Digitally enhanced Multi-wavelength Stabilization using a Passive Fiber Frequency Reference
Abstract
High-stability frequency stabilization between lasers is essential for applications such as precision metrology, frequency dissemination, and quantum communications. We demonstrate the use of code-based multiplexing of a passive fiber-based interferometer for frequency stabilization and transfer between lasers separated by 85 GHz in frequency using a single shared passive reference. Out-of-loop characterization places an upper bound of sub-kHz/√(Hz) on the transferred frequency noise at Fourier frequencies above 40 mHz, with a differential fractional stability of 7×10−13 at 1 second. We also demonstrate continuous laser tunability and characterize the residual length noise coupling. Finally, we provide a framework for scaling the architecture to higher laser counts, offering a pathway to scalable, frequency agile stabilization of multiple light sources without the overhead of an optical frequency comb.
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BibTeX
@misc{karlsson2026digitally,
title = {{Digitally enhanced Multi-wavelength Stabilization using a Passive Fiber Frequency Reference}},
author = {Hilma Karlsson and Vaishali Adya and Robert L. Ward and Chathura P. Bandutunga},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.01575},
eprint = {2610.01575},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.01575},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Digitally enhanced Multi-wavelength Stabilization using a Passive Fiber Frequency Reference
AU - Hilma Karlsson
AU - Vaishali Adya
AU - Robert L. Ward
AU - Chathura P. Bandutunga
PY - 2026
DA - 2026/10/01
PB - arXiv
DO - 10.48550/arxiv.2610.01575
UR - https://arxiv.org/abs/2610.01575
AB - High-stability frequency stabilization between lasers is essential for applications such as precision metrology, frequency dissemination, and quantum communications. We demonstrate the use of code-based multiplexing of a passive fiber-based interferometer for frequency stabilization and transfer between lasers separated by 85 GHz in frequency using a single shared passive reference. Out-of-loop characterization places an upper bound of sub-kHz/√(Hz) on the transferred frequency noise at Fourier frequencies above 40 mHz, with a differential fractional stability of 7×10^−13 at 1 second. We also demonstrate continuous laser tunability and characterize the residual length noise coupling. Finally, we provide a framework for scaling the architecture to higher laser counts, offering a pathway to scalable, frequency agile stabilization of multiple light sources without the overhead of an optical frequency comb.
ER -