Error rate measurement system for high speed optical pulse signa

Details Error rate measurement system for high speed optical pulse signa Error rate measurement system for high speed optical pulse signa

1996-06-11

1999-02-09

Negash, Kinfe-Michael

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359181, 371 51, H04B 1008, G06F 1100

Patent

active

058702113

ABSTRACT:
An error rate measurement system measures a bit error rate of an optical pulse train having a very high frequency and a short pulse width such as an optical soliton signal. The error rate measurement system includes: an electric pulse generator which generates a high repetition rate and short pulse width electric pulse signal; an optical intensity modulator which receives an optical pulse signal transmitted through a transmission path in a communication network and the electric pulse signal from the electric pulse generator wherein the optical intensity modulator detects a non-coincidence signal; a delay circuit for delaying the electric pulse signal such that the electric pulse signal synchronizes with the optical pulse signal from the transmission path at the optical intensity modulator; an opto-electric converter for converting the non-coincidence signal from the optical intensity modulator to an electric signal; and a signal processor which receives the electric signal from the opto-electric converter to determine a bit error rate of the optical pulse signal from the transmission path based on the electric signal.

REFERENCES:
patent: 5301197 (1994-04-01), Yamada et al.
patent: 5533055 (1996-07-01), Matzek
patent: 5585954 (1996-12-01), Taga et al.
patent: 5623355 (1997-04-01), Olsen

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