Photonics Research, 2015, 3 (4): 04000115, Published Online: Jan. 6, 2016   

Simultaneous evaluation of two branches of a multifunctional integrated optic chip with an ultra-simple dual-channel configuration Download: 810次

Author Affiliations
1 Key Laboratory of In-fiber Integrated Optics of Ministry Education of China, Harbin Engineering University,Harbin 150001, China
2 National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology,Wuhan 430074, China
Abstract
We propose an ultra-simple dual-channel configuration for simultaneously evaluating two branches of a multifunctional integrated optic chip (MFIOC). In the configuration, the MFIOC is employed as a beam splitter to construct the demodulation interferometer together with a 2 × 2 fiber coupler. Interference happens between polarization modes traveling through different channels of the MFIOC. The cross-couplings of each channel are respectively characterized by the interference peaks which distribute on opposite sides of the central interference peak. Temperature responses of the MFIOC are experimentally measured from ?40°C to 80°C. Results show that the proposed configuration can achieve simultaneous dual-channel transient measurements with resolution of ?90 dB and dynamic range of 90 dB. In addition, the two channels of the configuration have consistent measuring performance, and the two branches of the MFIOC have different responses to temperature variation.

Yonggui Yuan, Chuang Li, Jun Yang, Ai Zhou, Shuai Liang, Zhangjun Yu, Bing Wu, Feng Peng, Yu Zhang, Zhihai Liu, Libo Yuan. Simultaneous evaluation of two branches of a multifunctional integrated optic chip with an ultra-simple dual-channel configuration[J]. Photonics Research, 2015, 3(4): 04000115.

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