Variable wavelength semiconductor laser

Details Variable wavelength semiconductor laser Variable wavelength semiconductor laser

1988-10-17

1989-05-09

Davie, James W.

Coherent light generators

Particular active media

Semiconductor

372 20, 372 32, 372 96, H01S 310

Patent

active

048295353

ABSTRACT:
A variable wavelength semiconductor laser is disclosed, in which light emitting regions, waveguide regions and an active filter region including a diffraction grating equipped with a filter function are integrated on a single substrate, whereby only one resonance wavelength is selected to ensure a stable laser operation at a single wavelength of a small oscillation line-width. Further, both light emitting and waveguide regions are disposed on both sides of the active filter region substantially symmetrically with respect thereto, thereby allowing ease in adjusting the refractive indices of the respective regions.

REFERENCES:
patent: 4719636 (1988-01-01), Yamaguchi

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