Wavelength tunable laser of small size

Details Wavelength tunable laser of small size Wavelength tunable laser of small size

2007-01-02

2007-01-02

Rodriguez, Armando (Department: 2828)

Coherent light generators

Particular beam control device

Tuning

C372S050100

Reexamination Certificate

active

11004907

ABSTRACT:
A wavelength tunable laser device includes: a pair of reflection mirrors; a semiconductor element disposed between the pair of reflection mirrors, the semiconductor element integrating a region for providing an optical gain, a region having a wavelength tunable filter function and a phase control region; and an optical filter disposed between the semiconductor element and one of the pair of reflection mirrors, the optical filter having periodical transmission wavelengths. A wavelength tunable laser device is provided which is easy to be controlled and can be made compact.

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K. Takabayashi, et al.; “Widely (90nm) Wavelength Tunable Laser Using a Semiconductor Optical Amplifier and an Acousto-Optic Tunable Filter;”Proc. of ECOC 2003; vol. 4; pp. 890-891./Discussed in the specification.
P.-J. Rigole, et al.; “114-nm Wavelength Tuning Range of a Vertical Grating Assisted Codirectional Coupler Laser with a Super Structure Grating Distributed Bragg Reflector;”IEEE Photonics Technology Letters; vol. 7; No. 7; Jul. 1995; pp. 697-699./Discussed in the specification.
European Patent Office Communication for corresponding European Search Report on the European patent application No. 04257320 dated Aug. 1, 2005.

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