Monolithic On-Chip Magneto-Optical Isolator With 3 Db Insertion Loss And 40 Db Isolation Ratio

Keywords

chalcogenide glass; grayscale-lithography; integrated optics devices; Isolators; magneto-optical materials; resonators

Abstract

On-chip optical isolators constitute an essential building block for photonic integrated circuits (PICs). Here, we experimentally demonstrated a magneto-optical isolator monolithically integrated on silicon featuring 3 dB insertion loss and 40 dB isolation ratio, both of which represent significant improvements over state-of-the-art. The isolator is also fully passive and operates under a simple unidirectional magnetization scheme. Such superior performance is enabled through a three-way combination of a strip-loaded waveguide design, a compositionally optimized chalcogenide glass as the light guiding medium, and low-loss taper structures created via gray -scale lithographic processing. The device represents an important step toward a practical solution for on-chip isolation in PICs.

Publication Date

12-19-2018

Publication Title

ACS Photonics

Volume

5

Issue

12

Number of Pages

5010-5016

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1021/acsphotonics.8b01257

Socpus ID

85058785299 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85058785299

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