A Compact Silicon Based 1 × 2 MMI Switch Based on Carrier Injection Based Refractive Index Change
Year: 2025
Type: article
Abstract: We present a compact silicon-based 1×2 multimode interference (MMI) switch that utilizes carrier injection for optical switching. The mechanism involves selectively injecting carriers into designated regions of the MMI core via a p-i-n diode, inducing a refractive index change of -0.0423 under a 1.4 V bias. The device exhibits low crosstalk of -31.53 dB within a footprint of 7$\mu$m × 42$\mu$m. A fast switching speed of 1.15ns is achieved along with a low power consumption of 15.3mW.
Source: IEEE photonics journal
Authors: Krishnanunni R. A, Sooraj Ravindran
Institution: Indian Institute of Space Science and Technology
Language: English
Topic: Photonic and Optical Devices
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,075
OpenAlex ID: W4410087234