Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 22, Issue 20, Pages 1539-1541Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2010.2068043
Keywords
Highly birefringent photonic crystal fiber (HB-PCF); Sagnac interferometer (SI); torsion sensor with enhanced sensitivity
Funding
- Gwangju Institute of Science and Technology
- Ministry of Education and Human Resources Development, Republic of Korea
- Ministry of Education, Science & Technology (MoST), Republic of Korea [gist-10] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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We report on enhanced torsion sensitivity by using a highly birefringent photonic crystal fiber (HB-PCF)-based Sagnac interferometer. In order to increase the torsion sensitivity, we introduced an anisotropic microstructure into the cross section of an HB-PCF by enlarging the size of air holes of one row. This can result in a high birefringence of the order of 10(-3) and low sensitivities to bending and temperature. The torsion sensitivity was measured to be high with similar to 0.06 nm/degrees.
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