Lasers
AssigneeNorthern Telecom Limited
InventorsKevin Christopher Byron, Kate Sugden
Life of this patent
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Abstract
A laser has an optical laser cavity one end of which is constituted by a partial reflector formed in optical waveguide by an unbalanced Michelson interferometer comprising an optical waveguide splitter/combiner (23; 33) and two optical waveguide Bragg grating reflectors (24a, 24b; 34a, 34b; 44a, 44b).
Claims5
A laser having an optical laser cavity extending between first and second reflecting optical laser cavity ends, and having extending between said reflecting ends a substantially non-reflecting transmission path, wherein said first end is constituted by a partial reflector formed in optical waveguide by an unbalanced Michelson interferometer comprising an optical waveguide splitter/combiner and two optical waveguide Bragg grating reflectors, and wherein optical gain in the laser is provided by a length of optically amplifying waveguide.
A laser having an optical laser cavity extending between first and second reflecting optical laser cavity ends, and having extending between said reflecting ends a substantially non-reflecting transmission path, wherein said first end is constituted by a partial reflector formed in optical waveguide by an unbalanced Michelson interferometer comprising an optical waveguide splitter/combiner and two optical waveguide Bragg grating reflectors, and wherein the optical waveguide Bragg grating reflectors are chirped gratings of different rates of chirp but the same bandwidth.
Dependencies are inferred from the claim text.