Abstract
Optical pulse processor meets the urgent demand for high-speed, ultra wideband devices, which can avoid electrical confinements in various fields, e.g., alloptical communication, optical computing technology, coherent control and microwave fields. To date, great efforts have been made particularly in on-chip programmable pulse processing. Here, we experimentally demonstrate a programmable pulse processor employing 16-cascaded Mach-Zehnder interferometer coupled microring resonator (MZI-MRR) structure based on silicon-oninsulator wafer. With micro-heaters loaded to the device, both amplitude and frequency tunings can be realized in each MZI-MRR unit. Thanks to its reconfigurability and integration ability, the pulse processor has exhibited versatile functions. First, it can serve as a fractional differentiator whose tuning range is 0.51–2.23 with deviation no more than 7%. Second, the device can be tuned into a programmable optical filter whose bandwidth varies from 0.15 to 0.97 nm. The optical filter is also shape tunable. Especially, 15-channel wavelength selective switches are generated.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (Grant Nos. 61475052 and 61622502).
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Yuhe Zhao is a doctoral student majored in optical engineering in Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST), Wuhan, China, where she joined the Optoelectronic Devices and Integration Laboratory. She received her bachelor’s degree from HUST in 2016. Her research interests are optoelectronic devices and integration, microwave photonics and arbitrary waveform generation.
Xu Wang receiced her bachelor’s degree in 2014 and is currently a doctoral student majored in optical engineering in Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST),Wuhan, China. Her current work lies in optoelectronic devices and integration and microwave frequency measurement.
Dingshan Gao is an associate professor in Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST), Wuhan, China. He received the B.S. degree from Wuhan University of Technology (WHUT), China in 2000, and Ph.D. degree in Institute of Semiconductors (IOS), Chinese Academy of Sciences (CAS). He is working on quantum optics, nonlinear optics, nano optics and optoelectronic devices and integration technology.
Jianji Dong is a professor in Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST), Wuhan, China. He received his Ph.D. degree in optoelectronics engineering from HUST in 2008. From Feb. 2006 to Aug. 2006, he worked in Network Technology Research Centre (NTRC), Nanyang Technological University, Singapore, as an exchange student. From Nov. 2008 to Feb. 2010, he worked in Centre of Advanced Photonics and Electronics, Cambridge University as a research associate. He is working on the silicon photonics, photonic computing, and microwave photonics.
Xinliang Zhang received the B.S. and Ph.D. degrees from Huazhong University of Science and Technology (HUST), China, in 1992 and 2001. He became a full professor of School of Optical and Electronic Information, HUST in 2004, and now he is also a full professor of Wuhan National Laboratory for Optoelectronics (WNLO). Currently, he is the dean of School of Optical and Electronic Information, HUST, and also the director of Division of Optoelectronic Devices and Integration (OEDI) in WNLO. His research areas cover semiconductor optoelectronic devices for optical interconnection and optical signal processing.
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Zhao, Y., Wang, X., Gao, D. et al. On-chip programmable pulse processor employing cascaded MZI-MRR structure. Front. Optoelectron. 12, 148–156 (2019). https://doi.org/10.1007/s12200-018-0846-5
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DOI: https://doi.org/10.1007/s12200-018-0846-5