Method and electrode arrangement for inducing flat frequency mod

Details Method and electrode arrangement for inducing flat frequency mod Method and electrode arrangement for inducing flat frequency mod

1991-09-30

1994-06-28

Davie, James W.

Coherent light generators

Particular beam control device

Modulation

372 32, 372 38, 372 50, 372 96, H01S 310

Patent

active

053253825

ABSTRACT:
In order to induce a flat frequency modulation response in a multi-electrode semiconductor laser which includes an active region and at least one phase control region with no active layer, a modulation current is applied to both of the active region and the phase control region. Further, an improved electrode arrangement for inducing a flat frequency modulation response in a multi-electrode semiconductor laser is present. The semiconductor laser includes three regions: an active region, a phase control region and a Bragg reflector region. Each of the active region, the phase control region and the Bragg reflector region being provided with an electrode for receiving an injection current, wherein the electrode provided for the active layer extends into the phase control region.

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