Silica Waveguide Four-Mode Multiplexer Based on Cascaded Directional Couplers

Manzhuo Wang; Xiaoqiang Sun; Tingyu Liu; Jianbo Yue; Chaoyang Sun; Dehui Li; Yuanda Wu; Daming Zhang

doi:10.3390/photonics10090983

Photonics (Aug 2023)

Silica Waveguide Four-Mode Multiplexer Based on Cascaded Directional Couplers

Manzhuo Wang,
Xiaoqiang Sun,
Tingyu Liu,
Jianbo Yue,
Chaoyang Sun,
Dehui Li,
Yuanda Wu,
Daming Zhang

Affiliations

Manzhuo Wang: State Key Laboratory of Integrated Optoelectronics, College of Electronic Science & Engineering, Jilin University, No. 2699 Qianjin Street, Changchun 130012, China
Xiaoqiang Sun: State Key Laboratory of Integrated Optoelectronics, College of Electronic Science & Engineering, Jilin University, No. 2699 Qianjin Street, Changchun 130012, China
Tingyu Liu: State Key Laboratory of Integrated Optoelectronics, College of Electronic Science & Engineering, Jilin University, No. 2699 Qianjin Street, Changchun 130012, China
Jianbo Yue: State Key Laboratory of Integrated Optoelectronics, College of Electronic Science & Engineering, Jilin University, No. 2699 Qianjin Street, Changchun 130012, China
Chaoyang Sun: State Key Laboratory of Integrated Optoelectronics, College of Electronic Science & Engineering, Jilin University, No. 2699 Qianjin Street, Changchun 130012, China
Dehui Li: State Key Laboratory of Integrated Optoelectronics, College of Electronic Science & Engineering, Jilin University, No. 2699 Qianjin Street, Changchun 130012, China
Yuanda Wu: State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, 35A Tsinghua East Road, Beijing 100083, China
Daming Zhang: State Key Laboratory of Integrated Optoelectronics, College of Electronic Science & Engineering, Jilin University, No. 2699 Qianjin Street, Changchun 130012, China

DOI: https://doi.org/10.3390/photonics10090983
Journal volume & issue: Vol. 10, no. 9
p. 983

Abstract

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Mode multiplexers/demultiplexers (MUX/deMUX) are key components in mode division multiplexing. A silica waveguide mode MUX consisting of four cascaded directional couplers is experimentally demonstrated. The beam propagation method is used in the device design and optimization. Thermal oxidation, plasma-enhanced chemical vapor deposition, and ultraviolet photolithography are adopted in the silica waveguide mode MUX fabrication. The measurement results prove that the input E00 mode can be selectively converted to E10 mode, E20 mode, and E30 mode. Within the wavelength range of 1500 to 1620 nm, the insertion loss is less than 12.2 dB. The proposed mode MUX has good potential in on-chip MDM applications.

Published in Photonics

ISSN: 2304-6732 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics
Website: http://www.mdpi.com/journal/photonics

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