Manifestation of an ultra-high sensitive fiber optic microbend sensor realized by shining a Bessel-Gauss beam

Arijit Datta; Susmita Karmakar; Ardhendu Saha

doi:10.1117/12.2579727

8 November 2020 Manifestation of an ultra-high sensitive fiber optic microbend sensor realized by shining a Bessel-Gauss beam

Arijit Datta, Susmita Karmakar, Ardhendu Saha

Author Affiliations +

Proceedings Volume 11525, SPIE Future Sensing Technologies; 115250F (2020) https://doi.org/10.1117/12.2579727
Event: SPIE Future Sensing Technologies, 2020, Online Only

Abstract

Bend-induced loss in microbending fiber-optic sensor has proved to be an effective one for the direct and indirect measurement of various physical parameters. In this research, a novel and highly sensitive microbend sensor has been explored by launching a zero order Bessel-Gauss beam inside a waveguide arrangement having a No-core fiber bonded amidst two special higher-order mode supporting fibers. By harnessing the special characteristics of the Bessel-Gauss beam, pairing of manifold high-order modes has been affirmed inside the sensor structure. The captivating feature of such sensor is that it defies the conventional wisdom and significantly improves the sensitivity without any intricate fabrication techniques like in tapering, bending etc. To our knowledge, such realization of Bessel-Gauss beam-shined microbend sensor has not been reported earlier in any of the contemporary literature. In support of our theoretical analysis; a Beam propagation method is employed in OptiBPM software (Optiwave Systems Inc.) to envisage the full transmission spectrum of the waveguide. For different bend radii, the sensor response has been numerically investigated and it is anticipated that the sensitivity is expected to be enhanced by a gentle reduction in the bend radius. With the presence of six microbends, the proposed sensor manifests an average bend sensitivity of 2.8 dB/mm which is 3.2 times superior to the classical microbend sensing configuration. Due to such superior sensing performance, the present paradigm paves the way for many potential applications, like damage detection of various engineering structures, and measurement of different physical parameters like temperature and pressure.

Conference Presentation

Citation Download Citation

Arijit Datta, Susmita Karmakar, and Ardhendu Saha "Manifestation of an ultra-high sensitive fiber optic microbend sensor realized by shining a Bessel-Gauss beam", Proc. SPIE 11525, SPIE Future Sensing Technologies, 115250F (8 November 2020); https://doi.org/10.1117/12.2579727

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