Authors:	M. Wang, A. Ribeiro, Y. Xing, W. Bogaerts
Title:	Tolerant, Broadband Tunable 2x2 Coupler Circuit
Format:	International Journal
Publication date:	2/2020
Journal/Conference/Book:	Optics Express
Editor/Publisher:	OSA,
Volume(Issue):	28(4) p.5555-5566
DOI:	10.1364/OE.384018
Citations:	29 (Dimensions.ai - last update: 24/11/2024) 19 (OpenCitations - last update: 27/6/2024) Look up on Google Scholar
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Abstract

We propose a circuit design for a broadband tunable 2x2 waveguide coupler, consisting of a two-stage Mach-Zehnder interferometer with electro-optic phase shifters in each stage. We demonstrate that such design can be configured as a tunable coupler with arbitrary coupling ratio and with a uniform response over 50-nm spectral range around 1550~nm. The design is also tolerant to fabrication variations that affect the coupling ratios of the directional couplers.

Related Research Topics

• Tolerant silicon photonic microcircuits
• Reconfigurable Photonic Circuits
• Variability Aware Design

Related Projects

• ERC-CoG: PhotonicSWARM (Photonic Integrated Circuits using Scattered Waveguide elements in an Adaptive, Reconfigurable Mesh.)