Widened output mode semiconductor optical component and method o

Details Widened output mode semiconductor optical component and method o Widened output mode semiconductor optical component and method o

1992-12-01

1994-01-11

Lee, John D.

Optical waveguides

With optical coupler

Particular coupling function

156630, 385 43, 385 50, G02B 626

Patent

active

052789268

ABSTRACT:
A widened output mode semiconductor optical component such as a laser includes superposed active and passive waveguides. The width of the active waveguide decreases in a rear part of a mode transition section to couple a "narrow" optical mode which is amplified and guided by the active waveguide to a "wide" mode which is guided by the passive waveguide and which has a mode size greater than that of the narrow mode. The width of the passive waveguide then decreases in a front part of this section to couple the wide mode to an even wider circular mode. The invention finds applications in the fabrication of optical heads for optical fiber telecommunication networks.

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patent: 5078516 (1992-01-01), Kapon et al.
patent: 5131060 (1992-07-01), Sakata
Milton et al, "Tapered Velocity Couplers for Integrated Optics: Design," Applied Optics, vol. 14, No. 5, May 1975, pp. 1207-1212.
Burns et al, "Optical Modal Evolution 3-dB Coupler," Applied Optics, vol. 15, No. 4, Apr., 1976, pp. 1053-1064.
Patent Abstracts of Japan, vol. 7, No. 222 (E-201)(1367) Oct. 4, 1983 & JP-A-58 114 476 (Kokusai Denshin).

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