Wavelength tunable VCSEL

Details Wavelength tunable VCSEL Wavelength tunable VCSEL

2005-03-08

2005-03-08

Harvey, Minsun Oh (Department: 2828)

Coherent light generators

Particular resonant cavity

Distributed feedback

C372S043010

Reexamination Certificate

active

06865214

ABSTRACT:
A wavelength tunable VCSEL is provided. The wavelength tunable VCSEL includes a current constricting layer which is formed on a lower distributed Bragg reflector, upper and lower electrodes for laser oscillation, and additional electrodes which are formed on a predetermined region of an upper distributed Bragg reflector from which light is emitted so as to vary a width of an effective resonance region. Compared to an existing VCSEL, the wavelength tunable VCSEL can rapidly change a wavelength of emitted light and prevent the deterioration of gain characteristics of laser oscillation due to variations in the width of the effective resonance region according to variations in a temperature. As a result, a wavelength tunable region of emitted laser can be increased.

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