A tunable FP Perot coupling interferometer on thin-film lithium niobate
Optics
2025-09-11 v2
Abstract
We experimentally show an electro-optic tunable Fabry-Perot cavity on thin-film lithium niobate (TFLN). Instead of tuning the cavity phase and thus resonant frequency, we demonstrate modulation of the FP cavity by tuning the cavity mirrors via the electro-optic effect in the couplers. We enable full tuning of a low-Q FP cavity with only 3.5 V Vpi and a very short 3.5 mm long Mach-Zehnder interferometer (MZI) mirror.
Cite
@article{arxiv.2509.05763,
title = {A tunable FP Perot coupling interferometer on thin-film lithium niobate},
author = {Ayed Al Sayem and Heqing Huang and Ting-Chen Hu and Alaric Tate and Mark Cappuzzo and Rose Kopf and Mark Earnshaw},
journal= {arXiv preprint arXiv:2509.05763},
year = {2025}
}