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1 x N All-Logic Optical Switch Based on Polymer Platform Using Multimode Interferometer
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DOI：10.1002/adpr.202400118.png)
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The compact and broadband optical switch with a large port count is demanded with the increasing communication capacity. In this article, a universal method for modeling the 1 x N switch using multimode interferometer (MMI) through transmission matrixes is proposed. Herein, the reasons for the narrowing of the operating bandwidth switch are analyzed. As a proof of concept, a wide bandwidth 1 x 4 switch, which has an insertion loss lower than 23.7 dB, and a cross talk better than -10 dB at 1550 nm are simulated, designed, and fabricated. The cross talk throughout the C band is lower than -8.5 dB. According to the experimental result, the 1 x 4 switch with four-equal-length modulating arms shows a 32 nm bandwidth for -10 dB cross talk which is 13 times larger than traditional switch. The switch realizes a multi-port logic optical switch by modulation. The 1 x N switch based on the generalized Mach-Zehnder interferometer (GMZI) structure reduce the footprint significantly compared with the 1 x N switch consisting of a 1 x 2 switch cascade. It is believed that 1 x N switch based on GMZI structures is a promising solution to increase integration density.
Keyword:
integrated devices
Mach-Zehnder interferometers
optical switches
期刊
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18.8
论文数:
981
被引数:
3.6K
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