Title

Fabry-Perot Interferometer Embedded in a Glass Chip Fabricated by Femtosecond Laser

Abstract

We report a simple Fabry-Perot interferometer (FPI) embedded in a glass chip, which is capable of precisely measuring the refractive indices of liquid samples. The microdevice is the integration of a single-mode optical fiber and a microchannel in the photosensitive glass fabricated by femtosecond laser followed by thermal treatment, wet etching, and annealing. The function of the FPI is demonstrated by measuring the refractive indices of water and methanol. The interference visibility is more than 4.0 dB, which is sufficient for most sensing applications. This refractive index sensor with rigid structure could be further integrated to become a more complex 3D lab-on-a-chip for reliable biomedical applications.

Department(s)

Mechanical and Aerospace Engineering

Second Department

Electrical and Computer Engineering

Keywords and Phrases

Fiber Optic Sensors; Heat Treatment; Light Measurement; Light Refraction; Optical Fiber Fabrication; Organic Polymers; Pulsed Laser Applications; Ultrashort Pulses

Library of Congress Subject Headings

Fabry-Perot interferometers
Glass, Photosensitive
Interferometry
Methanol
Refractive index
Refractometers

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2009 Optical Society of America, All rights reserved.


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