Abstract

We investigated an all-fiber mode converter based on long-period fiber gratings (LPFGs) written in the few-mode fiber. Mode conversion between the fundamental core mode and different higher-order core modes (LP11, LP21, and LP02 modes) can be realized via a single LPFG with an efficiency of 99% at the resonance wavelength. Moreover, optimized mode conversion between the LP01 and LP21 modes can be realized by cascading two LPFGs with different grating pitches. The maximum conversion efficiency is estimated to be 99.5% at 1553 nm. The orbital angular momentum states with different topological charges (±1,±2) are demonstrated experimentally. The all-fiber LPFG mode converters could have promising applications in the mode-division multiplexing optical communications.

© 2017 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Mode converter based on the long-period fiber gratings written in the two-mode fiber

Yunhe Zhao, Yunqi Liu, Liang Zhang, Chenyi Zhang, Jianxiang Wen, and Tingyun Wang
Opt. Express 24(6) 6186-6195 (2016)

Mode converters based on cascaded long-period waveguide gratings

Wei Jin and Kin Seng Chiang
Opt. Lett. 41(13) 3130-3133 (2016)

Bandwidth control of long-period grating-based mode converters in few-mode fibers

Siddharth Ramachandran, Zhiyong Wang, and Man Yan
Opt. Lett. 27(9) 698-700 (2002)

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 (8)

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

Tables (1)

You do not have subscription access to this journal. Article tables 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