Incubated Bragg gratings in waveguides

Details Incubated Bragg gratings in waveguides Incubated Bragg gratings in waveguides

1995-06-01

1996-11-12

Ullah, Akm E.

Optical waveguides

With optical coupler

Input/output coupler

G02B 634

Patent

active

055748104

ABSTRACT:
A Bragg reflection grating is written in photosensitive optical fiber using ultra-violet light from an ArF excimer laser with the aid of a phase grating to create a fringe pattern. The writing is effected by a type II damage process performed in two stages, the first of which involves the creation of a low reflectivity grating, which is incubated to greater reflectivity in the second stage. Incubation is performed without the use of any fringe pattern.

REFERENCES:
"High Reflectivity Fiber Gratings Produced By Incubated Damage Using a 193 nm Ar Flaser" By Dyer et al., Electronices Letters, vol. 30, No. 11, May 26, 1994, pp. 860-862.
"Photosensitivity in Ge-doped Silica Optical Waveguides and Fiberes with 193nm Light From an ArF Excimer laser", by Albert et al. Optics Letters, vol. 19, No. 6, Mar. 15, 1994, pp. 387-389.
"Bragg Grating Fabrication In Monomode Photosensitive Optical Fiber By UV Exposure Through a Phase Mask" by Hill et al. Application Phys. Letters, vol. 62, Nov. 10. Mar. 8, 1993, pp. 1035-1037.
Dyer, "High Reflectivity Fibre Gratings Produced By Incubated Damage Using a 193nm Ar Flaser", Electronics Letters, vol. 30, No. 11, May 26, 1994, pp. 860-862.
Albert, "Photosensitivity in Ge-doped Silica Optical Waveguides and Fibres With 193nm Light From an Ar F Excimer Laser", Optics Letters, vol. 19, No. 6, Mar. 15, 1994, pp. 387-389.
Hill, "Bragg Gratings Fabrication In Monomode Photosensitive Optical Fiber By UV Exposure Through a Phase Mask", Application Phys. Letters, vol. 62, Nov. 10, Mar. 8, 1993, pp. 1035-1037.

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