G - Physics – 02 – F
Patent
G - Physics
02
F
G02F 1/29 (2006.01) G02B 26/08 (2006.01) G02B 27/30 (2006.01) G02F 1/295 (2006.01) H01S 5/026 (2006.01) H01S 5/0625 (2006.01) H01S 5/065 (2006.01) H04B 10/08 (2006.01) H04L 12/42 (2006.01) H04L 29/14 (2006.01)
Patent
CA 2521731
A monolithically integrated wavelength switchable laser comprises three coupled Fabry-Perot cavities. The first cavity has a length such that its resonant wavelengths correspond to a set of discrete operating channels separated by a constant spacing. The second cavity has a slightly different length so that only one resonant wavelength coincides with one of the resonant wavelengths of the first cavity over the operating spectral window. The lasing action occurs at the common resonant wavelength. The two cavities are coupled through a third cavity that produces a certain coupling loss and phase relationship in order to achieve an optimal mode selectivity of the laser. In operation, both the first and the second cavities are forward biased to provide optical gains. The second cavity is tuned by varying the refractive index through an electrical means, resulting in wavelength switching among the set of discrete operating wavelengths as determined by the first cavity.
He Jian-Jun
Na
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