Wavelength-tunable semiconductor laser

Details Wavelength-tunable semiconductor laser Wavelength-tunable semiconductor laser

1988-07-27

1989-10-10

Davie, James W.

Coherent light generators

Particular beam control device

Tuning

372 45, 372 50, 372 96, H01E 319

Patent

active

048736910

ABSTRACT:
A wavelength-tunable semiconductor laser having an active part and an external waveguide part is disclosed. The external waveguide part has a diffraction grating, such as a distributed Bragg reflector, and a quantum well structure optically coupled to the diffraction grating, together with electrodes for impressing an electric field to the quantum well structure. By applying the electric filed to the quantum well structure, the refractive index in the optically coupled diffraction grating/quantum well structure, and light oscillation wavelength in the external waveguide part, can be varied.

REFERENCES:
Murata, et al., "Spectral Characteristics of 1.5 um DBR DC-PBH Laser with Frequency Tuning Region", in IEEE Semiconductor Laser Conference B-3 (1983), pp. 20-21.

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