A simple wavelength-locking scheme of a tunable three-electrode distributed Bragg reflector laser for multiple ITU channel application in C band

Nan Ye; Yang Liu; Ling-Juan Zhao

doi:10.1117/12.870654

12 November 2010 A simple wavelength-locking scheme of a tunable three-electrode distributed Bragg reflector laser for multiple ITU channel application in C band

Nan Ye, Yang Liu, Ling-Juan Zhao

Author Affiliations +

Proceedings Volume 7844, Semiconductor Lasers and Applications IV; 784410 (2010) https://doi.org/10.1117/12.870654
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

In this paper, a simple wavelength-locking scheme for a tunable distributed Bragg reflector laser is presented. A 1*2 wide band fiber coupler as the function of beam splitter forms two optical paths with evenly separated power, one for wavelength monitoring and the other for power reference. For wavelength monitoring, two single mode fiber collimators- one as a transmitter and the other as a receiver-form a collimated light path for laser beam and a highly stable air-paced Etalon inserted between them is used as an optical frequency discriminator to lock the laser wavelengths to several ITU channels maintain 100GHz or 0.8 nm channel spacing in C band. Meanwhile, a photodetector connected with receiving collimator by a FC/PC connector turns the optical signal into electronic signal. For power reference, one of the coupler output pots is directly connected with a similar photodetector. Then wavelength shifting signal proportional to the power differences between two optical paths could be feed backed to the phase region or DBR region for stabilizing the laser output wavelength.

Citation Download Citation

Nan Ye, Yang Liu, and Ling-Juan Zhao "A simple wavelength-locking scheme of a tunable three-electrode distributed Bragg reflector laser for multiple ITU channel application in C band", Proc. SPIE 7844, Semiconductor Lasers and Applications IV, 784410 (12 November 2010); https://doi.org/10.1117/12.870654

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