Results 11 to 20 of about 398,204 (291)
Coherent terabit communications with microresonator Kerr frequency combs
Nature Photonics, 2014 Optical frequency combs enable coherent data transmission on hundreds of wavelength channels and have the potential to revolutionize terabit communications.
Brasch, Victor +16 more
core +4 more sources
IEEE Photonics Journal, 2019 Modulation format identification (MFI) is necessary for future elastic optical networks. We propose an MFI scheme based on the amplitude deviation analysis of the received optical communication signal.
Zhao Zhao +3 more
doaj +1 more source
Coherent communication with linear optics [PDF]
Physical Review A, 2008 We show how to implement several continuous-variable coherent protocols with linear optics. Noise can accumulate when implementing each coherent protocol with realistic optical devices. Our analysis bounds the level of noise accumulation. We highlight the connection between a coherent channel and a nonlocal quantum nondemolition interaction and give ...
Wilde, Mark M. +3 more
openaire +2 more sources
Combined Optical and Electrical Spectrum Shaping for High-Baud-Rate Nyquist-WDM Transceivers
IEEE Photonics Journal, 2016 We discuss the benefits and limitations of optical time-division multiplexing (OTDM) techniques based on the optical generation of a periodic train of sinc pulses for wavelength-division multiplexing (WDM) transmission at high baud rates. It is shown how
Edson P. da Silva +14 more
doaj +1 more source
FPGA-Based Rate-Compatible LDPC Codes for the Next Generation of Optical Transmission Systems
IEEE Photonics Journal, 2016 In this paper, we propose a rate-compatible forward error-correcting (FEC) scheme based on low-density-parity check (LDPC) codes together with its software reconfigurable unified field-programmable gate array (FPGA) architecture.
Ding Zou, Ivan B. Djordjevic
doaj +1 more source
Secure Communication Using Mesoscopic Coherent States [PDF]
Physical Review Letters, 2003 We demonstrate theoretically and experimentally that secure communication using intermediate-energy (mesoscopic) coherent states is possible. Our scheme is different from previous quantum cryptographic schemes in that a short secret key is explicitly used and in which quantum noise hides both the bit and the key. This encryption scheme can be optically
Barbosa, Geraldo A. +3 more
openaire +3 more sources
Review on vortex beams with low spatial coherence
Advances in Physics: X, 2019 Vortex beams with helical phase, carrying phase singularity and orbital angular momentum, have attract great attention in the past decades due to their wide applications in optical communications, optical manipulation, super-resolution imaging and so on.
Xianlong Liu, Jun Zeng, Yangjian Cai
doaj +1 more source
Effective Linewidth of Semiconductor Lasers for Coherent Optical Data Links
Photonics, 2016 We discuss the implications of using monolithically integrated semiconductor lasers in high capacity optical coherent links suitable for metro applications, where the integration capabilities of semiconductor lasers make them an attractive candidate to ...
Miguel Iglesias Olmedo +8 more
doaj +1 more source
Photonics, 2017 The transmission impairments of a Raman amplified link using dual-polarization 16-quadrature amplitude modulation (DP-16QAM) are experimentally characterized.
Xiaodan Pang +6 more
doaj +1 more source
10-Gb/s Long-Reach PON System With Low-Complexity Dispersion-Managed Coherent Receiver
IEEE Photonics Journal, 2015 We demonstrate 10-Gb/s transmission over more than 130 km of G.652 fiber using a simple directly modulated distributed feedback (DFB) laser and a new “chirp-managed” approach based on a low-complexity coherent receiver.
R. Corsini +3 more
doaj +1 more source