activity
20202025
most citedThermo-Optic Properties of Silicon-Rich Silicon Nitride for On-chip Applications

65 citations · 111 across the 6 of their papers we have counts for

collaborators

6 papers

physics.optics2025

Ultralow-VπL Silicon Electro-Optic Directional Coupler Switch with a Liquid Crystal Cladding

Li-Yuan Chiang, Chun-Ta Wang, Steve Pappert +1

An ultralow-VπL photonic switch device is demonstrated utilizing the high optical and electrical field confinement in silicon slot waveguides coupled with the strong electro-optic…

physics.optics2022★ 6 cited

Realization of a wide steering end-fire facet optical phased array using silicon rich silicon nitride

Hani Nejadriahi, Prabhav Gaur, Karl Johnson +3

The design, fabrication, and characterization of a 16-element optical phased array (OPA) using a high index (n = 3.1) silicon rich silicon nitride (SRN) is demonstrated. We present…

physics.optics2022

Efficient thermo-optic micro-ring phase shifter made of PECVD silicon-rich amorphous silicon carbide

Li-Yang Sunny Chang, Steve Pappert, Paul K. L. Yu

In this work, the thermo-optic coefficient (TOC) of the silicon-rich amorphous silicon carbide (a-SiC) thin film deposited by plasma-enhanced chemical vapor deposition is character…

physics.optics2022★ 9 cited

Silicon-organic hybrid thermo-optic switch based on a slot waveguide directional coupler

Li-Yuan Chiang, Chun-Ta Wang, Steve Pappert +1

We propose and demonstrate a passively biased 2 by 2 thermo-optic switch with high power efficiency and fast response time. The device benefits from the highly concentrated optical…

physics.app-ph2021★ 31 cited

Efficient and compact thermo-optic phase shifter in silicon-rich silicon nitride

Hani Nejadriahi, Steve Pappert, Yeshaiahu Fainman +1

The design, fabrication, and characterization of low loss ultra-compact bends in high index (n = 3.1 at λ = 1550 nm) PECVD silicon rich silicon nitride (SRN) is demonstrated and ut…

physics.app-ph2020★ 65 cited

Thermo-Optic Properties of Silicon-Rich Silicon Nitride for On-chip Applications

Hani Nejadriahi, Alex Friedman, Rajat Sharma +3

We demonstrate the thermo-optic properties of silicon-rich silicon nitride (SRN) films deposited using plasma-enhanced chemical vapor deposition (PECVD). Shifts in the spectral res…