Zobrazeno 1 - 10
of 118
pro vyhledávání: '"L.T. Nichols"'
Publikováno v:
Journal of Lightwave Technology. 16:192-199
The performance of a dc to 3 GHz externally modulated link utilizing balanced high-power photodetection is presented. Nonlinearity measurements of high power photodiodes show 1 dB compression currents in excess of 55 mA and an output third-order inte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71b3c95c2965d9fb4f7b4876fdf14751
https://doi.org/10.1109/50.661009
https://doi.org/10.1109/50.661009
Autor:
J.E. Roman, Ronald D. Esman, L.T. Nichols, K.J. Wiliams, M.G. Parent, M. Livingston, G.C. Tavik
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 46:2317-2323
We demonstrate, for the first time, fiber-optic remoting of an X-band radar with ultrahigh dynamic range, and show that photonic components can meet the stringent phase noise requirements for remoting modern radars. Fiber optic links were designed an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::45afa33f45c65976f41a0b7cc8d4e13e
https://doi.org/10.1109/22.739217
https://doi.org/10.1109/22.739217
Publikováno v:
OFC/IOOC . Technical Digest. Optical Fiber Communication Conference, 1999, and the International Conference on Integrated Optics and Optical Fiber Communication.
An optimal bias voltage, named the "stabilized quadrature bias voltage," has been identified for Mach-Zehnder modulators, which reduces RF gain instability. A practical remedy for RF gain instability is described.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0fad8a39b9c2c64192fab62ec8cbae64
https://doi.org/10.1109/ofc.1999.766429
https://doi.org/10.1109/ofc.1999.766429
Publikováno v:
1999 IEEE MTT-S International Microwave Symposium Digest (Cat. No.99CH36282).
A fiber-optic system for microwave angle of arrival measurements is demonstrated in an anechoic chamber for the first time. The system consists of a four-channel optical downconverter capable of processing received signals from 2-18 GHz. Direction re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::93d65d1a2591857111b1fa43e43b6d83
https://doi.org/10.1109/mwsym.1999.779528
https://doi.org/10.1109/mwsym.1999.779528
Autor:
R.D. Esman, L.T. Nichols
Publikováno v:
OFC/IOOC . Technical Digest. Optical Fiber Communication Conference, 1999, and the International Conference on Integrated Optics and Optical Fiber Communication.
Techniques to generate optical single-sideband modulation with and without carrier are presented. Various applications are reviewed including combating dispersion effects, RF frequency translation, and grating characterization.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8745ac51bed281154ceb5b91db9ede0a
https://doi.org/10.1109/ofc.1999.768154
https://doi.org/10.1109/ofc.1999.768154
Publikováno v:
OFC/IOOC . Technical Digest. Optical Fiber Communication Conference, 1999, and the International Conference on Integrated Optics and Optical Fiber Communication.
Dynamic range of alternative configurations for a single-channel cascaded-MZM downconverter are compared for the first time to our knowledge. Increased RIN in an optically amplified setup may outweigh increased RF power gain in ultrawideband systems.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fdc1d72aaab318f8bbc16368a6a4a9dd
https://doi.org/10.1109/ofc.1999.768156
https://doi.org/10.1109/ofc.1999.768156
A microwave-photonic frequency shifting system capable of 60 dB image rejection over a DC to 18 GHz bandwidth is described. The final IF band can exist within the original RF frequency range with 60 dB isolation. The system allows antenna remoting vi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a4b648950785d13d58661d697c4dbf8
https://zenodo.org/record/1276109
https://zenodo.org/record/1276109
Publikováno v:
OFC '98. Optical Fiber Communication Conference and Exhibit. Technical Digest. Conference Edition. 1998 OSA Technical Digest Series Vol.2 (IEEE Cat. No.98CH36177).
Summary form only given. Commercial off-the-shelf optoelectronic components can easily be implemented for remoting microwave signals great distances providing essential microwave functionality while also offering less weight, smaller size, less prime
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0bd79d512f73104c19523d785e0e234b
https://doi.org/10.1109/ofc.1998.657465
https://doi.org/10.1109/ofc.1998.657465
Publikováno v:
Conference Proceedings. LEOS'98. 11th Annual Meeting. IEEE Lasers and Electro-Optics Society 1998 Annual Meeting (Cat. No.98CH36243).
Frequency conversion is pervasive in the majority of radio transmitters or receivers. In receiver design, frequency conversion exploits heterodyne detection providing higher dynamic range, greater signal to noise ratios, and allows relaxed signal pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2eef440f0da6e5b47450dc2218abdba
https://doi.org/10.1109/leos.1998.739555
https://doi.org/10.1109/leos.1998.739555
Publikováno v:
Proceedings of the 1998 IEEE Radar Conference, RADARCON'98. Challenges in Radar Systems and Solutions (Cat. No.98CH36197).
We report initial demonstrations of photonic technology meeting the stringent phase noise and signal-to-noise ratio (SNR) requirements for remoting radars. In particular, fiber optic links were used to remote the antenna and transmitter of the Navy A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00c29973e7d0d225c031318ef66aa7e6
https://doi.org/10.1109/nrc.1998.677970
https://doi.org/10.1109/nrc.1998.677970