Strong LP01and LP11mutual coupling conversion in a two-mode fiber Bragg grating

Chuang Wu, Zhengyong Liu, Kit Man Chung, Ming Leung Vincent Tse, Florence Y.M. Chan, Pak Tao Lau, Chao Lu, Hwa Yaw Tam

Research output: Journal article publicationJournal articleAcademic researchpeer-review

41 Citations (Scopus)


A fiber Bragg grating is inscribed in a two-mode fiber using a 193-nm excimer laser and a phase mask. Strong LP01and LP11mutual coupling as large as -22.5 dB, which corresponds to a modal conversion efficiency of more than 99%, is experimentally achieved. The intermodal coupling mechanism is theoretically analyzed through a finite element method. This device can be used as a low-cost reflective LP01↔ LP11converter.
Original languageEnglish
Article number6217268
Pages (from-to)1080-1086
Number of pages7
JournalIEEE Photonics Journal
Issue number4
Publication statusPublished - 9 Jul 2012


  • Fiber Bragg grating
  • modal converter
  • two-mode fiber

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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