Materials, Photonic Devices, and Sensors

Cladding modes in photonic crystal fiber: characteristics and sensitivity to surrounding refractive index

[+] Author Affiliations
Xiuli Jiang

University of Shanghai for Science and Technology, College of Science, 516 Jun Gong Road, Shanghai 200093, China

Shanghai Institute of Electric Power, Department of Math and Physics, 2103 Ping Liang Road, Shanghai 200090, China

Zhengtian Gu

University of Shanghai for Science and Technology, College of Science, 516 Jun Gong Road, Shanghai 200093, China

Li Zheng

Shanghai Institute of Electric Power, Department of Math and Physics, 2103 Ping Liang Road, Shanghai 200090, China

Opt. Eng. 55(1), 017106 (Jan 25, 2016). doi:10.1117/1.OE.55.1.017106
History: Received October 2, 2015; Accepted December 22, 2015
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Abstract.  Characteristics of cladding modes in a photonic crystal fiber (PCF) with triangular air-hole lattice in the cladding are numerically analyzed using a finite element method. The transition for LP11 cladding mode to core mode with variation of the normalized wavelength has been shown. The transition of the LP01 cladding mode to the outer silica mode and reorganization of the LP0m cladding modes caused by varying the fiber radius has been investigated. By choosing the optimized fiber radius, which is located in the cladding modes’ reorganization region, the sensitivity of the coupled wavelength between the core mode LP01 and cladding mode LP03 to surrounding refractive index is increased by a factor of five and reaches to 2660  nm/refractive index unit over the range of 1.40 to 1.42. The sensitivity is competitive with that of long-period grating in PCF in response to changes in refractive indices of the medium contained in the cladding air channels.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Xiuli Jiang ; Zhengtian Gu and Li Zheng
"Cladding modes in photonic crystal fiber: characteristics and sensitivity to surrounding refractive index", Opt. Eng. 55(1), 017106 (Jan 25, 2016). ; http://dx.doi.org/10.1117/1.OE.55.1.017106


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