A review of the recent advances on an all-fiber electronically tunable wavelength filter

S. Yin; K. M. Reichard; J. E. Lee; Q. Chen; D. H. Ditto; J. Mazurowski; M. Hackert; Q. Zhang

doi:10.1117/12.679874

24 August 2006 A review of the recent advances on an all-fiber electronically tunable wavelength filter

S. Yin, K. M. Reichard, J. E. Lee, Q. Chen, D. H. Ditto, J. Mazurowski, M. Hackert, Q. Zhang

Proceedings Volume 6314, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications XII; 63140Q (2006) https://doi.org/10.1117/12.679874
Event: SPIE Optics + Photonics, 2006, 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 125 μm thick fiber and using ultraviolet (UV) illumination to write the grating. Once a single resonant band has been achieved, an ITO electrode is sputtered onto the thin silica cladding and then a polymer second cladding layer is applied. The refractive index of the polymer determines the resonant wavelength of the filter. After a second electrode is coated onto the second cladding, the polymer index is tuned by applying an external electric field. Recent modeling and experimentation has shown that a high index ITO inner electrode can increase the tuning range of the filter up to 10 times by inducing cladding mode transitions.

Citation Download Citation

S. Yin, K. M. Reichard, J. E. Lee, Q. Chen, D. H. Ditto, J. Mazurowski, M. Hackert, and Q. Zhang "A review of the recent advances on an all-fiber electronically tunable wavelength filter", Proc. SPIE 6314, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications XII, 63140Q (24 August 2006); https://doi.org/10.1117/12.679874

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