Semiconductor laser with coupled modulator

Details Semiconductor laser with coupled modulator Semiconductor laser with coupled modulator

H - Electricity

01

S

315/24, 345/32

H01S 5/026 (2006.01) H01S 5/10 (2006.01) H01S 5/14 (2006.01)

Patent

CA 1226359

- 13 - SEMICONDUCTOR LASER WITH COUPLED MODULATOR Abstract A semiconductor heterojunction optical loss modulator section, having an anti-reflection coating on its optical output beam facet, is located with an opposite facet optically coupled to, and closely spaced from, a semiconductor heterojunction laser section having substantially the same cross-section structure as the loss modulator section. The laser section is operated CW in a single mode. In this way, the output beam emanating from the laser section and passing through the anti-reflection coating can be coupled into an optical fiber for transmission purposes. This output beam is substantially single frequency and is intensity modulated, in a singal- pattern independent fashion, in accordance with an electrical signal applied to the loss modulator section.

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