Abstract

Asymmetric transverse-load characteristics and the polarization dependence of long-period fiber gratings (LPFGs) written by high-frequency CO2 laser pulses are investigated in detail. It is demonstrated that the resonant wavelength is dependent on the direction of the applied force and on the polarization state of the input light; however, the coupling strength is independent of these parameters. When a transverse load is applied along different orientations of the LPFG, the resonant wavelength may be shifted toward the longer wavelength, the shorter wavelength, or hardly shifted, whereas the absolute value of peak transmission attenuation is linearly decreased with an increase of the applied transverse load, with almost no sensitivity to the load direction. These unique transverse-load characteristics and the polarization dependence are due to the load-induced birefringence that leads to the rotation of optical principal axes in the LPFG.

© 2007 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Bend sensors with direction recognition based on long-period gratings written in D-shaped fiber

Donghui Zhao, Xianfeng Chen, Kaiming Zhou, Lin Zhang, Ian Bennion, William N. MacPherson, James S. Barton, and Julian D. C. Jones
Appl. Opt. 43(29) 5425-5428 (2004)

Long-period grating fabricated by periodically tapering standard single-mode fiber

Li-Yang Shao, Jian Zhao, Xinyong Dong, H. Y. Tam, C. Lu, and Sailing He
Appl. Opt. 47(10) 1549-1552 (2008)

Bending characteristics of a long-period fiber grating in a hollow eccentric optical fiber

Xing Zhong, Chunying Guan, Guopei Mao, Jianan Fu, Yang Liu, Jinhui Shi, and Libo Yuan
Appl. Opt. 54(26) 7879-7883 (2015)

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 OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA 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 OSA member, or as an authorized user of your institution.

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

Figures (7)

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

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

Equations (11)

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

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

Metrics

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

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