Method and apparatus for writing apodized patterns

Details Method and apparatus for writing apodized patterns Method and apparatus for writing apodized patterns

2006-05-09

2006-05-09

Frech, Karl D. (Department: 2876)

Optical waveguides

With optical coupler

Input/output coupler

Reexamination Certificate

active

07043121

ABSTRACT:
In some aspects, the invention relates to methods and systems for creating apodized periodic structures, such as apodized gratings in fibers. To create the periodic structures, a photosensitive medium is exposed to a spatially-varying radiation pattern. During the exposure, the position of the radiation pattern can oscillate with the respect to the photosensitive medium, thereby changing the average local refractive index of the medium. These methods and systems may be used to create regular structures in any appropriate medium, such as doped glasses and photosensitive polymers.

REFERENCES:
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patent: 6169830 (2001-01-01), Kewitsch et al.
Kashyap, “Fiber Bragg Gratings,” Academic Press (San Diego), 1999, pp. 195-226.
Strasser et al., Post Deadline Paper, Part A, Paper PD8, OFC '96, San Jose, CA, 1996.
Hill et al., “Bragg gratings fabricated . . . ,” Appl. Phys. Lett., 62(10):1035-1037, 1993.

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