Optimization of grating depth and layer thicknesses for DFB lasers

Ching Long Jiang; Rajiv Agarwal; Hide Kuwamoto; Rong-Ting Huang; Ami Appelbaum; Daniel S. Renner; Chin B. Su

doi:10.1117/12.43817

1 July 1991 Optimization of grating depth and layer thicknesses for DFB lasers

Ching Long Jiang, Rajiv Agarwal, Hide Kuwamoto, Rong-Ting Huang, Ami Appelbaum, Daniel S. Renner, Chin B. Su

Proceedings Volume 1418, Laser Diode Technology and Applications III; (1991) https://doi.org/10.1117/12.43817
Event: Optics, Electro-Optics, and Laser Applications in Science and Engineering, 1991, Los Angeles, CA, United States

Abstract

The novel concept of K-stabilizing layer is reported for the first time. The coupling coefficient (K) which determines the characteristics of distributed feedback laser diodes (DFB LDs) has been controlled by optimizing the grating depth and layer thicknesses. The coupling coefficient is less dependent on the variations of grating depth and layer thicknesses if an optimized K- stabilizing layer (lower index material like InP) is inserted between the active layer and the guide layer. The controllability of the coupling coefficient has been demonstrated by the standard deviation of the lasing wavelength and the threshold current across a wafer, 0.74 nm and 2.67 mA, respectively.

Citation Download Citation

Ching Long Jiang, Rajiv Agarwal, Hide Kuwamoto, Rong-Ting Huang, Ami Appelbaum, Daniel S. Renner, and Chin B. Su "Optimization of grating depth and layer thicknesses for DFB lasers", Proc. SPIE 1418, Laser Diode Technology and Applications III, (1 July 1991); https://doi.org/10.1117/12.43817

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