Novel optical add-drop multiplexer based on dual racetrack resonators |
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| Authors: | Xiaoguang Zhang Yue Wang Junming An Jiashun Zhang Hongjie Wang Jianguang Li Liangliang Wang Xiongwei Hu Yuanda Wu |
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| Institution: | 1. College of Chemistry, Nanchang University, Nanchang 330031, PR China;2. State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, PR China;3. School of Chemistry, Biology and Material Science, East China University of Technology (ECUT), Nanchang 330013, PR China;4. Jiangxi Entry-Exit Inspection and Quarantine Bureau, Nanchang 330038, PR China;5. Jiangxi Key Laboratory of Mass Spectrometry and Instrumentation, ECUT, Nanchang 330013, PR China |
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| Abstract: | In this paper, we designed and fabricated a four-channel optical add-drop multiplexer (OADM) based on dual racetrack resonators. The size of the fabricated device is only 2400 μm × 500 μm. The fabricated device can effectively and perfectly realize the signals upload and download. The free spectral range (FSR) of OADM is about 15.2 nm. We take the spectral responses near 1555 nm as an example. When the device acts as an optical drop multiplexer, the minimum insertion loss is 4.481 dB and the maximum extinction ratio is 31.931 dB. The maximum adjacent channels crosstalk is -9.845 dB. When the device acts as an optical add multiplexer, the minimum insertion loss is 0.944 dB and all of the extinction ratios are bigger than 25 dB. The maximum crosstalk is -16.531 dB which indicates the crosstalk can be neglected. |
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