Zobrazeno 1 - 10
of 130
pro vyhledávání: '"R.D. Esman"'
Autor:
P.J. Matthews, R.D. Esman
Publikováno v:
IEEE Potentials. 18:13-15
There have been numerous efforts to use fiber-optic techniques in array antennas. Fiber-optics is attractive for the same reasons it is the technology of choice for telecommunications applications. Advantages include: a natural resistance to electrom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa900eba0b1d6438839cb8572f50c798
https://doi.org/10.1109/45.807272
https://doi.org/10.1109/45.807272
Autor:
Keith J. Williams, R.D. Esman
Publikováno v:
IEEE Photonics Technology Letters. 10:1015-1017
We present photodetector compression measurements to demonstrate the consequences of absorption in undepleted regions close to the depletion region of p-i-n photodiodes. This absorption can modify the frequency response of photodetectors operating ab
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4324797879908885880b3b7dde39fc3e
https://doi.org/10.1109/68.681302
https://doi.org/10.1109/68.681302
Publikováno v:
IEEE Photonics Technology Letters. 10:132-134
The advantages of illumination through the p-contact of p-i-n photodetectors are experimentally and numerically studied. Nonlinearity and compression current measurements are compared to simulations of harmonic distortion for a 3-GHz p-side-illuminat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e73779b7f61da83b739918bfddf8a208
https://doi.org/10.1109/68.651136
https://doi.org/10.1109/68.651136
Publikováno v:
IEEE Photonics Technology Letters. 9:812-814
Nonlinearity measurements of microwave-bandwidth InGaAs metal-semiconductor-metal photodetectors have been performed. The devices show nonlinear characteristics which are similar to p-i-n structures despite a less-uniform electric field within the ab
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0bf9a03bf6a68fe5392d2c6350384d7
https://doi.org/10.1109/68.584999
https://doi.org/10.1109/68.584999
Publikováno v:
IEEE Microwave and Guided Wave Letters. 7:57-59
Fiber-optic links are limited by the large V/sub /spl pi// of commercial modulators and by nonlinearities in the photodiodes used to demodulate the RF signals. Intracavity modulation and carrier suppression is shown to enhance the received microwave
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b00981e85d361742c5279c6b6ffd321e
https://doi.org/10.1109/75.556031
https://doi.org/10.1109/75.556031
Publikováno v:
IEEE Photonics Technology Letters. 8:1373-1375
We present novel (InGa)As photodetectors which exhibit 150 mA continuous photocurrent at 2 W power dissipation. A responsivity of 0.97 A/W at 1319 nm is achieved with greater than 60% external quantum efficiency from 920 to 1650 mm. Measured dark cur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2b437e09d0a0ba3fa76a95cf1b8d02e
https://doi.org/10.1109/68.536659
https://doi.org/10.1109/68.536659
Publikováno v:
Technical Digest. Summaries of papers presented at the Conference on Lasers and Electro-Optics. Postconference Edition. CLEO '99. Conference on Lasers and Electro-Optics (IEEE Cat. No.99CH37013).
Summary form only given. We present a hybrid optoelectronic analog-to-digital converter architecture with a photonic signal sampler based on the time interweaving of spectrally distinct pulses. Broadband mode-locked pulses (/spl tau//sub p//spl sim/1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::938a63ffb5dd62f9e82b2a2332faa830
https://doi.org/10.1109/cleo.1999.834040
https://doi.org/10.1109/cleo.1999.834040
Publikováno v:
1999 IEEE MTT-S International Microwave Symposium Digest (Cat. No.99CH36282).
A novel technique for dynamically forming and steering ultrawideband nulls in the far-field pattern of a time-steered array antenna is demonstrated. The transmitter system is based upon a fiber-optic dispersive prism design which generates an ultrawi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a6fb27a95330c36f0b363670cab1f539
https://doi.org/10.1109/mwsym.1999.779581
https://doi.org/10.1109/mwsym.1999.779581
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
Autor:
R.D. Esman
Publikováno v:
Conference Proceedings LEOS'96 9th Annual Meeting IEEE Lasers and Electro-Optics Society.
The recent progress in fiber optic components and technology has resulted in revived interest in applying fiber optics to microwave functions. This paper presents some of the current capabilities and limitations of fiber optics (primarily for wideban
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d507264f10b1cff4d396a9fc7258071a
https://doi.org/10.1109/leos.1996.571543
https://doi.org/10.1109/leos.1996.571543