Recent advances on all-fiber tunable filter

S. Yin; K. M. Reichard; J. E. Lee; C. A. Hahn; D. H. Ditto; J. Mazurowski; Q. Wang; S. Nam; Q. Zhang; Q. Chen; J. Claude

doi:10.1117/12.613064

8 September 2005 Recent advances on all-fiber tunable filter

S. Yin, K. M. Reichard, J. E. Lee, C. A. Hahn, D. H. Ditto, J. Mazurowski, Q. Wang, S. Nam, Q. Zhang, Q. Chen, J. Claude

Author Affiliations +

Proceedings Volume 5911, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications XI; 59110V (2005) https://doi.org/10.1117/12.613064
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

A unique all-fiber tunable filter is based on the combination of a single resonant band long period grating (LPG) and an electro-optic polymer second cladding layer. The single resonant band LPG is fabricated by etching the cladding of a standard 125 μm thick fiber and using either ultraviolet (UV) illumination or electric arc discharge to write the grating. Once a single resonant band has been achieved, a polymer second cladding layer is applied to the LPG. The refractive index of the polymer cladding determines the resonant wavelength of the filter and is tuned by applying an external electric field. The grating fabrication method and type of polymer used for the second cladding affect filter performance, and both must be considered when designing an application specific all-fiber filter.

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S. Yin, K. M. Reichard, J. E. Lee, C. A. Hahn, D. H. Ditto, J. Mazurowski, Q. Wang, S. Nam, Q. Zhang, Q. Chen, and J. Claude "Recent advances on all-fiber tunable filter", Proc. SPIE 5911, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications XI, 59110V (8 September 2005); https://doi.org/10.1117/12.613064

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KEYWORDS

Cladding

Polymers

Refractive index

Tunable filters

Ultraviolet radiation

Optical filters

Photorefractive polymers

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