Optical waveguides – Planar optical waveguide
Patent
1991-10-04
1993-02-09
Ullah, Akm E.
Optical waveguides
Planar optical waveguide
372 50, H01S 319, G02B 610
Patent
active
051858428
ABSTRACT:
An optical waveguide type wavelength filter having a Fabry-Perot resonator portion formed in the waveguide. The Fabry-Perot resonator portion has a length corresponding to the resonator length of the propagated light and formed by cutting at least two suitable gaps in the optical waveguide. By varying the index of refraction of the Fabry-Perot resonator portion by refractive index varying means, the resonator length L of the Fabry-Perot resonator portion is optically varied and, thereby, the filter characteristic of the Fabry-Perot resonator portion can be made variable.
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patent: 4866406 (1989-09-01), Minakata et al.
patent: 5082341 (1992-01-01), Walker
IEEE Journal of Quantum Electonics, vol. QE-20, No. 11, Nov. 1984, pp. 1252-1259; J. M. Hammer: "Closed Form Theory of Multicavity Reflectors and the Output Power of External Cavity Diode Lasers".
Fujitsu Limited
Ullah Akm E.
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