Optical waveguides – With disengagable mechanical connector – Optical fiber to a nonfiber optical device connector
Patent
1997-03-20
2000-01-04
Davie, James W.
Optical waveguides
With disengagable mechanical connector
Optical fiber to a nonfiber optical device connector
359819, 372108, 372109, G02B 636
Patent
active
060102519
ABSTRACT:
A laser diode module provides methods for coupling laser light and optical fiber which achieve a higher coupling efficiency than conventional methods and is cheaper and easier to assemble without losing conventional high-frequency power supply function. In a laser diode module, a high-frequency electric line 11 to a laser diode is located on the upper surface of a photodiode carrier 4 for supporting a photodiode 3; the photodiode carrier 4 is large with a trapezoidal shape. This shape prevents the surface of the photodiode 3 from returning to the laser diode reflected light emitted from the rear of the laser diode 1. A spherical convexo-plane lens 27 is located so that its spherical surface faces the laser diode 1 and is held on a lens holder 22 with a cylindrical hole at an optimum angle to a slant end of an optical fiber core 23 so that a center of curvature 29 of the spherical surface is on an optical axis 19 of laser light which is collimated by a collimating lens 7.
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Patent Abstracts of Japan, vol. 011, No. 015 (P-536), Jan. 16, 1987 & JP 61 189511 A (Canon Inc), Aug. 23, 1986 (English Abstract).
Hatta Tatsuo
Koyanagi Haruki
Davie James W.
Mitsubishi Denki & Kabushiki Kaisha
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