Homodyne coherent detection of ASK and PSK signals performed by a subcarrier optical phase-locked loop [PDF]
, 2005 Optical transmission systems based on homodyne coherent detection of 2-ASK and pilot carrier 2-PSK signals have been implemented. ASK data has been transmitted at 2.5 Gbps, while 2.5 Gbps and 10 Gbps PSK systems have been tested.
Camatel, S., Ferrero, Valter
core +2 more sources
Procedure to optimize the intercarrier spacing in superchannels impaired by the cascading of WSS-based ROADMs [PDF]
EPJ Web of Conferences, 2020 A new procedure is proposed to optimize the intercarrier spacing and wavelength selective switch (WSS) bandwidth for superchannels, using a Monte Carlo simulation.
Pereira Paulo J. +2 more
doaj +1 more source
Efficient binary phase quantizer based on phase sensitive four wave mixing [PDF]
, 2014 We experimentally demonstrate an efficient binary phase quantizer operating at low pump powers. Phase-sensitive operation is obtained by polarization mixing the phase-locked signal/idler pair in a degenerate dual-pump vector parametric ...
Hesketh, G. +5 more
core +1 more source
The key management of direct/external modulation semiconductor laser response systems for relative intensity noise control [PDF]
, 2021 This study outlines the management of either direct or external modulation semiconductor laser systems for the key solution of bit rate up to 25 Gb/s under relative intensity noise (RIN) control.
A. Mohammed, Abd El-Naser +5 more
core +3 more sources
Electronic equalization for advanced modulation formats in dispersion-limited systems [PDF]
, 2004 We investigate in this letter the use of electronic equalization on dispersion limited systems for different modulation formats. Besides analyzing equalization on standard NRZ intensity modulation as a reference, we focus on two advanced modulation ...
Curri, Vittorio +3 more
core +1 more source
Impact of traffic load and spectral occupancy on Gaussian noise models performance for multiband networks [PDF]
, 2022 In a network scenario, wavelength division multiplexing channels are added and dropped leading to fluctuations on the network traffic loads along the optical path.
Cancela, L., Rebola, J., Venda, P.
core +1 more source
QPSK Signal Regeneration Based on Vector Phase Sensitive Amplification With Low Pump Powers
IEEE Access, 2019 In this paper, an all-optical quadrature phase shift keying (QPSK) phase regeneration scheme using vector phase sensitive amplification (PSA) is proposed, analyzed, and simulated. Compared with the conventional scalar PSA scheme, the vector superposition
Zhen Xing, Hongxiang Wang, Yuefeng Ji
doaj +1 more source
A Density Clustering Algorithm for Simultaneous Modulation Format Identification and OSNR Estimation
Applied Sciences, 2020 In this work, we propose a combined method to implement both modulation format identification (MFI) and optical signal-to-noise ratio (OSNR) estimation, a method based on density-based spatial clustering of applications with a noise (DBSCAN) algorithm ...
Zhao Zhao +3 more
doaj +1 more source
IEEE Access, 2022 Free-space optical communication (FSOC) systems with variable data-rates can support different missions with different transmission distances and ensure reliable transmission in periods of unfavorable weather conditions.
Faming Li +6 more
doaj +1 more source
Optical Performance Monitoring Technology of IMDD System based on Deep Neural Network
Guangtongxin yanjiu, 2023 In advanced high-speed fiber optic communication systems, due to the introduction of dense wavelength division multiplexing technology, the signal spectral interval is getting narrower and narrower, and the traditional out-of-band Optical Signal-to-Noise
LIU Jun +8 more
doaj