportunity to develop a platform for implementing distributed control systems. Further effort to upgrade the paradigm from CORIN to DORIN using DWDM will continue.","PeriodicalId":142148,"journal":{"name":"2008 IEEE Avionics, Fiber-Optics and Photonics Technology Conference","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134244019","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 : 2008-10-17DOI: 10.1109/AVFOP.2008.4653186
P. Williams, T. J. Drapela
Our world is filled with optical fibers carrying information across the room or around the world at rates of up to 25.6 terabits per second. This astounding capacity is the result of about 40 years of development. An integral part of this was the accompanying measurements for characterizing optical fiber and its supporting components. Here we describe some of the optical fiber metrology measurement lessons learned from the telecommunications industry, with the goal of identifying applications for aerospace. We limit our discussion to single-mode fiber issues.
{"title":"Fiber optic measurement considerations for the aerospace industry: Lessons learned from telecommunications","authors":"P. Williams, T. J. Drapela","doi":"10.1109/AVFOP.2008.4653186","DOIUrl":"https://doi.org/10.1109/AVFOP.2008.4653186","url":null,"abstract":"Our world is filled with optical fibers carrying information across the room or around the world at rates of up to 25.6 terabits per second. This astounding capacity is the result of about 40 years of development. An integral part of this was the accompanying measurements for characterizing optical fiber and its supporting components. Here we describe some of the optical fiber metrology measurement lessons learned from the telecommunications industry, with the goal of identifying applications for aerospace. We limit our discussion to single-mode fiber issues.","PeriodicalId":142148,"journal":{"name":"2008 IEEE Avionics, Fiber-Optics and Photonics Technology Conference","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134457443","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 : 2008-10-17DOI: 10.1109/AVFOP.2008.4653161
M. Borbath, C. Middleton, J. Wyatt, R. DeSalvo
The use of optical interferometry within an optical waveguide structure for null frequencies is well understood. We demonstrate a useful application of a related technique using unbalanced outputs of a dual output Mach-Zehnder modulator combined with a balanced detector to provide frequency agile, dynamic co-site interference mitigation. We will show the extreme wideband performance of this all optical solution by rejecting interferer frequencies by over 40 dB. We initially apply this technique to the challenging sub-octave microwave communications environment and suggest that the utility of this technique actually improves up into the millimeter bands.
{"title":"Wideband RF photonic pre-selector for dynamic co-site interference mitigation","authors":"M. Borbath, C. Middleton, J. Wyatt, R. DeSalvo","doi":"10.1109/AVFOP.2008.4653161","DOIUrl":"https://doi.org/10.1109/AVFOP.2008.4653161","url":null,"abstract":"The use of optical interferometry within an optical waveguide structure for null frequencies is well understood. We demonstrate a useful application of a related technique using unbalanced outputs of a dual output Mach-Zehnder modulator combined with a balanced detector to provide frequency agile, dynamic co-site interference mitigation. We will show the extreme wideband performance of this all optical solution by rejecting interferer frequencies by over 40 dB. We initially apply this technique to the challenging sub-octave microwave communications environment and suggest that the utility of this technique actually improves up into the millimeter bands.","PeriodicalId":142148,"journal":{"name":"2008 IEEE Avionics, Fiber-Optics and Photonics Technology Conference","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121954654","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 : 2008-10-17DOI: 10.1109/AVFOP.2008.4653162
R. Forber, G. Zhu, W.C. Wang, B. Bortnik, Wei Liu, H. Fetterman
A single-sideband suppressed-carrier modulator was incorporated into a single mode fiber ring oscillator as an intracavity suppressed carrier transmitter for coherent analog optical links. By using an X-cut LiNbO3 modulator, BPD, low loss SSB filter, and an optical power of 700 mW at the modulator, an SFDR of 121 dB-Hz2/3 was demonstrated. Further improvement on SFDR is possible if a linearized modulator and DSB-SC scheme are used. This suppressed carrier transceiver could provide a significantly larger SFDR than is possible using the IMDD technique and also has important advantages over the low-bias modulation technique. Ultimately, this transceiver scheme may be developed into an ultra-compact hybrid-integrated on-chip design for Navy RF link applications.
{"title":"A single-sideband suppressed-carrier ring laser transmitter for coherent analog optical links","authors":"R. Forber, G. Zhu, W.C. Wang, B. Bortnik, Wei Liu, H. Fetterman","doi":"10.1109/AVFOP.2008.4653162","DOIUrl":"https://doi.org/10.1109/AVFOP.2008.4653162","url":null,"abstract":"A single-sideband suppressed-carrier modulator was incorporated into a single mode fiber ring oscillator as an intracavity suppressed carrier transmitter for coherent analog optical links. By using an X-cut LiNbO3 modulator, BPD, low loss SSB filter, and an optical power of 700 mW at the modulator, an SFDR of 121 dB-Hz2/3 was demonstrated. Further improvement on SFDR is possible if a linearized modulator and DSB-SC scheme are used. This suppressed carrier transceiver could provide a significantly larger SFDR than is possible using the IMDD technique and also has important advantages over the low-bias modulation technique. Ultimately, this transceiver scheme may be developed into an ultra-compact hybrid-integrated on-chip design for Navy RF link applications.","PeriodicalId":142148,"journal":{"name":"2008 IEEE Avionics, Fiber-Optics and Photonics Technology Conference","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127190401","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 : 2008-10-17DOI: 10.1109/AVFOP.2008.4653167
C. Hartmann, F. Quentel, D. Mousseaux, C. Claudepierre, M. Pez
A single wavelength bi-directional and full-duplex optical links implemented on a full-duplex video multiplexing transmission is presented hereafter. The system, main performances and limitations are described and compared with avionics requirements and standards.
{"title":"Bidirectional video transmission for avionics applications","authors":"C. Hartmann, F. Quentel, D. Mousseaux, C. Claudepierre, M. Pez","doi":"10.1109/AVFOP.2008.4653167","DOIUrl":"https://doi.org/10.1109/AVFOP.2008.4653167","url":null,"abstract":"A single wavelength bi-directional and full-duplex optical links implemented on a full-duplex video multiplexing transmission is presented hereafter. The system, main performances and limitations are described and compared with avionics requirements and standards.","PeriodicalId":142148,"journal":{"name":"2008 IEEE Avionics, Fiber-Optics and Photonics Technology Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131100964","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 : 2008-10-17DOI: 10.1109/AVFOP.2008.4653169
R. Pirich, T. Innes, P. Anumolu
A detailed protocol is needed for the terminus endface geometry preparation. Good optical performance can be realized despite an improper endface preparation. The importance of proper endface preparation will not only optimize optical transmittance, but will increase the in-service life of the terminus interconnect. There is a critical need to properly articulate the termini preparation. The many sizes and insert arrangements in fiber-optic connectors have created several overriding maintainability issues, e.g., how to properly test the fiber-optic cable plant and how to properly clean the fiber-optic termini. The need to establish a test point in a fiber-optic connector may require the use of a "breakout" connector system that allows test and measurement equipment to launch and measure optical power from the cable plant connector. The feasibility of using maintenance-breaks, short fiber optic cables that connect to the end of the cable and function as "sacrificial plugs in a system, should be considered.
{"title":"Fiber-optic requirements for advanced platform integration","authors":"R. Pirich, T. Innes, P. Anumolu","doi":"10.1109/AVFOP.2008.4653169","DOIUrl":"https://doi.org/10.1109/AVFOP.2008.4653169","url":null,"abstract":"A detailed protocol is needed for the terminus endface geometry preparation. Good optical performance can be realized despite an improper endface preparation. The importance of proper endface preparation will not only optimize optical transmittance, but will increase the in-service life of the terminus interconnect. There is a critical need to properly articulate the termini preparation. The many sizes and insert arrangements in fiber-optic connectors have created several overriding maintainability issues, e.g., how to properly test the fiber-optic cable plant and how to properly clean the fiber-optic termini. The need to establish a test point in a fiber-optic connector may require the use of a \"breakout\" connector system that allows test and measurement equipment to launch and measure optical power from the cable plant connector. The feasibility of using maintenance-breaks, short fiber optic cables that connect to the end of the cable and function as \"sacrificial plugs in a system, should be considered.","PeriodicalId":142148,"journal":{"name":"2008 IEEE Avionics, Fiber-Optics and Photonics Technology Conference","volume":"181 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134026902","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 : 2008-10-17DOI: 10.1109/AVFOP.2008.4653173
Jaehyuk Shin, N. Dagli
In this paper Mach-Zehnder modulators with 0.3 V drive voltage were presented. These modulators use substrate removed very compact GaAs/AlGaAs optical waveguides for tight optical confinement and buried doped QWs as electrodes. Separation between the doped QW electrodes is only 0.15 mum. This allows the creation of very large modulating electric fields with low voltages. Such large fields create large index changes due to linear electro-optic effect and carrier depletion. Furthermore very strong optical confinement improves the optical overlap hence large material index changes can be utilized very efficiently.
{"title":"Ultra-low voltage GaAs/AlGaAs Mach-Zehnder intensity modulators","authors":"Jaehyuk Shin, N. Dagli","doi":"10.1109/AVFOP.2008.4653173","DOIUrl":"https://doi.org/10.1109/AVFOP.2008.4653173","url":null,"abstract":"In this paper Mach-Zehnder modulators with 0.3 V drive voltage were presented. These modulators use substrate removed very compact GaAs/AlGaAs optical waveguides for tight optical confinement and buried doped QWs as electrodes. Separation between the doped QW electrodes is only 0.15 mum. This allows the creation of very large modulating electric fields with low voltages. Such large fields create large index changes due to linear electro-optic effect and carrier depletion. Furthermore very strong optical confinement improves the optical overlap hence large material index changes can be utilized very efficiently.","PeriodicalId":142148,"journal":{"name":"2008 IEEE Avionics, Fiber-Optics and Photonics Technology Conference","volume":"40 1-8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133073680","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 : 2008-10-17DOI: 10.1109/AVFOP.2008.4653159
V. Urick, J. Diehl, A. Hastings, P. Devgan
This paper briefly reviews the laser and photodiode requirements for high-performance intensity-modulation, direct-detection (IMDD) photonic links. A more thorough analysis is provided in two recent review articles and the references therein. As it is relevant to ongoing avionic programs, we also report on the performance of an erbium-glass microchip laser and a high-power partially-depleted-absorber (PDA) photodiode for analog applications.
{"title":"Laser and photodiode requirements for analog photonics","authors":"V. Urick, J. Diehl, A. Hastings, P. Devgan","doi":"10.1109/AVFOP.2008.4653159","DOIUrl":"https://doi.org/10.1109/AVFOP.2008.4653159","url":null,"abstract":"This paper briefly reviews the laser and photodiode requirements for high-performance intensity-modulation, direct-detection (IMDD) photonic links. A more thorough analysis is provided in two recent review articles and the references therein. As it is relevant to ongoing avionic programs, we also report on the performance of an erbium-glass microchip laser and a high-power partially-depleted-absorber (PDA) photodiode for analog applications.","PeriodicalId":142148,"journal":{"name":"2008 IEEE Avionics, Fiber-Optics and Photonics Technology Conference","volume":"205 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121964701","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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