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Numerical Analysis of Beam-Expanders Integrated with Laser Diodes

Makoto TAKAHASHI, Tsukuru OHTOSHI, Masahiro AOKI, Hiroshi SATO, Shinji TSUJI, Kazuhisa UOMI, Ken NAONO

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Summary :

Waveguide characteristics of beam-expanders integrated with laser diodes were numerically analyzed by the beam propagation method (BPM) or the finite-difference time-domain (FD-TD) method. It was demonstrated that the vertically and horizontally hybrid tapered structure or an optimized refractive index in the cladding layer improve the trade-off relationship between fiber coupling efficiency and lasing characteristics. It was also demonstrated that exponentially tapering stripe width can reduce device length without sacrificing device properties.

Publication
IEICE TRANSACTIONS on Electronics Vol.E83-C No.6 pp.845-854
Publication Date
2000/06/25
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section PAPER (Special Issue on Advanced Optical Devices for Next Generation High-Speed Communication Systems and Photonic Networks)
Category
Semiconductor Lasers

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