Results 31 to 40 of about 520,939 (335)
An Ultracompact OSNR Monitor Based on an Integrated Silicon Microdisk Resonator
IEEE Photonics Journal, 2012 Optical signal-to-noise ratio (OSNR) monitoring is essential for control and management of dynamic optical networks. Small footprint, low cost, and less power consumption are always desirable for such monitoring system.
Ke Xu +6 more
doaj +1 more source
Optical Fiber Vibration Sensor Using Least Mean Square Error Algorithm
Sensors, 2020 In order to enhance the signal-to-noise ratio (SNR) of a distributed optical fiber vibration sensor based on coherent optical time domain reflectometry (COTDR), a high extinction ratio cascade structure of an acousto-optic modulator and semiconductor ...
Yu Wang +6 more
doaj +1 more source
, 1999 A recent theory is reviewed for the shot noise of coherent radiation propagating through a random medium. The Fano factor P/I (the ratio of the noise power and the mean transmitted current) is related to the scattering matrix of the medium.
Beenakker, C. W. J., Patra, M.
core +5 more sources
Noise Reduction on Received Signals in Wireless Ultraviolet Communications Using Wavelet Transform
IEEE Access, 2020 In wireless ultraviolet optical communications, noise is one of the most essential factors affecting the communication system performance. This paper presents a scheme of reducing noise in the received ultraviolet signal using wavelet transform ...
Peng Song +3 more
doaj +1 more source
Electronics Letters, 2022 It is known that 80% power effective data segmentation with Airy and Gaussian point spread functions (PSFs) for 2D imaging achieves sufficient Fisher information and is appropriate to define signal‐to‐noise ratio (SNR) of a data frame.
Mingyan Sun, Yi Sun
doaj +1 more source
Sagnac Interferometer Enhanced Particle Tracking in Optical Tweezers
, 2010 A setup is proposed to enhance tracking of very small particles, by using optical tweezers embedded within a Sagnac interferometer. The achievable signal-to-noise ratio is shown to be enhanced over that for a standard optical tweezers setup.
Berne B J +9 more
core +1 more source
Demodulation of intensity and shot noise in the optical heterodyne detection of laser interferometers for gravitational waves [PDF]
, 2001 Demodulation of intensity noise in the optical heterodyne detector is analyzed for application in interferometric gravitational-wave detectors. The correlation function and the power spectral density of the demodulated intensity noise are derived, taking
Rakhmanov, Malik
core +1 more source
Two-photon-absorption-based OSNR monitor for NRZ-PSK transmission systems [PDF]
, 2010 A two-photon absorption microcavity-based technique for monitoring in-band optical signal-to-noise ratio (OSNR) in nonreturn-to-zero phase-shift-keying systems is presented.
Anandarajah, Prince M. +10 more
core +1 more source
Integrated in-band optical signal-to-noise ratio monitor implemented on SOI platform.
Optics Express, 2012 Based on different coherence properties of signal and noise, we measured the in-band optical signal-to-noise ratio using an integrated thermally tunable Mach-Zehnder optical delay interferometer on SOI platform.
L. Jia +6 more
semanticscholar +1 more source
IEEE Photonics Journal, 2019 We propose and experimentally demonstrate a photonic millimeter-wave frequency divider based on a super-harmonic injection-locked optoelectronic oscillator (OEO) and an optical frequency comb.
Yongchi Xu +7 more
doaj +1 more source