Jin Kul Yu

US Patent:

20020141009, Oct 3, 2002

Filed:

Mar 28, 2001

Appl. No.:

09/820572

Inventors:

Jin Yu - San Diego CA, US
Hongxing Dai - San Diego CA, US
Jin-Yi Pan - San Diego CA, US

International Classification:

H04B010/08
H04J014/02

US Classification:

359/110000, 359/128000

Abstract:

A performance monitoring system for an all-optical network utilizes a multi-port optical switch and measuring instruments, such as an optical spectrum analyzer and a combination of a tunable optical filter and a quality factor calculator, to provide various signal quality parameters for each optical channel in the network. Quality factor calculations for the optical channels are based upon probability density distribution parameters. Performance monitoring is conducted for an all-optical network during normal operations without having to disconnect any of the optical components from the network.