Distortion penalty measurement technique in optical systems base

Details Distortion penalty measurement technique in optical systems base Distortion penalty measurement technique in optical systems base

1997-09-19

1999-12-28

Chan, Jason

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359110, 359161, 359189, H04B 1008, H04B 1000, H04B 1006

Patent

active

060089164

ABSTRACT:
The BER is used as a parameter for evaluating the performance of an optical transmission system. Performance of optical systems is also defined by the Q factor, which indicates the signal-to-noise ratio of the electric signal regenerated by the receiver. In the absence of distortion, Q is univocally determined by the BER. Q is calculated using an estimated BER measured with the path under normal conditions of operation, and a distortion-free Q is determined in the same operating point of the system. The distortion penalty for the path is obtained by comparing the measured Q with the distortion free Q. In addition, the distortion penalty for a transmitter-receiver pair, and a distortion penalty for a transmission link between the transmitter and receiver may be determined.

REFERENCES:
patent: 4799790 (1989-01-01), Tsukamoto et al.
patent: 4823360 (1989-04-01), Tremblay et al.
patent: 5585954 (1996-12-01), Taga et al.

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