Results 31 to 40 of about 80,084 (309)
High Precision Estimation of Laser FM-Noise Using RF Quadrature Demodulation Techniques
IEEE Access, 2022 We report on a technique that uses RF quadrature demodulation to measure laser FM-noise based on a delayed self-heterodyne setup. The measurement is self-referencing and the FM-noise can be measured with high precision over a sufficiently long duration ...
Sean P. O'duill, Liam P. Barry
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IEEE Photonics Journal, 2013 We demonstrate ultralow phase noise 10-GHz microwave signal generation from a free-running mode-locked Er-fiber laser with -142- and -157-dBc/Hz single-sideband absolute phase noise at 10- and 100-kHz offset frequencies, respectively.
Kwangyun Jung, Junho Shin, Jungwon Kim
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Amplitude and phase noise in two-membrane cavity optomechanics
Frontiers in Physics, 2023 Cavity optomechanics is a suitable field to explore quantum effects on macroscopic objects and develop quantum technology applications. A perfect control of the laser noise is required to operate the system in such extreme conditions necessary to reach ...
Francesco Marzioni +12 more
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IEEE Photonics Journal, 2017 The performance of higher order modulation formats such as 16-quadrature amplitude modulation (QAM) coherent optical communication systems are limited due to several linear and nonlinear impairments such as phase noise, frequency offset, chromatic ...
Ankita Jain +3 more
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Field-trial of an all-optical PSK regenerator/multicaster in a 40 Gbit/s, 38 channel DWDM transmission experiment [PDF]
, 2012 The performance of future ultra-long haul communication systems exploiting phase-encoded signals is likely to be compromised by noise generated during signal transmission.
Joseph Kakande +19 more
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, 2022 We present the development of a laser system for performing single-photon atom interferometry on the 698 nm clock transition in ultracold Strontium. We coherently combine the power of two Titanium:Sapphire lasers and demonstrate chirps of 200 MHz in 2.5 ...
Yiping Wang (1484218) +3 more
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Phase noise of frequency doublers in optical clock lasers
Optics Express, 2019 Frequency doublers are widely used in high-resolution spectroscopy to shift the operation wavelength of a laser to a more easily accessible or otherwise preferable spectral region. We investigate the use of a periodically-poled lithium niobate (PPLN) waveguide frequency doubler in an optical clock.
Sofia, Herbers +3 more
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Fibre segment interferometry using code-division multiplexed optical signal processing for strain sensing applications [PDF]
, 2013 A novel optical signal processing scheme for multiplexing fibre segment interferometers is proposed. The continuous-wave, homodyne technique combines code-division multiplexing with single-sideband modulation.
Charrett, Thomas O. H. +2 more
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IEEE Photonics Journal, 2018 Numerical and experimental investigations are carried out on the performance of parallelized Kalman filters applied for mitigation of the excess phase noise of fast tunable lasers.
Fan Liu +3 more
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Laser noise considerations for phase modulated links [PDF]
2011 IEEE Avionics, Fiber- Optics and Photonics Technology Conference, 2011 Photonic links employing intensity modulation with direct detection are typically unaffected by laser phase noise without a mechanism to convert that phase noise into intensity noise. Such mechanisms in long links include chromatic dispersion and double-Rayleigh scattering, the latter of which introduces multi-path interference (MPI).
Singley, Joseph M. +2 more
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