Programmable long-period grating in a liquid core optical fiber

Tao Qi, Yongmin Jung, Limin Xiao, Jie Wang, Shilin Xiao, Chao Lu, Hwa Yaw Tam, Anna C. Peacock

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)


� 2016 Optical Society of America. A programmable fiber long-period grating (LPG) is experimentally demonstrated in a liquid core optical fiber with a low insertion loss. The LPG is dynamically formed by a temperature gradient in real time through a micro-heater array. The transmission spectrum of the LPG can be completely reconfigured by digitally changing the grating period, index contrast, length, and design. The phase shift inside the LPG can also be readily defined to enable advanced spectrum shaping. Owing to the high thermo-optic coefficient of the liquid core, it is possible to achieve high coupling efficiencies with driving powers as low as a few tens of milliwatts. The proposed thermo-programmable device provides a potential design solution for dynamic all-fiber optics components.
Original languageEnglish
Pages (from-to)4763-4766
Number of pages4
JournalOptics Letters
Issue number20
Publication statusPublished - 15 Oct 2016

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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