Reducing scanning errors

Details Reducing scanning errors Reducing scanning errors

1997-12-19

2000-07-04

Palmer, Phan T. H.

Optical waveguides

With optical coupler

Input/output coupler

385 10, 385123, G02B 634

Patent

active

060849959

ABSTRACT:
The use of regularly repeated small sections of pattern in making a complete optical grating may generate unwanted effects, such as side lobes, as a result of the regular repetition of defects in the small sections. Methods are described for disrupting the regularity of the occurrence of such defects in a grating made of a plurality of sections, thereby minimizing the likelihood of the occurrence of unwanted side lobes, for example.

REFERENCES:
patent: 4974930 (1990-12-01), Blyer, Jr. et al.
patent: 5104209 (1992-04-01), Hill et al.
patent: 5830622 (1998-11-01), Canning et al.
patent: 5912999 (1999-06-01), Brennan, III et al.

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