Polarization-maintaining few mode fiber composed of a central circular-hole and an elliptical-ring core

Jiajia Zhao, Ming Tang, Kyunghwan Oh, Zhenhua Feng, Can Zhao, Ruolin Liao, Songnian Fu, Perry Ping Shum, Deming Liu

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)


We propose a novel waveguide design of a polarization-maintaining few mode fiber (PM-FMF) supporting ≥10 non-degenerate modes, utilizing a central circular air hole and a circumjacent elliptical-ring core. The structure endows a new degree of freedom to adjust the birefringence of all the guided modes, including the fundamental polarization mode. Numerical simulations demonstrate that, by optimizing the air hole and elliptical-ring core, a PM-FMF supporting 10 distinctive polarization modes has been achieved, and the effective index difference Δneff between the adjacent guided modes could be kept larger than 1.32 × 10-4 over the whole C L band. The proposed fiber structure can be flexibly tailored to support an even larger number of modes in PM-FMF (14-mode PM-FMF has been demonstrated as an example), which can be readily applicable to a scalable mode division multiplexing system.

Original languageEnglish
Pages (from-to)261-266
Number of pages6
JournalPhotonics Research
Issue number3
Publication statusPublished - 2017 Jun 1

Bibliographical note

Funding Information:
National Natural Science Foundation of China (NSFC) (61331010, 61205063); 863 High Technology plan (2015AA016904); Program for New Century Excellent Talents in University (NCET) (NCET-13-0235).

Publisher Copyright:
© 2017 Chinese Laser Press.

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics


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