Results 11 to 20 of about 395 (125)
PhotonicsA Doppler velocity simulation method based on serrodyne modulation is proposed to achieve the frequency shift from hundred hertz to megahertz. One sub-phase modulation (PM) in a dual-parallel dual-drive Mach–Zehnder modulator loads a sawtooth signal to ...
Zhe Liu +6 more
doaj +4 more sources
Broadband serrodyne phase modulation for optical frequency standards and spectral purity transfer
Optics Letters, 2023 We perform low phase noise, efficient serrodyne modulation for optical frequency control and spectral purity transfer between two ultrastable lasers. After characterizing serrodyne modulation efficiency and its bandwidth, we estimate the phase noise induced by the modulation setup by developing a novel, to the best of our knowledge, composite self ...
M. Barbiero +6 more
openaire +4 more sources
Closed-loop resonant fiber optic gyro with an improved digital serrodyne modulation
Optics Express, 2013 To widen the linear dynamic range and improve the linearity, a closed-loop resonant fiber optic gyro (RFOG) is proposed and experimentally demonstrated. To overcome the effect of the imperfect serrodyne modulation, an improved frequency shifting module is designed and constructed on a LiNbO3 phase modulator. Its frequency resolution is improved to 0.01
Zhonghe, Jin, Xuhui, Yu, Huilian, Ma
openaire +4 more sources
Microwave Photonic Frequency Translators With Large Spurious Suppression and Wide Bandwidth
IEEE Photonics Journal, 2021 Two new photonics-based microwave frequency translators are presented. They are based on Serrodyne modulation to frequency translate an optical carrier, which beats with a microwave signal sideband at a photodetector to generate a frequency translated ...
Chongjia Huang, Erwin H. W. Chan
doaj +1 more source
PhotoniX, 2023 We demonstrate a compact heterodyne Laser Doppler Vibrometer (LDV) based on the realization of optical frequency shift in the silicon nitride photonic integration platform (TriPleX).
Adam Raptakis +23 more
doaj +1 more source
Serrodyne frequency translation using time-modulated metasurfaces [PDF]
2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, 2019 submitted also to IEEE Transactions on Antennas and ...
Zhanni Wu, Anthony Grbic
openaire +2 more sources
All-Optical Pulsed Signal Doppler Frequency Shift Measurement System
IEEE Photonics Journal, 2021 A simple and all-optical Doppler frequency shift (DFS) measurement system is presented. It is based on a dual-drive Mach Zehnder modulator (DDMZM) driven by a transmitted signal and an echo signal received by an antenna.
Chongjia Huang, Erwin H. W. Chan
doaj +1 more source
Photonic-Assisted Microwave Frequency and Phase Shifter for Deception Jamming
IEEE Photonics Journal, 2021 A new microwave photonic signal processing structure that has the ability to realise frequency and phase shifting operation is presented. The proposed structure uses Serrodyne phase modulation in a dual-polarisation binary phase shift keying (DP-BPSK ...
Chongjia Huang, Erwin H. W. Chan
doaj +1 more source
Control and Measurement of Quantum Light Pulses for Quantum Information Science and Technology
Advanced Quantum Technologies, Volume 4, Issue 9, September 2021., 2021 Temporal‐spectral properties of quantum light are a promising platform for optical quantum technologies. Here, approaches to control and measure quantum light pulses by applying targeted spectral and temporal phase modulation are reviewed.
Michał Karpiński +4 more
wiley +1 more source