Optical transmission system

Details Optical transmission system Optical transmission system

1996-01-17

1998-06-16

Negash, Kinfe-Michael

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359133, 359156, H04J 1406

Patent

active

057679967

ABSTRACT:
There is provided an optical transmission system that can identify any transmitting stations generating optical beats found within the transmission band being used for optical signals so that any degradation in the quality of the signals being transmitted and adversely affected by the optical beats may be eliminated. The light sources of the transmitting stations giving rise to the optical beats generated in the detector as a result of the differences of the wavelengths of the optical signals coming from the light sources of the transmitting stations and adversely affecting the transmission band being used for the electric signals originating the modulated optical signals are identified by changing the state of polarization of light of the optical signals coming from the light sources of the plurality of transmitting stations. In other words, the light sources of the transmitting stations that are giving rise to the optical beats adversely affecting the transmission band being used for the electric signals originating the modulated optical signals can be identified by changing the state of polarization of light of the optical signals coming from the light sources of the transmitting stations on a one-by-one basis and observing the produced optical beat at the receiving station.

REFERENCES:
patent: 5541758 (1996-07-01), Matsuo et al.
patent: 5589969 (1996-12-01), Taga et al.

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