Title: V type coupling cavity wavelength switchable semiconductor laser
Application Number: 200610154587 Application Date: 2006.11.09
Publication Number: 1949607 Publication Date: 2007.04.18
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H01S5/10;H01S5/24;H01S5/00
Applicant(s) Name: He Jianjun Address:
Inventor(s) Name: He Jianjun
Attorney & Agent: linfu yu
Abstract:
    The invention discloses a V-type coupling cavity wavelength switchable semiconductor laser, comprising two optical resonant cavities, each comprising a segment of light waveguide and partial reflecting elements at the two ends; the two segments of light waveguides are arranged on a chip to form a V shape, there is no coupling at the opening end but there is a certain cross coupling at the closed end to make the laser have optimum single-mode selectivity; the first optical resonant cavity has a fixed optical length to make its resonant frequency be on a series of independent equidistant channels; the second optical resonant cavity has a certain length difference from the first one, and by changing effective refractivity of partial waveguides in the second optical resonant cavity, it can make the laser wavelengths mutually switched on a series of channels determined by the first optical resonant cavity. And the laser can further comprise one or two branch couplers or directional couplers added outside the cavity to improve coupling efficiency of external devices, and providing added modulating or space switching functions.
Time: 7
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