Ultra-compact mode (de) multiplexer based on subwavelength asymmetric Y-junction

Ultra-compact mode (de) multiplexer based on subwavelength asymmetric Y-junction

We propose and experimentally demonstrate a novel multimode ultra-compact mode (de)multiplexer for highly integrated on-chip mode-division multiplexing systems. This device is composed of a wide divergence angle asymmetric Y-junction based on subwavelength structure and optimized using an inverse de...

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Bibliographic Details
Published in:Optics express Vol. 26; no. 7; pp. 8162 - 8170
Main Authors: Chang, Weijie, Lu, Luluzi, Ren, Xinshu, Li, Dongyu, Pan, Zepeng, Cheng, Mengfan, Liu, Deming, Zhang, Minming
Format: Journal Article
Language:English
Published: United States 02-04-2018
Online Access:Get full text
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Summary:We propose and experimentally demonstrate a novel multimode ultra-compact mode (de)multiplexer for highly integrated on-chip mode-division multiplexing systems. This device is composed of a wide divergence angle asymmetric Y-junction based on subwavelength structure and optimized using an inverse design method. The proposed device occupied a footprint of only 2.4 × 3 µm . The measured insertion loss and crosstalk were less than 1dB and -24 dB from 1530 nm to 1590 nm for both TE mode and TE mode, respectively. Likewise, a three mode multiplexer is also designed and fabricated with a compact footprint of 3.6 × 4.8 µm . Furthermore, our scheme could also be expanded to include more modes.
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ISSN:1094-4087
DOI:10.1364/OE.26.008162