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Investigation on Periodically Surface-Corrugated Long-Period Gratings Inscribed on Photonic Crystal Fibers

Title
Investigation on Periodically Surface-Corrugated Long-Period Gratings Inscribed on Photonic Crystal Fibers
Author
한영근
Keywords
Long-period gratings; Photonic crystal fiber; Strain sensor; Temperature-insensitivity
Issue Date
2017-04
Publisher
SPRINGER
Citation
NANOSCALE RESEARCH LETTERS, v. 12, Article no. 245
Abstract
Transmission characteristics of periodically surface-corrugated long-period gratings (LPGs) inscribed on photonic crystal fibers (PCFs) using a wet-etching technique were experimentally investigated. A conventional wet method was implemented to periodically engrave the silica cladding region of the PCFs resulting in the periodic surface corrugation in the PCF. After applying the external strain to the PCF with the periodic surface micro-ridges, periodic modulation of refractive index based on the photoelastic effect is induced resulting in the formation of the PCF-based LPG. Increasing the applied strain successfully improves the extinction ratio of the resonant peak of the PCF-based LPG without the resonant wavelength shift. We also measured the transmission characteristics of the PCF-based LPG with variations in temperature and ambient index.
URI
https://nanoscalereslett.springeropen.com/articles/10.1186/s11671-017-1968-1https://repository.hanyang.ac.kr/handle/20.500.11754/113760
ISSN
1556-276X
DOI
10.1186/s11671-017-1968-1
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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