Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Specklegram in a multiple-mode fiber and its dependence on longitudinal modes of the laser source

Not Accessible

Your library or personal account may give you access

Abstract

A specklegram in a multimode fiber (MMF) has successfully been used as a sensor for detecting external disturbance. Our experiments showed that the sensitivity in the sensor with a multiple longitudinal-mode laser as its source was much higher than that with a single longitudinal-mode laser. In addition, the near-field pattern observations indicated that the coupling between different transverse modes in the MMF is quite weak. Based on the experimental results, a theoretical model for the speckle formation is proposed, taking a bend-caused phase factor into consideration. It is shown in the theoretical analysis that the interferences between different longitudinal modes make a larger contribution to the specklegram signals.

© 2007 Optical Society of America

Full Article  |  PDF Article
More Like This
Specklegram in a grapefruit fiber and its response to external mechanical disturbance in a single-multiple-single mode fiber structure

Yuntao Wang, Haiwen Cai, Ronghui Qu, Zujie Fang, Emmanuel Marin, and Jean-Pierre Meunier
Appl. Opt. 47(20) 3543-3548 (2008)

Optical fiber specklegram sensor analysis by speckle pattern division

Eric Fujiwara, Murilo Ferreira Marques dos Santos, and Carlos Kenichi Suzuki
Appl. Opt. 56(6) 1585-1590 (2017)

Analysis of a fiber specklegram sensor by using coupled-mode theory

Francis T. S. Yu, Jianzhong Zhang, Shizhuo Yin, and Paul B. Ruffin
Appl. Opt. 34(16) 3018-3023 (1995)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (9)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (16)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Metrics

Select as filters


Select Topics Cancel
© Copyright 2022 | Optica Publishing Group. All Rights Reserved