A new method for fiber chromatic dispersion measurement with microwave interference effect

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• 作者：Xiuyou Han ; ^{xyhan@dlut.edu.cn} ; Min Zhang ; Shanfeng Li ; Nuannuan Shi ; Yiying Gu ; Mingshan Zhao
• 关键词：Optical fiber ; Chromatic dispersion ; Microwave photonics ; Microwave interference effect
• 刊名：Optical Fiber Technology
• 出版年：2013
• 出版时间：August, 2013
• 年：2013
• 卷：19
• 期：4
• 页码：319-324
• 全文大小：1798 K

文摘

The chromatic dispersion (CD) is a key parameter for optical fibers. Based on the microwave interference effect, a new method for CD measurement of optical fibers is proposed. The radio frequency (RF) signals carried by two light-waves with different wavelengths transmit through the dispersive optical fiber under test. After photo-detector they interfere with each other due to the different phase shifts induced by the CD of fiber. The CD can be obtained by monitoring the changing interference RF power with scanning the wavelength of tunable laser source. The CD values of single mode fiber and dispersion compensating fiber are measured within the wavelength range from 1525 to 1605 nm. The common phase shift method is used to measure the CDs of the two types of fiber, which demonstrates the feasibility and veracity of the proposed method.