Method and system for reducing unwanted effects of back reflecti

Details Method and system for reducing unwanted effects of back reflecti Method and system for reducing unwanted effects of back reflecti

1996-06-20

1998-11-03

Ngo, John

Optical waveguides

With optical coupler

Input/output coupler

G02B 632

Patent

active

058321535

ABSTRACT:
An optical system is provided for coupling light from one optical waveguide to another. By offsetting the parallel optical axes of two GRIN lenses by a minimum of 50 .mu.m there is a significant reduction in unwanted effects from reflections. Furthermore etalon effects present in many optical coupling systems having parallel inwardly facing end-faces are reduced. The invention obviates the costly solution of for slanting one of the inwardly end-faces of the lens.

REFERENCES:
patent: 4818052 (1989-04-01), Le Pesant et al.
patent: 5090824 (1992-02-01), Nelson et al.
patent: 5276747 (1994-01-01), Pan
patent: 5546180 (1996-08-01), Garel-Jones et al.
patent: 5557692 (1996-09-01), Pan et al.

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