The Expanded Mode Laser-A Route to Low Cost Optoelectronics (Special Issue On Devices, Packaging Technology, and Subsystems for the Optical Access Network)

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概要

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• At present, the widespread use of optoelectronic components is restricted by their high cost. Up to 90% of the cost of a semiconductor laser is in the packaging, with the fibre-chip alignment the major part. In this paper, an approach to low cost packaging is described, which uses an integrated mode size transformer to match the laser output to the fibre mode. This improves the alignment tolerance of the laser-fibre coupling by more than a factor of three, allowing simple passive alignment approaches to be used. It requires only minor modification to the processing of a standard buried hetero-structure laser, and allows the coupling efficiency to be optimised without compromising the performance of the laser. The design of a silicon submount for passive laser-fibre alignment is described and coupling losses as low as 1.2dB to standard cleaved single mode fibre are reported. The technology that has been developed is generic and its successful application to other optoelectronic devices such as fibre grating lasers, semiconductor optical amplifiers and laser arrays is described.

• 社団法人電子情報通信学会の論文
• 1997-01-25

著者

• Collins John

  Bt Laboratories

• LEALMAN Ian

  BT Laboratories

関連論文

• The Expanded Mode Laser-A Route to Low Cost Optoelectronics (Special Issue On Devices, Packaging Technology, and Subsystems for the Optical Access Network)

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