Optical cross-switch signal monitoring method and system therefor

摘要

A method and device are provided for monitoring a light signal in an optical switch having a first waveguide Ä134Ü and a second waveguide Ä148Ü that intersect a first trench Ä134-148Ü such that optical coupling is dependent upon a fluid being at the first trench Ä134-148Ü, and having a test waveguide Ä152Ü that intersects a second trench Ä134-152Ü such that optical coupling is dependent upon the fluid being at the second trench Ä134-152Ü. By changing the fluid at the first trench Ä134-148Ü to switch the optical switch to cause a light signal to be reflected from the first waveguide Ä134Ü into the second waveguide Ä148Ü and by partially changing the fluid at the second trench Ä134-152Ü to switch the optical switch to cause a portion of the light signal to be reflected from the first waveguide Ä134Ü into the test waveguide Ä152Ü. The portion of the light signal in the test waveguide Ä152Ü can be monitored using a light detector Ä158Ü.