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US 7,065,108 B2Granted
Method of wavelength tuning in a semiconductor tunable laser
AssigneeElectronics and Telecommunications Research Institute
InventorsSahng Gi Park, Moon Ho Park, Ji Myon Lee, Su Hwan Oh, Kyong Hon Kim
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Abstract
A tunable semiconductor laser including a Fabry-Perot filter and an electrode array is disclosed. The propagation direction of the light beam in the cavity can be consecutively shifted applying electric field or current to the electrode and tuning can consecutively performed over the wide wavelength band by the consecutive shift of the angle of the intra cavity laser beam.
Claims15
A tunable semiconductor laser, comprising:
- a curve-shaped waveguide formed on a substrate for guiding light beam;
- an active area formed on a portion of said waveguide for generating the light beam;
- an electrode array formed at one side of said waveguide for changing the propagation direction of the light beam transmitted through said waveguide by applying electric field or currents to a predetermined portion of said waveguide;
- a Fabry-Perot filter for filtering only the light beam having one wavelength selected according to the change of the propagation direction of said light beam;
- and
- a curved mirror for reflecting the light beam having said wavelength passed through said Fabry-Perot filter.
3 more elements
Dependencies are inferred from the claim text.