Results 1 to 10 of about 786,843 (253)
Deep phase modulation interferometry [PDF]
Optics Express, 2010 We have developed a method to equip homodyne interferometers with the capability to operate with constant high sensitivity over many fringes for continuous real-time tracking.
Acernese +28 more
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Single-Shot Compressed Imaging via Random Phase Modulation
Applied Sciences, 2022 Compressed sensing (CS) provides an innovative framework for signal sampling, which enables accurate recovery of the sparse or compressible signal from a small set of linear measurements far fewer than the Nyquist rate in traditional signal processing ...
Cheng Zhang +5 more
doaj +1 more source
Phase-Modulation-Based Stable Radio Frequency Transmission via 125 km Fiber Optic Link
IEEE Photonics Journal, 2023 This paper proposes a stable radio frequency (RF) transfer scheme based on phase modulation. The passive compensation method is used to compensate the phase variations.
Chenxia Liu +5 more
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IEEE Photonics Journal, 2021 In the resonator fiber optic gyroscope (RFOG), both the residual intensity modulation (RIM)-induced error and backscattering-induced noise need to be effectively suppressed. When the clockwise and counterclockwise resonance detection adopt the same phase
Zhiguo Jiang, Ruqing Chen, Zongfu Hu
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Photonics, 2022 In this paper, we proposed a reflection phase electrically tunable metasurface composed of an Au/Al2O3/ITO/Au grating structure. This antenna array can achieve a broad phase shift continuously and smoothly from 0° to 320° with a 5.85 V applied voltage ...
Xin Li +3 more
doaj +1 more source
Configurable Modulator for Pure Phase Modulation [PDF]
2019 Photonics North (PN), 2019 We present a configurable silicon modulator for pure phase modulation, implemented as a Mach-Zehnder interferometer with a PN carrier depletion modulator (CDM) and tunable couplers. The spurious intensity modulation introduced by the CDM is compensated by tuning the splitting ratios of the couplers and the phase delay between the arms.
Deng, Hong, Bogaerts, Wim
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Photonics, 2022 High-power laser pulse transmitted by phase modulation with certain spectrum distribution can suppress the buildup of transverse stimulated Brillouin scattering (TSBS) in large aperture laser optics and smooth the speckle pattern illuminating the target ...
Xinlei Qian +6 more
doaj +1 more source
High-Resolution Optical Fiber Temperature Sensor Based on Draw Tower Grating Array
Sensors, 2022 Ocean temperature monitoring is of great significance to marine fishing, aquaculture, and marine operations. Traditional electric sensors lack the potential to multiplex several sensors, and may suffer from electromagnetic interference.
Hanjie Liu +5 more
doaj +1 more source
Irrotational Nanobricks Based High-Efficiency Polarization-Independence Metasurfaces
IEEE Photonics Journal, 2020 The polarization-independence optical metasurface has attracted great interests due to breaking the polarization limitations. In general, polarization-independence characteristics of metasurface almost always originates from the polarization-independence
Wei Wang +5 more
doaj +1 more source
Cross-phase modulation imaging [PDF]
Optics Letters, 2012 We demonstrate a cross-phase modulation measurement technique based on the sensitive detection of modulation transfer in a pump-probe setup. By modulating the amplitude of the pump beam and spectrally analyzing the probe beam, we achieve a rapid, background-free measurement of nonlinear phase modulation using power levels acceptable in biological ...
Prathyush, Samineni +4 more
openaire +2 more sources