Preprint Article Version 1 This version is not peer-reviewed

2x4 Hybrid MZI-MMI Configuration with MMI Phase-shifters as a High-speed Optical Switch with Low Power Consumption

Version 1 : Received: 14 January 2019 / Approved: 15 January 2019 / Online: 15 January 2019 (09:46:06 CET)

How to cite: Niraula, B.; Rizal, C. 2x4 Hybrid MZI-MMI Configuration with MMI Phase-shifters as a High-speed Optical Switch with Low Power Consumption. Preprints 2019, 2019010148 (doi: 10.20944/preprints201901.0148.v1). Niraula, B.; Rizal, C. 2x4 Hybrid MZI-MMI Configuration with MMI Phase-shifters as a High-speed Optical Switch with Low Power Consumption. Preprints 2019, 2019010148 (doi: 10.20944/preprints201901.0148.v1).

Abstract

This paper reports 2 × 4 hybrid Mach-zehnder interferometer (MZI) - multi-mode interferometers (MMI) based compact thermo-optical switch consisting of slab waveguides on silicon-on-insulator, SOI, platform. The device consists of two identical MMIs, each of 6 μm wide and 140 μm long connected with two phase shifters MMIs each with 2 μm wide and 8 μm long and linear tappers each 4 μm long, connected at both ends of the MMIs to minimize the power coupling loss. The loss for linear taper is found to be below 0.02dB. The footprint of the whole device is six 6 μm × 324 μm. This structure is based on unique multimode region shape, which leads optical switch to have less coupling loss and reduced cross-talk. The average thermo-optical switching power consumption is 1.4 mW, the excess losses are 0.8 dB, and the imbalances are 0.1 dB. Aluminum is used as a heating pad, and a trench is created around this pad to prevent from spreading of heat and reduce power loss almost by a factor of 2 to the adjacent phase shifter. Our new heating method has advantages of compact size and ease of fabrication with the current CMOS technology.

Subject Areas

Multimode Interferometer, thermo-optical Switch, phase shifter, Silicon on Insulator, SOI technology, bio-sensor

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our diversity statement.

Leave a public comment
Send a private comment to the author(s)
Views 0
Downloads 0
Comments 0
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.