Measurement and Analysis of Loss for Long-Period Photonic Crystal Fiber Gratings

Abstract:

In this work, we used a fiber splicer to fabricate a long-period grating (LPG) in a photonic crystal fiber (PCF) for power loss measurement. Photonic crystal fiber grating (PCFG) is long-period grating which is produced by using electric arc to heat the PCF. For the measurement of power loss, we will use beam profile and power meter to analyze in detail the phenomenon of loss factor and parameter of the measurement. We will also do experiment on both polished and unpolished long-period photonic crystal fiber grating and compare the results. Utilizing two long-period grating of photonic crystal fiber (polished and unpolished) to analyze and compare the difference of optical field distribution and power loss. The unpolished PCFG shows the equally filed distribution with wavelength by beam profile measurement. But, the polished PCFG is sensitive with wavelength that the field distribution of wavelengths 1520 and 1530nm are concentrated on the upper half of field distribution and the wavelength 1530nm is more concentrated on the side. The wavelength of polished long-period grating of photonic crystal fiber has sensitive response and loss with wavelength increase and increment. Another measurement is probing photonic crystal fiber grating of power loss measurement using power meter. The PCFG can be evaluated by field distribution and power for operating wavelength and power loss. The measurement of operating wavelength of the long-period fiber grating is 1550nm.

• Periodical: Applied Mechanics and Materials (Volumes 284-287)
• Pages: 2890-2893
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.284-287.2890
• Online since: January 2013
• Authors: Jung Sheng Chiang, Shih Yuan Lin, Chia Ming Chen, Nai Hsiang Sun, Wen Fung Liu
• Keywords: Long-Period Fiber Grating, Photonic Crystal Fiber (PCF)

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