Ma, Yuehui, Jiang, Chen, Chen, Siyu, Mou, Chengbo, Zhou, Kaiming and Liu, Yunqi (2024). Multi-order orbital angular momentum mode generators based on integrated long-period fiber gratings. Optics Letters, 49 (11), pp. 3243-3246.
Abstract
We propose integrated long-period fiber gratings (LPFGs) fabricated by a CO2 laser to realize a multi-channel and multi-order orbital angular momentum (OAM) mode generator. The integrated LPFG is inscribed on multiple surfaces of the few-mode fiber (FMF) by rotating the fiber in the opposite direction at an angle θ. By controlling the rotation angle, the number of integrated LPFGs can be set. The selected rotation angle is 43∘, which can integrate up to nine LPFGs, i.e., realizing that the number of channels for first-order orbital angular momentum (OAM) mode conversion is nine. The integrated LPFGs fabricated in this method allow a flexible design of channel spacing. In addition, the flexible selection of the integrated grating period achieves the simultaneous generation of multi-channel second-order and third-order OAM mode conversion. The multi-channel and multi-order OAM mode generators have important application in optical communication multiplexing systems and OAM sensing.
Publication DOI: | https://doi.org/10.1364/ol.520507 |
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Divisions: | College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT) |
Funding Information: | National Key Research and Development Program of China (2020YFB1805800); National Natural Science Foundation of China (62075124, 62305170); China Scholarship Council (202306890090). |
Additional Information: | © 2024 Optica Publishing Group. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited. |
Publication ISSN: | 1539-4794 |
Data Access Statement: | Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request. |
Last Modified: | 16 Aug 2024 07:17 |
Date Deposited: | 26 Jun 2024 13:06 |
Full Text Link: | |
Related URLs: |
http://www.scop ... tnerID=8YFLogxK
(Scopus URL) https://opg.opt ... -3243&id=551375 (Publisher URL) |
PURE Output Type: | Article |
Published Date: | 2024-06-01 |
Published Online Date: | 2024-05-31 |
Accepted Date: | 2024-05-07 |
Authors: |
Ma, Yuehui
Jiang, Chen Chen, Siyu Mou, Chengbo ( ![]() Zhou, Kaiming ( ![]() Liu, Yunqi |