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: | 26 (Dimensions.ai - last update: 29/9/2024) 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
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