Results 51 to 60 of about 5,337,605 (357)

Coherent Radio-Over-Fiber and Millimeter-Wave Radio Seamless Transmission System for Resilient Access Networks

IEEE Photonics Journal, 2012
We propose a millimeter-wave (MMW) coherent radio-over-fiber (RoF) transmission system for application to an access network with a direct broadband last-mile wireless connection to an optical fiber network.
A. Kanno, P. T. Dat, T. Kuri, I. Hosako, T. Kawanishi, Y. Yoshida, Y. Yasumura, K. Kitayama   +7 more
doaj   +1 more source

DP-QPSK Coherent Detection Using 2D Grating Coupled Silicon Based Receiver

IEEE Photonics Journal, 2021
We propose and demonstrate a 100 Gbit/s silicon photonic (SiPh) coherent receiver (Rx) with advanced digital signal processing (DSP) for dual-polarization quadrature-phase-shift-keying (DP-QPSK) transmission.
Ching-Wei Peng, Chi-Wai Chow, Pin-Cheng Kuo, Guan-Hong Chen, Chien-Hung Yeh, Jyehong Chen, Yinchieh Lai   +6 more
doaj   +1 more source

4×112 Gb/s/λ MCF Transmission Using Field PDM-PAM4 and Coherent Detection for Datacenter Applications

IEEE Photonics Journal, 2022
The inter-data center links are meeting the challenge of increasing transmission capacity continuously. Here, the tradeoff between transmission capacity and cost and power consumption especially needs to be considered.
Yuyuan Gao, Wenpeng Gao, Ming Luo, Haibo Li, Jiahao Huo, Dongxu Lu, Xian Zhou   +6 more
doaj   +1 more source

Coherent Detection of Terahertz Radiation with Graphene

ACS Photonics, 2019
Despite that significant efforts have been made in the development of time-integrated graphene-based detectors operating in vis/IR/THz ranges, little is known about coherent detection of THz pulses...
P. Obraztsov, P. Chizhov, T. Kaplas, V. Bukin, M. Silvennoinen, C. Hsieh, K. Konishi, N. Nemoto, M. Kuwata-Gonokami   +8 more
semanticscholar   +1 more source

Coherent detection of ultraweak electromagnetic fields [PDF]

Physical Review D, 2017
We explore the application of heterodyne interferometry for a weak-field coherent detection scheme. The methods detailed here will be used in ALPS II, an experiment designed to search for weakly-interacting, sub-eV particles.
Zachary R. Bush, S. Barke, H. Hollis, A. Spector, A. Hallal, G. Messineo, D. Tanner, G. Mueller   +7 more
semanticscholar   +1 more source

Coherent scatterers detection in glacier environments by means of TerraSAR-X images

, 2010
This paper investigates the detection of Coherent Scatterers (CSs) in Ice and Glacier terrain by means of Ter-raSAR-X images in the test case of the Helheim Glacier in Greenland.
Papathanassiou, Konstantinos P., Hajnsek, Irena, Sanjuan-Ferrer, Maria J.   +2 more
core   +1 more source

Joint Implementation Method for Clutter Suppression and Coherent Maneuvering Target Detection Based on Sub-Aperture Processing with Airborne Bistatic Radar

Remote Sensing
An airborne bistatic radar working in downward-looking mode confronts two major challenges for low-altitude target detection. One is range cell migration (RCM) and Doppler migration (DM) resulting from the relative motion of the radar and target.
Zhi Sun, Xingtao Jiang, Haonan Zhang, Jiangyun Deng, Zihao Xiao, Chen Cheng, Xiaolong Li, Guolong Cui   +7 more
doaj   +1 more source

High-Sensitivity Gas Detection with Air-Lasing-Assisted Coherent Raman Spectroscopy

Ultrafast Science, 2022
Remote or standoff detection of greenhouse gases, air pollutants, and biological agents with innovative ultrafast laser technology attracts growing interests in recent years.
Zhihao Zhang, Fangbo Zhang, Bo Xu, Hongqiang Xie, B. Fu, Xu Lu, Ning Zhang, Shupeng Yu, Jinping Yao, Ya Cheng, Zhi‐zhan Xu   +10 more
semanticscholar   +1 more source

High sensitivity optical coherence detector optimization

, 2001
An optimal optical filtering scheme for an optical coherence detection system gives very high detection sensitivities (-30dB) for a partially coherent source.
Coutinho, R.C., French, H.A., Selviah, D.R., H.D. Griffiths, R.C. Coutinho, H.A. French, Griffiths, H.D., D.R. Selviah   +7 more
core   +1 more source

Four-in-one interferometer for coherent and self-coherent detection

Optics Express, 2013
A compact micro-optical interferometer is presented that combines two optical 90° hybrids or, alternatively, four delay interferometers into one interferometer structure sharing one tunable delay line. The interferometer can function as a frontend of either a coherent receiver or of a self-coherent receiver by adjusting the waveplates and the delay ...
Li, J., Billah, M. R., Schindler, P. C., Lauermann, M., Schuele, S., Hengsbach, S., Hollenbach, U., Mohr, J., Koos, C., Freude, W., Leuthold, J.   +10 more
openaire   +4 more sources