Coherent lightwave transmitter with plurality of optical paths

Details Coherent lightwave transmitter with plurality of optical paths Coherent lightwave transmitter with plurality of optical paths

H - Electricity

04

B

325/1

H04B 10/145 (2006.01) H01S 5/40 (2006.01) H01S 5/14 (2006.01)

Patent

CA 1251261

- 8 - ABSTRACT A coherent lightwave transmitter includes a relatively low power, single frequency laser (10) which provides an injection locking signal to a plurality of higher power lasers (12) located in separate, parallel optical paths (14,16). A modulator (18) is interposed between the single frequency laser and the higher power lasers, and the outputs of the latter are added constructively (25) to form a high power transmitter output (26). Feedback control (28,30) of the optical path lengths is provided to maintain constructive interference.

520837

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