Vertical-Cavity Semiconductor Optical Devices
An optical device comprises: an active semiconductor region ( 130 ), for providing gain to signal light ( 170 ) passing through said active region ( 130 ); a signal-light reflector ( 120 ), for reflecting the signal light ( 170 ) through the active region ( 130 ) in a direction out of the plane of t...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | An optical device comprises: an active semiconductor region ( 130 ), for providing gain to signal light ( 170 ) passing through said active region ( 130 ); a signal-light reflector ( 120 ), for reflecting the signal light ( 170 ) through the active region ( 130 ) in a direction out of the plane of the active region ( 130 ); a pump-light reflector ( 120 ), the pump-light reflector ( 120 ) being arranged to reflect pump light so as to form a standing wave ( 160 ) in the device; and an absorber ( 191 ) that absorbs light at a wavelength of the signal light. The absorber ( 191 ) is arranged at a position in the device at which there is no or substantially no pump light. |
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