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US 5,243,609 AGranted
Laser with longitudinal mode selection
AssigneeGeneral Instrument Corporation
InventorDavid R. Huber
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Abstract
A laser is fabricated from an optical transmission medium having a laser cavity with an rare earth (e.g. Erbium) doped portion. At least one longitudinal mode is suppressed using a plurality of series coupled Fabry-Perot cavities, an optical grating, or a combination thereof. Ring lasers, Sagnac cavity lasers, Fox-Smith cavity lasers, and linear structures are disclosed.
Claims15
A laser for providing an optical carrier comprising:
- a laser cavity including an active medium;
- means for pumping said active medium to generate a light beam for output from said laser cavity;
- and
- a grating resonator with a narrow bandpass characteristic in a guided wave portion of said laser cavity;
- wherein said grating resonator selects a desired mode of laser operation.
2 more elements
Dependencies are inferred from the claim text.