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High‐ Q Polymer Microcavities Integrated on a Multicore Fiber Facet for Vapor Sensing
Author(s) -
Zhang Siyao,
Tang ShuiJing,
Feng Shengfei,
Xiao YunFeng,
Cui Wanyin,
Wang Xinke,
Sun Wenfeng,
Ye Jiasheng,
Han Peng,
Zhang Xinping,
Zhang Yan
Publication year - 2019
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201900602
Subject(s) - materials science , whispering gallery wave , microsystem , optical fiber , facet (psychology) , optoelectronics , lithography , fiber , nanotechnology , optics , resonator , composite material , psychology , social psychology , physics , personality , big five personality traits
Abstract The further development of “lab on fiber” technology demands more powerful optical microsystems and optical fibers with special functions to create sensors with better performance. Whispering gallery microcavities (WGMs) made of different materials with high quality factors show very good sensitivity to gases, nanoparticles, and biocomponents. However, realizing the excitation and detection of the resonant modes of WGMs on the facets of optical fibers is still a great challenge. This work employs the advanced 3D manufacturing technology of two‐photon lithography to fabricate an optical microsystem on the end facet of a multicore optical fiber, which enables excitation and detection of whispering gallery modes on the end facet of an optical fiber. Whispering gallery modes with high quality factors are observed, and the sensing characterization of this device for vapors of three types of volatile organic compounds is investigated. Such optical fiber vapor sensors can be applied in the fields of medical care, environmental monitoring and chemical manufacturing. Additionally, the out‐of‐plane light coupling strategy may be useful for the design of integrated optical circuits on chips.