Optical fiber cavity ring down measurement of refractive index with a microchannel drilled by femtosecond laser

Zhou, Kaiming, Webb, David, Mou, Chengbo, Farries, Mark, Hayes, Neil and Bennion, Ian (2009). Optical fiber cavity ring down measurement of refractive index with a microchannel drilled by femtosecond laser. IEEE photonics technology letters, 21 (22), pp. 1653-1655.

Abstract

A microchannel was inscribed in the fiber of a ring cavity which was constructed using two 0.1%:99.9% couplers and a 10-m fiber loop. Cavity ring down spectroscopy was used to measure the refractive index (RI) of gels infused into the microchannel. The ring down time discloses a nonlinear increase with respect to RI of the gel and sensitivity up to 300 µs/RI unit and an index resolution of 1.4 × 10 was obtained. © 2009 IEEE.

Divisions: Engineering & Applied Sciences > Electrical, Electronic & Power Engineering
Additional Information: ©2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Uncontrolled Keywords: measurement by laser beam, micro-optomechanical devices, microfabrication, optical fibre couplers, optical fibre fabrication, refractive index measurement, spectroscopy, cavity ring down spectroscopy, femtosecond laser, fiber loop, gels, laser spectroscopy, microchannel, optical fiber cavity ring down measurement, cavity ring down, micromachining, optical fiber
Published Date: 2009-01-01
Authors: Zhou, Kaiming
Webb, David
Mou, Chengbo
Farries, Mark
Hayes, Neil
Bennion, Ian

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