Passive Optical Phase Stabilization on a Ring Fiber Network
arXiv:2102.12360 · doi:10.1109/JLT.2020.3006091
Abstract
Optical frequency transfer provides the means for high-fidelity frequency transfer across thousands of kilometers. A critical step in the further developing optical frequency transfer is its capability to transfer a high spectral purity feature from ultrastable lasers or optical clocks to any remote locations and, at the same time, its adaptability to incorporate the optical frequency transfer technique into any existing communication networks with different topologies. Here we for the first time report a technique that delivers optical-frequency signals to multiple independent remote hubs along a ring optical-fiber network with passive phase stabilization. The technique automatically corrects optical-fiber length fluctuations of arbitrary hubs along the loop by mixing and shifting optical signals. Without the help of an active phase tracker and a compensator, it could significantly mitigate some technical problems such as the limited compensation speed and phase recovery time, the phase jitter contamination caused by the servo bump in conventional phase noise cancellation. Moreover, by transmitting optical signals along both directions using the same optical source, it can improve the signal-to-noise ratio at each hub. This technique maintains the same delay-limited phase noise correction capability as in conventional techniques and, furthermore, improves the phase jitter by a factor of 3, opening a way to a broad distribution of an ultrastable frequency reference with high spectral purity and enabling a wide range of applications beyond metrology over a ring fiber network with the naturally impressive reliability and scalability.
9 pages, 6 figures
References in corpus (19)
- Search for New Physics with Atoms and Molecules
- Measurement of the fine-structure constant as a test of the Standard Model
- Atomic clock performance beyond the geodetic limit
- Geodesy and metrology with a transportable optical clock
- Gravitational wave detection with optical lattice atomic clocks
- Ultra-stable optical clock with two cold-atom ensembles
- A New Method for Gravitational Wave Detection with Atomic Sensors
- Search for ultralight scalar dark matter with atomic spectroscopy
- High-resolution microwave frequency dissemination on an 86-km urban optical link
- Coherent optical frequency transfer at 5e-19 over a doubled 642 km fiber link
- Quantum cascade laser frequency stabilisation at the sub-Hz level
- Cascaded multiplexed optical link on a telecommunication network for frequency dissemination
- Atom interferometry with the Sr optical clock transition
- Coherent optical phase transfer over a 32-km fiber with 1-s instability at
- Eavesdropping time and frequency: phase noise cancellation along a time-varying path, such as an optical fiber
- In-line extraction of an ultra-stable frequency signal over an optical fiber link
- Fiber Based Multiple-Access Optical Frequency Dissemination
- Passive Optical Phase Noise Cancellation
- Multi-node optical frequency dissemination with post automatic phase correction