Optimization of 3-hole-assisted PMMA optical fiber with double cladding for UV-induced FBG fabrication

Kei Chun Davis Cheng, Ming Leung Vincent Tse, Guiyao Zhou, Chi Fung Jeff Pun, Wing Kin Edward Chan, Chao Lu, Ping Kong Alexander Wai, Hwa Yaw Tam

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)


We propose a new hole-assisted polymer optical fiber design to eliminate the influence of dopant diffusion and to increase the UV writing efficiency in fiber Bragg grating inscription. The optical waveguide is formed inside a solid core surrounded by a ring of 3 large air holes in enhanced UV photosensitive PMMA with double-cladding. We determined a map of the single-mode and multi-mode phase transitions using a finite-element-based vectorial optical mode solver. We obtained a wide range of geometrical configuration for the single-transverse-mode (HE11) propagation in the visible. The design is optimized to operate at the minimum optical loss wavelengths of 580 nm and 770 nm.
Original languageEnglish
Pages (from-to)2080-2088
Number of pages9
JournalOptics Express
Issue number4
Publication statusPublished - 16 Feb 2009

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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