Optical transmitter system

Details Optical transmitter system Optical transmitter system

1997-12-04

2000-06-20

Chan, Jason

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359110, 359180, 359182, 359187, H04B 1008, H04B 1402

Patent

active

060784148

ABSTRACT:
An optical transmitter system includes a semiconductor laser, an external modulator, a detector and a frequency-modulation controller. The semiconductor laser transmits an optical signal of a predetermined wavelength onto an optical fiber and a backscattering wave caused by the optical signal is detected by the detector. The frequency-modulation controller controls the semiconductor laser so that the amplitude of a frequency-modulation signal applied to the semiconductor laser is varied depending on a detection signal of the backscattering wave.

REFERENCES:
patent: 4912527 (1990-03-01), Yamazaki
patent: 5315426 (1994-05-01), Aoki
patent: 5453868 (1995-09-01), Bluvelt
patent: 5898719 (1999-04-01), Ryu
patent: 5900959 (1999-05-01), Noda
patent: 5956166 (1999-09-01), Ogata
Y. Aoki, et al., "Stimulated Brillouin Scattering Suppression in IM/DD Optical Fiber Communication Systems with Optical Booster Amplifiers", NEC Corporation, Opto-Electronics Research Laboratories, pp. 75-80.
Japanese Office Action, dated Aug. 18, 1999, with English language translation of Japanese Examiner's comments.
Satoru, Y., "Group Calling System," publication number 01254028, publication date Nov, 10, 1989. Patent Abstracts of Japan, vol. 14, No. 009.

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