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Title: Crossing-free on-chip 2  ×  2 polarization-transparent switch with signals regrouping function
Authors: Sun, Chunlei
Lai, Yaxiao
Yu, Yu
Fu, Songnian
Shum, Perry Ping
Zhang, Xinliang
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2018
Source: Sun, C., Lai, Y., Yu, Y., Fu, S., Shum, P. P., & Zhang, X. (2018). Crossing-free on-chip 2  ×  2 polarization-transparent switch with signals regrouping function. Optics Letters, 43(16), 4009-4012. doi:10.1364/ol.43.004009
Journal: Optics Letters
Abstract: We propose and demonstrate an on-chip 2×2 polarization-transparent switch for simultaneously handling two-group polarization-division multiplexing (PDM) signals. By introducing the polarization-transparent power splitter/combiner (PPS/PPC), waveguide crossings such as those in conventional PDM switches can be avoided and, thus, the insertion losses and complexity of the device can be reduced. Furthermore, each input polarization tributary can be independently switched and routed thanks to the output selectivity of the PPS/PPC. Thus, not only a basic switch between the dual-group PDM signals, but also a precise four-channel-signal regrouping can be achieved, enabling a complete and non-redundant switching functionality. A polarization extinction ratio larger than 15 dB with reasonable insertion losses is experimentally observed. Clear and open eye diagrams can be obtained with less than 1 dB power penalties for all the measured paths.
ISSN: ‎0146-9592
DOI: 10.1364/OL.43.004009
Rights: © 2018 Optical Society of America. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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