Using optical fiber sidewall to capture light from an adjustable depth

Jianjun Ma; Yasser Chiniforooshan; Wojtek J. Bock

doi:10.1117/12.974862

7 November 2012 Using optical fiber sidewall to capture light from an adjustable depth

Jianjun Ma, Yasser Chiniforooshan, Wojtek J. Bock

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 842169 (2012) https://doi.org/10.1117/12.974862
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

It is commonly accepted that light captured by the fiber core sidewall is from a depth of less than 1 μm limited by the evanescent-wave (EW) field. Yet we demonstrate in this paper that, with some simple modifications, the fiber core sidewall is also able to capture light from an adjustable depth beyond the EW field. The key elements are an air-clad fiber core cylinder; a liquid sample droplet surrounding a short segment of the core; a narrow, collimated and position-tunable excitation beam perpendicular to the fiber axis to excite the sample. A theoretical investigation of the operation of the mechanism is given, which is verified by a preliminary experiment.

Citation Download Citation

Jianjun Ma, Yasser Chiniforooshan, and Wojtek J. Bock "Using optical fiber sidewall to capture light from an adjustable depth", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842169 (7 November 2012); https://doi.org/10.1117/12.974862

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

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