Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Optics Letters

Optical parametric mixer-based passive phase correction for stable transfer of millimeter waves

Xiaojie Guo, Xiaocheng Wang, Zhaohui Li, Yi Dong

Published Sep 28, 2016• 6 citations
Publisher

Abstract

We propose to use a parametric mixer in a passive phase correction scheme for stable distribution of a millimeter-wave signal over fiber links. The parametric mixer is realized via ultrafast four-wave mixing processes, thereby overcoming the bandwidth limit of conventional electronic devices. The mixing of round-trip probe and local pumps generates a signal immune to transmission delay fluctuations at the remote end. This scheme is validated by an experiment that distributes a 36-GHz millimeter wave over 20-km optical fiber. The remote frequency stability achieves 4.0×10−16 at 2000 s, indicating that this approach is promising for phase-stabilized delivery of high-frequency signals.

DOI
10.1364/ol.41.004574

Related papers

Phase-Stabilized Delivery for Multiple Local Oscillator Signals via Optical Fiber

Anxu Zhang, Yitang Dai, Feifei Yin +5 more

In this paper, we propose and demonstrate a multiple local oscillator (LO) signal phase stabilization technique for long-distance fiber delivery. One of the LO signals, which acts as a reference single, is round-trip transferred between the central station and the remote end, carrying the phase variation arises from perturbations of the fiber link. The wavelength of the optical carrier is adjusted according to the phase variation of the reference LO, to stabilize the delay of the fiber link. Once the delay of the link is stabilized, the phases of other LO signals that transferred through the same fiber link will all be stabilized. Meanwhile, the delay tunable range is in proportion to the fiber length, which means a very long delivery distance can be expected. Experimentally, LOs at frequencies of 2.46 GHz and 8 GHz are transferred through a 30-km fiber link, and significant phase drift compression is observed at both frequencies.

IEEE photonics journal•May 13, 2014•23 citations

Radio-Frequency Transfer over a 1007-km Fiber Link by Passive Phase Conjugation

Fan Hu, Chenxia Liu, Dongxing Wang +4 more

We have demonstrated accurate frequency transfer via an ultra long span optical-fiber link by passive phase conjugation, which is based on frequency mixing. Combing with the phase-lock-loop, our compensation technique can eliminate the effect of phase noise that introduced during the optical-fiber transmission, so the phase of remote signal is synchronized to the phase of local reference signal. The transfer stability of our experiment with 2.4 GHz frequency signal through a 1007 km fiber link is 6.9_10-14/s and 4.1_10-16/104s.

Asia Communications and Photonics Conference•Oct 1, 2018•0 citations

Multi-access fiber-optic radio frequency transfer with passive phase noise compensation

Hongwei Li, Guiling Wu, Jiapeng Zhang +2 more

In this Letter, we propose and demonstrate a multi-access fiber-optic radio frequency dissemination with passive phase noise cancelation. A forward phase-conjugated signal is generated at the local site by frequency mixing between the standard signal and the round-trip probe signal. A stable frequency signal is achieved by frequency mixing the tapped forward phase-conjugated signal and the backward probe signal at an arbitrary point along the fiber link. Different wavelengths for forward and backward directions are employed to efficiently suppress the effect of backscattering. At the same time, the increase of bidirectional asymmetry with the increase of user ends is avoided by employing the same wavelengths for all user ends. A multi-access frequency transfer over a 45 km fiber link based on the proposed scheme is demonstrated. The radio frequency signals with relative frequency stabilities of 10−17/20,000 s level are reproduced at two points of 5 and 40 km far from the local site along the fiber link, respectively.

Optics Letters•Dec 1, 2016•28 citations

Passive phase noise compensation for fiber-optic radio frequency transfer with a nonsynchronized source

Tiancheng Lin, Guiling Wu, Hongwei Li Hongwei Li +2 more

We propose a passive compensation fiber-optic radio frequency (RF) transfer scheme with a nonsynchronized RF stable source during a round-trip time, which can avoid high-precision phase-locking and efficiently suppress the effect of backscattering only using two wavelengths at the same time. A stable frequency signal is directly reproduced by frequency mixing at the remote site. The proposed scheme is validated by the experiment over a 40 km single mode fiber spool using nonsynchronized common commercial RF sources. The influence of the stability of nonsynchronized RF sources on the frequency transfer is investigated over different length fiber links.

Chinese Optics Letters•Jan 1, 2018•5 citations

Fiber based multiple-access stable radio frequency phase delivery

Zhongle Wu, Yitang Dai, Anxu Zhang +3 more

Phase-stable radio frequency (RF) transfer attracts a growing research interest and attention in recent years, and transferring high stable RF signal to multiple places is greatly needed in many important applications such as frequency synchronization for very long base-line interferometry and connected-element interferometry in radio astronomy. [1]. For example, the Atacama Large Millimeter Array (ALMA) radio astronomy project is consist of an array of up to 64 antennas, and in order to achieve the unprecedented sensitivity and angular resolution, requires the local oscillator reference signal arriving at remote antennas with a maximum path length up to 18 kilometers must be stabilized under one picosecond [2]. The optical fiber link is a promising method for long-distance highly stable frequency distribution, however it suffers from the environment perturbations such as physical vibration and temperature fluctuations, which degrade the phase stability to be delivered [3].

IEEE Avionics, Fiber-Optics and Photonics Technology Conference (AVFOP)•Oct 1, 2013•0 citations

Ultra-stable wideband signal transfer for distributed systems

Xi Wang, Wei Wei, Weilin Xie +1 more

We present an ultra-stable wideband signal distribution system via a star-like fiber network. By inserting a 26 GHz probe signal and precisely measuring its round-trip delay variation with double optical mixing, the link length variation has been accurately compensated, leading to a distributed transmission network with stability on the order of femtosecond. Experimentally, a wideband signal ranging from 8 GHz to 12 GHz is distributed from a local end to 2 remote ends via 20 km fiber links. The root-mean-square delay jitters of the transmitted wideband signals are between 10 to 20 femtoseconds within an hour. The proposed wideband signal transfer scheme is highly desired for distributed systems with high stability and strict coherence requirements.

International Topical Meeting on Microwave Photonics•Oct 1, 2022•1 citation
We propose to use a parametric mixer in a passive phase correction scheme for stable distribution of a millimeter-wave signal over fiber links. The parametric mixer is realized via ultrafast four-wave mixing processes, thereby overcoming the bandwidth limit of conventional electronic devices. The mixing of round-trip probe and local pumps generates a signal immune to transmission delay fluctuations at the remote end. This scheme is validated by an experiment that distributes a 36-GHz millimeter wave over 20-km optical fiber. The remote frequency stability achieves 4.0×10−16 at 2000 s, indicating that this approach is promising for phase-stabilized delivery of high-frequency signals.
In this paper, we propose and demonstrate a multiple local oscillator (LO) signal phase stabilization technique for long-distance fiber delivery. One of the LO signals, which acts as a reference single, is round-trip transferred between the central station and the remote end, carrying the phase variation arises from perturbations of the fiber link. The wavelength of the optical carrier is adjusted according to the phase variation of the reference LO, to stabilize the delay of the fiber link. Once the delay of the link is stabilized, the phases of other LO signals that transferred through the same fiber link will all be stabilized. Meanwhile, the delay tunable range is in proportion to the fiber length, which means a very long delivery distance can be expected. Experimentally, LOs at frequencies of 2.46 GHz and 8 GHz are transferred through a 30-km fiber link, and significant phase drift compression is observed at both frequencies.
We have demonstrated accurate frequency transfer via an ultra long span optical-fiber link by passive phase conjugation, which is based on frequency mixing. Combing with the phase-lock-loop, our compensation technique can eliminate the effect of phase noise that introduced during the optical-fiber transmission, so the phase of remote signal is synchronized to the phase of local reference signal. The transfer stability of our experiment with 2.4 GHz frequency signal through a 1007 km fiber link is 6.9_10-14/s and 4.1_10-16/104s.
In this Letter, we propose and demonstrate a multi-access fiber-optic radio frequency dissemination with passive phase noise cancelation. A forward phase-conjugated signal is generated at the local site by frequency mixing between the standard signal and the round-trip probe signal. A stable frequency signal is achieved by frequency mixing the tapped forward phase-conjugated signal and the backward probe signal at an arbitrary point along the fiber link. Different wavelengths for forward and backward directions are employed to efficiently suppress the effect of backscattering. At the same time, the increase of bidirectional asymmetry with the increase of user ends is avoided by employing the same wavelengths for all user ends. A multi-access frequency transfer over a 45 km fiber link based on the proposed scheme is demonstrated. The radio frequency signals with relative frequency stabilities of 10−17/20,000 s level are reproduced at two points of 5 and 40 km far from the local site along the fiber link, respectively.
We propose a passive compensation fiber-optic radio frequency (RF) transfer scheme with a nonsynchronized RF stable source during a round-trip time, which can avoid high-precision phase-locking and efficiently suppress the effect of backscattering only using two wavelengths at the same time. A stable frequency signal is directly reproduced by frequency mixing at the remote site. The proposed scheme is validated by the experiment over a 40 km single mode fiber spool using nonsynchronized common commercial RF sources. The influence of the stability of nonsynchronized RF sources on the frequency transfer is investigated over different length fiber links.
Phase-stable radio frequency (RF) transfer attracts a growing research interest and attention in recent years, and transferring high stable RF signal to multiple places is greatly needed in many important applications such as frequency synchronization for very long base-line interferometry and connected-element interferometry in radio astronomy. [1]. For example, the Atacama Large Millimeter Array (ALMA) radio astronomy project is consist of an array of up to 64 antennas, and in order to achieve the unprecedented sensitivity and angular resolution, requires the local oscillator reference signal arriving at remote antennas with a maximum path length up to 18 kilometers must be stabilized under one picosecond [2]. The optical fiber link is a promising method for long-distance highly stable frequency distribution, however it suffers from the environment perturbations such as physical vibration and temperature fluctuations, which degrade the phase stability to be delivered [3].
We present an ultra-stable wideband signal distribution system via a star-like fiber network. By inserting a 26 GHz probe signal and precisely measuring its round-trip delay variation with double optical mixing, the link length variation has been accurately compensated, leading to a distributed transmission network with stability on the order of femtosecond. Experimentally, a wideband signal ranging from 8 GHz to 12 GHz is distributed from a local end to 2 remote ends via 20 km fiber links. The root-mean-square delay jitters of the transmitted wideband signals are between 10 to 20 femtoseconds within an hour. The proposed wideband signal transfer scheme is highly desired for distributed systems with high stability and strict coherence requirements.