Optical semiconductor device, driving method therefor and light

Details Optical semiconductor device, driving method therefor and light Optical semiconductor device, driving method therefor and light

1996-04-25

1998-05-26

Healy, Brian

Coherent light generators

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Semiconductor

372 43, 372 50, 372 27, 372106, 372 96, 385 11, 385 14, H01S 319, G02B 612

Patent

active

057578320

ABSTRACT:
An optical semiconductor device, such as an optical flter and an oscillation polarization selective semiconductor device for switching oscillation polarization modes between two different polarization modes, includes at least one gain region, at least one lossy region, a first control unit for controlling the gain region to control a gain spectrum of the device, and a second control unit for controlling the lossy region to control a cavity loss spectrum of the device such that a polarization dependency with respect to the two different polarization modes is imparted to the cavity loss spectrum. The gain region includes a light waveguide with an active layer which allows the two different polarization modes. The lossy region includes a light waveguide which allows the two different polarization modes.

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Knupfer, B., et al., "Polarization-Insensitive High-Contrast GaAs/AIGaAs Waveguide Modulator Based on the Franz-Keldysh Effect", IEEE Photonics Technology Letters, vol. 5, No. 12, pp. 1386-1388 (Dec. 1993).

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