Bragg gratings in waveguides and method of making same

Details Bragg gratings in waveguides and method of making same Bragg gratings in waveguides and method of making same

1996-06-20

1997-07-29

Healy, Brian

Optical waveguides

With optical coupler

Input/output coupler

385123, 359558, 359569, G02B 634, G02B 518

Patent

active

056528183

ABSTRACT:
A method of generating a Bragg reflective grating in a photosensitive optical waveguide using a fringe pattern of electromagnetic radiation involves positioning a mask in the path of the radiation, and moving that mask during the creation of the grating so that different portions of the grating receive different exposures to the radiation so that the resulting grating, though it has a constant physical pitch, has an effective optical pitch that is a function of position along the length of the grating.

REFERENCES:
patent: 5066133 (1991-11-01), Brienza
patent: 5104209 (1992-04-01), Hill et al.
patent: 5327515 (1994-07-01), Anderson et al.
patent: 5367588 (1994-11-01), Hill et al.
patent: 5377288 (1994-12-01), Kashyap et al.
patent: 5430817 (1995-07-01), Vengsarkar

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