Controlling Microring Resonator Extinction Ratio via Metal‐Halide Perovskite Nonlinearity
Abstract
The exceptionally high optical nonlinearities, wide bandgap, and homogeneity in solution‐processed metal‐halide perovskite media are utilized as optical nonlinear elements on a silicon photonic platform for low‐power‐active components, such as all‐optical switches, modulators, and lasers. With room temperature back‐end‐of‐line compatible processing, a hybrid metal‐halide perovskite (CH3NH3PbI3) microring resonator (MRR) structure is fabricated on a foundry‐processed low‐loss silicon photonic platform. With in‐plane excitation near the light intensity of 110 W m−2, strong two‐photon absorption and free‐carrier absorption saturation are observed. With 103 field enhancements by MRRs, the photorefractive effect in the metal‐halide perovskite reduces linear absorption, represented by 102 improvement of the MRR's intrinsic quality factor and 20 dB enhancement of the extinction ratio.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 08, 2021
- Source ID
- 10.1002/adom.202100783
Entities
People
- Anishkumar Soman
- Barry P Rand
- Feifan Wang
- Hwaseob Lee
- Lianfeng Zhao
- Thomas Kananen
- Tiantian Li
- Tingyi Gu
- Xiaoyong Hu
- Yahui Xiao
- Yixiu Wang
Organizations
- Air Force Office of Scientific Research
- Army Research Office
- Peking University
- Princeton University
- University of Delaware