Abstract

This paper describes the high performance of narrow-beam divergence spot size converter (SSC) integrated separately confined heterostructure (SCH) LD. The upper optical confinement layer (OCL) and the butt-coupled tapered thickness waveguide were regrown simultaneously, which not only offered the separated optimization of the active region and the integrated spotsize converter, but also reduced the difficulty of the butt-joint selective regrowth. The threshold current was as low as 5.4 mA, the output power at 55 mA was 10.1 mW, the vertical and horizontal far field divergence angles were as low as 9oand 15o, and the 1-dB misalignment tolerances were 3.6 and 3.4 ?m, respectively.

© 2005 Chinese Optics Letters

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H. Kobayashi, E. Ekawa, N. Okazaki, O. Aoki, S. Ogita, and H. Soda, IEEE Photon. Technol. Lett. 6, 1080 (1994).

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T. V. Caenegem, I. Moerman, and P. Demeester, Prog. Crystal Growth and Charact. 35, 263 (1997).

Other

A. Katz, Indium Phosphide and Related Materials: Processing, Technology, and Device (Artech House, London, 1991).

A. Takemoto, H. Hiyuchi, K. Shibata, M. Kato, T. Itagaki, T. Takiguchi, and Y. Hisa, IEICE Trans. Electron. E80-C,


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