Compact microfluidic sensing by introducing effective phase shift in fiber Bragg grating

Minghui Tang; Guanghui Wang; Ho-Pui A. Ho; Xuping Zhang

doi:10.1117/12.2072027

24 October 2014 Compact microfluidic sensing by introducing effective phase shift in fiber Bragg grating

Minghui Tang, Guanghui Wang, Ho-Pui A. Ho, Xuping Zhang

Author Affiliations +

Proceedings Volume 9270, Optoelectronic Devices and Integration V; 92700N (2014) https://doi.org/10.1117/12.2072027
Event: SPIE/COS Photonics Asia, 2014, Beijing, China

Abstract

A compact microfluidic refractive index sensor fabricated by drilling hole in the middle section of a fiber Bragg grating (FBG) is reported herein. The laser-drilled hole provides a microfluidic channel for the aqueous sample to pass through while at the same time permits coupling of the interrogating light to detect the target analyte. The reported sensor takes advantage of the fact that a small phase shift in the central region of the grating will result in a very sharp peak in the FBG stop-band. The phase shift can be related to a range of possible perturbations inside the microfluidic channel, including passage of cells, beads and a shift in the concentration of certain fluidic component. The amount of wavelength shift of the peak in the FBG stop-band represents the change in the refractive index inside the microfluidic channel. Simulation results indicate very favorable sensor signal characteristics such as large wavelength shift and sharp reflection dips. The reported microfluidic phase shift FGB sensor could be a good candidate for portable flow cytometry applications.

Citation Download Citation

Minghui Tang, Minghui Tang, Guanghui Wang, Guanghui Wang, Ho-Pui A. Ho, Ho-Pui A. Ho, Xuping Zhang, Xuping Zhang, "Compact microfluidic sensing by introducing effective phase shift in fiber Bragg grating", Proc. SPIE 9270, Optoelectronic Devices and Integration V, 92700N (24 October 2014); doi: 10.1117/12.2072027; https://doi.org/10.1117/12.2072027

ACCESS THE FULL ARTICLE

PERSONAL SIGN IN
Full access may be available with your subscription

Email or Username Forgot your username?

Password Forgot your password?

Show

Remember Email/Username on this computer

Remember Password

No SPIE account? Create an account
or Institutional Sign In via Shibboleth

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $14.40

Non-members: $18.00 ADD TO CART

Show All Keywords

Keywords/Phrases

Search In:

Publication Years