Optical semiconductor apparatus and optical communication system

Details Optical semiconductor apparatus and optical communication system Optical semiconductor apparatus and optical communication system

1995-11-28

1997-08-05

Williams, Hezron E.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359182, 359188, 359193, 359195, H04B 1000

Patent

active

056548141

ABSTRACT:
An optical semiconductor apparatus having no polarization dependency and an optical communication system using the semiconductor apparatus are provided. In an optical communication system wherein a signal is demultiplexed by using a semiconductor waveguide type filter disposed on a receiver side, two semiconductor lasers disposed on a transmitter side modulate two light signals having different wavelengths using a common modulation signal and transmit the modulated light signals. One of the different wavelengths is accorded, for example, to the TE mode transmission wavelength of the filter, and the other is accorded, for example, to the TM mode transmission wavelength of the filter. On the receiver side, lights at different wavelengths may be branched into two light portions and the branched light portions may be respectively detected by two photodetectors.

REFERENCES:
patent: 4918701 (1990-04-01), Amann et al.
patent: 5008958 (1991-04-01), Cimini, Jr. et al.
patent: 5020153 (1991-05-01), Choa et al.
patent: 5031236 (1991-07-01), Hodgkinson et al.
patent: 5117469 (1992-05-01), Cheung et al.
patent: 5131060 (1992-07-01), Sakata
patent: 5223972 (1993-06-01), Nishimura et al.
patent: 5247382 (1993-09-01), Suzuki
patent: 5299045 (1994-03-01), Sekiguchi
patent: 5309275 (1994-05-01), Nishimura et al.
patent: 5359449 (1994-10-01), Nishimoto et al.
patent: 5379142 (1995-01-01), Handa
patent: 5414549 (1995-05-01), Nishimura et al.
patent: 5479544 (1995-12-01), Ono et al.
patent: 5502783 (1996-03-01), Wu
I.P. Kaminow, et al., Journal of Lightwave Technology, FDM A-FSK Star Network with a Tunable Optical Filter Demultiplexer, vol. 6, No. 9, Sep. 1988, pp. 1406-1414.
M.J. Chawki, et al., Electronics Letters, FSK Transmission System Using Two Electrode DFB Laser as a Tunable FSK Discriminator/Photodetector, vol. 26, No. 15, Jul. 19, 1990, pp. 1101-1224.
K. Oda, et al., "Channel Selection Controller for Optical FDM Distribution Systems," 1989, OCS 89-65.
N. Shimosaka, et al., "A Photonic Wavelength-Divison and Time-Division Hybrid Multiplexed Network Using Acousto-optic Tunable Wavelength Filters For a Broadcasting Studio Application," 1991, OCS 91-83.
T. Numai, et al., "Semiconductor Tunable Wavelength Filters," 1989, OQE 88-65.
Ishikawa, et al., "LiNb0.sub.3 Optical Waveguide Modulator for Bidirectional Transmission in Optical CATV Subscriber Systems," 1991, OCS 91-82.

Affiliated with

Also associated with

Rating

Optical semiconductor apparatus and optical communication system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical semiconductor apparatus and optical communication system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical semiconductor apparatus and optical communication system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1078853