Wavelength-tunable laser apparatus

Details Wavelength-tunable laser apparatus Wavelength-tunable laser apparatus

2006-08-29

2006-08-29

Menefee, James (Department: 2828)

Coherent light generators

Particular beam control device

Tuning

C372S032000

Reexamination Certificate

active

07099357

ABSTRACT:
A wavelength-tunable laser apparatus includes a semiconductor substrate, a Fabry-Perot (FP) laser, and a planar lightwave circuit. The FP laser is formed on the semiconductor substrate at one side thereof, and has a plurality of longitudinal modes. The planar lightwave circuit is formed on the semiconductor substrate at the other side thereof, and includes a waveguide and a clad surrounding the waveguide with a grating carved into a portion of the waveguide. Light outputted from the FP laser is coupled to the waveguide, the grating reflects a plurality of light beams of different wavelengths, and the FP laser is wavelength-locked by one of the light beams reflected from the grating.

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patent: 0552415 (1992-10-01), None
patent: 2002134833 (2002-05-01), None
“Integrated External Cavity Laser Composed of Spot-Size Converted LD and UV Written Grating in Silica Waveguide on Si;” T. Tanaka et al.; Electronics Letters; Jun. 20, 1996; vol. 32, No. 13; 2 pages.
“45 nm Tunability in C-Band Obtained With External Cavity Laser Including Sampled Fibre Bragg Grating;” H. Helmers et al.;Electronics Letters; Nov. 21, 2002; vol. 38, No. 24; 2 pages.
“100-Ghz Spacing Eight-Channel Light Source Integrated With Gratings and LDs on PLC Platform;” T. Tanaka et al.; IEEE Photonics Technology Letters; Sep. 9, 2002; vol. 12, No. 19; 3 pages.
T. Tanaka et al.; “Integrated External Cavity Laser Composed of Spot-Size Converted LD and UV Written Grating in Silica Waveguide on Si;” IEEE Electronics Letters, vol. 32, No. 13; Jun. 20, 1996; 2 pgs.
H. Helmers et al.; “45 nm Tunability in C-Band Obtained with External Cavity Laser Including Sampled Fibre Bragg Grating;” IEEE Electronics Letters, vol. 38, No. 24; Nov. 21, 2002; 2 pgs.

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