Method and apparatus for multiplexing multiple Sagnac interferometers with single input for source light

摘要

A method and system for transmitting source light to a plurality of Sagnac interferometers includes a first directional coupler that splits the source light into a second light beam and a third light beam. The second light beam supplies light to a first Sagnac interferometer and the second light beam supplies light to a second directional coupler, and the first directional coupler also delivers light returning from the first Sagnac interferometer to a first detector that is used to indicate rotation of the first Sagnac interferometer. The second directional coupler splits the third light beam into a fourth light beam and a fifth light beam, and the fourth light beam supplies light to a second Sagnac interferometer. The second directional coupler delivers light returning from the second Sagnac interferometer to a second detector, and the second detector provides a signal indicative of rotation of the second Sagnac interferometer.

主权项

1. A method of transmitting source light to supply light to a plurality of Sagnac interferometers comprising:
coupling said source light into a first directional coupler to split said source light into a second light beam and a third light beam and supplying light from said second light beam to a first Sagnac interferometer and supplying light from said third light beam to a second directional coupler; further coupling said first directional coupler to deliver light returning from said first Sagnac interferometer to a first detector and operating said first detector to provide a signal indicative of rotation of said first Sagnac interferometer; and coupling said third light beam into said second directional coupler that splits said third light beam into a fourth light beam and a fifth light beam, supplying light from said fourth light beam to a second Sagnac interferometer and further coupling said second directional coupler to deliver light returning from said second Sagnac interferometer to a second detector, and operating said second detector to provide a signal indicative of rotation of said second Sagnac interferometer.