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Proceedings Paper

Fabrication of a fiber optic tilted Bragg grating filter in 40-nm range with a single phase mask
Author(s): Joseph Grant; Y. Wang; Anup Sharma
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Paper Abstract

Fiber-optic Bragg grating filters are fabricated with a range of Bragg wavelength between 1296 and 1336 nm, using a single phase mask. 30 mW of continuous-wave light at 244 nm is used from a frequency-doubled argon-ion laser having an intracavity etalon. Gratings are fabricated by tilting the photosensitive fiber with respect to the phase mask up to an angle of 15 degrees. The variation of Bragg wavelength with the fiber-tilt is explained with a simple formula. High spatial coherence of 244 nm light makes it possible to displace the fiber as much as 6 mm in front of the phase mask and tilt the fiber by as much as 15 degrees. This results in nearly constant band-width and near 100 % reflectivity for all gratings throughout the 40 nm range.

Paper Details

Date Published: 17 February 2003
PDF: 7 pages
Proc. SPIE 4833, Applications of Photonic Technology 5, (17 February 2003); doi: 10.1117/12.473812
Show Author Affiliations
Joseph Grant, NASA Marshall Space Flight Ctr. (United States)
Y. Wang, Alabama A&M Univ. (United States)
Anup Sharma, Alabama A&M Univ. (United States)


Published in SPIE Proceedings Vol. 4833:
Applications of Photonic Technology 5

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