Optical module

Details Optical module Optical module

1998-04-15

2000-07-25

Ngo, Hung N.

Optical waveguides

With optical coupler

Input/output coupler

385 93, 385 43, G02B 636

Patent

active

06094515&

ABSTRACT:
An optical module comprises a semiconductor light-emitting device having a near-field pattern elongated in a transverse direction, and an optical fiber having a light incident face which converges light intensity distribution along a longitudinal direction more than that along the transverse direction. Preferably, the semiconductor light-emitting device is a semiconductor laser. Emitted light having a transversely elongated near-field pattern would have a longitudinally elongated far-field pattern. As the optical fiber converges the light intensity distribution along the longitudinal direction more than that along the transverse direction, the light incident thereon can be converged into its core at a high coupling efficiency.

REFERENCES:
patent: 4243399 (1981-01-01), Khoe et al.
patent: 4269648 (1981-05-01), Dakss et al.
patent: 4737004 (1988-04-01), Amitay et al.
patent: 5600744 (1997-02-01), Takahashi
Weidel, E., "Light Coupling From A Junction Laser Into A Monomode Fibre With A Glass Cylindrical Lens On The Fibre End", Optical Communications, vol. 12, No. 1, Sep. 1974, pp. 93-97.
Modavis, et al., "Anamorphic Microlens for Laser Diode to Single-Mode Fiber Coupling", IEEE Photonics Technology Letters, vol. 7, No. 7, Jul. 1995, pp. 798-800.

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