Stable thin-film lithium tantalate modulators operating at high temperature for uncooled operation
Optics
2026-05-01 v1
Abstract
We demonstrate stable operation of a thin-film lithium tantalate (TFLT) modulator at very high operating temperatures. We show that the electro-optic modulation and bandwidth of the TFLT modulators are not affected by high-temperature operation, and both waveguide and resonant modulators are DC-bias stable even at 120{\deg}C. At higher temperatures, we even observe 10% reduction of the V{\pi} of the modulator. Our results position TFLT modulators as a strong candidate for uncooled operation in co-packaged optics.
Cite
@article{arxiv.2604.27285,
title = {Stable thin-film lithium tantalate modulators operating at high temperature for uncooled operation},
author = {Ayed Al Sayem and Shiekh Zia Uddin and Ting-Chen Hu and Alaric Tate and Mark Cappuzzo and Rose Kopf and Mark Earnshaw},
journal= {arXiv preprint arXiv:2604.27285},
year = {2026}
}
Comments
6 pages, 4 figures