Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1996-07-24
1998-12-08
Bacares, Rafael
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359113, 372 50, 385 14, H01B 1000
Patent
active
058478558
ABSTRACT:
An integrated coherent transceiver capable of being operated with only one below threshold FP mode is described which can be used for both receiving downstream signals and transmitting upstream signals with either FSK or ASK format. The device allows the full tuning range of distributed-Bragg-reflector ("DBR") lasers to be utilized to achieve approximately one thousand channels in a local access system with 1 GHz channel spacing. The sensitivity can be further enhanced by obtaining balanced operation (without changing the simple device structure) to cancel the laser intensity noise.
REFERENCES:
patent: 5117469 (1992-05-01), Cheung et al.
patent: 5144637 (1992-09-01), Koch et al.
T.L. Koch et al., "Balanced operation of a GaInAs/GaInAsP multiple-quantum-well integrated heterodyne receiver", IEEE Photon. Technol. Lett., vol. 2, pp. 577-580, 1990.
F.S. Choa et al., IEEE Photon. Technol. Lett., vol. 1, p. 376, 1989.
F.S. Choa et al., "Very High Sidemode-Suppression-Ratio Distributed-Bragg-Reflector Lasers Grown by Chemical Beam Epitaxy", Electronics Letters May 21, 1992, vol. 28 No. 11, p. 1001.
R.A. Linke et al., "Full-Duplex Optical Transmission Using Self-Heterodyne Laser Transceivers", IEEE Photonics Technology Letters, vol. 1, No. 9 Sep. 1989, pp. 278-280.
F.S. Choa et al., "InGaAs/InGaAsP Integrated Tunable Detector Grown by Chemical Beam Epitaxy", Applied Physics Letters Sep. 27, 1993, vol. 63, No. 13, pp. 1836-1838.
Bacares Rafael
Nath Gary M.
Novick Harold L.
University of Maryland Baltimore County
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