scholarly journals Cylindrical vector beam multiplexer/demultiplexer using off-axis polarization control

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Shuqing Chen ◽  
Zhiqiang Xie ◽  
Huapeng Ye ◽  
Xinrou Wang ◽  
Zhenghao Guo ◽  
...  
Keyword(s):  
Wavelength Division Multiplexing ◽  
Transmission Rate ◽  
High Capacity ◽  
Wavelength Division ◽  
Polarization Control ◽  
Vector Beam ◽  
Vector Mode ◽  
Control Technologies ◽  
Polarization Division Multiplexing ◽  
Cylindrical Vector Beam

AbstractThe emergence of cylindrical vector beam (CVB) multiplexing has opened new avenues for high-capacity optical communication. Although several configurations have been developed to couple/separate CVBs, the CVB multiplexer/demultiplexer remains elusive due to lack of effective off-axis polarization control technologies. Here we report a straightforward approach to realize off-axis polarization control for CVB multiplexing/demultiplexing based on a metal–dielectric–metal metasurface. We show that the left- and right-handed circularly polarized (LHCP/RHCP) components of CVBs are independently modulated via spin-to-orbit interactions by the properly designed metasurface, and then simultaneously multiplexed and demultiplexed due to the reversibility of light path and the conservation of vector mode. We also show that the proposed multiplexers/demultiplexers are broadband (from 1310 to 1625 nm) and compatible with wavelength-division-multiplexing. As a proof of concept, we successfully demonstrate a four-channel CVB multiplexing communication, combining wavelength-division-multiplexing and polarization-division-multiplexing with a transmission rate of 1.56 Tbit/s and a bit-error-rate of 10−6 at the receive power of −21.6 dBm. This study paves the way for CVB multiplexing/demultiplexing and may benefit high-capacity CVB communication.

Hybrid 10-Gb/s, 2.5-Gb/s, 64-QAM, and AM-VSB high-capacity wavelength-division-multiplexing transport systems using SMF and LEAF fibers

2002 ◽  
Vol 14 (2) ◽  
pp. 230-232 ◽  
Author(s):  
Chien-Chung Lee ◽  
Yung-Kuang Chen ◽  
Chia-Hsiung Chang ◽  
Kai-Ming Feng ◽  
Sohn-Ling Tzeng ◽  
...  
Keyword(s):  
Wavelength Division Multiplexing ◽  
High Capacity ◽  
Transport Systems ◽  
Wavelength Division

A Three-Channels WDN Based on Multimode Interference Photonic Crystal

2012 ◽  
Vol 571 ◽  
pp. 445-449
Author(s):  
Jia Han Yan
Keyword(s):  
Photonic Crystal ◽  
Integrated Circuits ◽  
Wavelength Division Multiplexing ◽  
Transmission Rate ◽  
Multimode Interference ◽  
Practical Applications ◽  
Wavelength Division ◽  
Guided Mode ◽  
Multiple Wavelength ◽  
Waveguide System

A photonic crystal waveguide coupled structure can be constructed by putting three photonic crystal waveguides in parallel and adjacent form. Study the coupling of the approximate solution interference acts and the self-image phenomenon of this multi-mode waveguide system based on the guided mode propagation analysis method, a three-channels multimode interference wavelength division multiplexing is designed. The presented device not only has a high transmission rate, but also has the advantages of multiple wavelength selection and may have potential and practical applications in the field of photonic integrated circuits in future.

High-Speed 120 Gbps AMI-WDM-PDM Free Space Optical Transmission System

2019 ◽  
Vol 40 (4) ◽  
pp. 429-433 ◽  
Author(s):  
Kamal Kishore Upadhyay ◽  
Saumya Srivastava ◽  
N. K Shukla ◽  
Sushank Chaudhary
Keyword(s):  
Wavelength Division Multiplexing ◽  
Free Space ◽  
Communication Systems ◽  
High Speed ◽  
Signal To Noise Ratio ◽  
Low Cost ◽  
Free Space Optical ◽  
Wavelength Division ◽  
Received Power ◽  
Polarization Division Multiplexing

Abstract Free space optical (FSO) communication systems are gaining high popularity from the last decade due to its various advantages such as no license spectrum, low-cost implementation etc. In this work, 160 Gbps data is transmitted over 8 km FSO link by adopting alternate mark inversion (AMI), wavelength division multiplexing (WDM) and polarization division multiplexing (PDM) schemes. The results are reported in terms of Q factor, bit error rate, signal to noise ratio, total received power and eye diagrams.

DWDM of Optical Micro Ring Resonator Double Add/Drop Multiplexing for THz Optical Communication

2013 ◽  
Vol 770 ◽  
pp. 390-393 ◽  
Author(s):  
N. Pornsuwancharoen ◽  
M. Tasakorn ◽  
S. Jurajaturasiraratn
Keyword(s):  
Wavelength Division Multiplexing ◽  
Optical Communication ◽  
High Capacity ◽  
Microring Resonator ◽  
Wavelength Division ◽  
Network Applications ◽  
Wide Range ◽  
Gaussian Input ◽  
The Common ◽  
Very High

A system that can be used to generate the new optical communication bandwidths using a Gaussian pulse propagating within a nonlinear microring resonator double add/drop multiplexing system is discussed. By using the wide range of the Gaussian input pulses, for instance, when the input pulses of the common lasers with center wavelength of 1,500 nm are used. Results obtained shows that more available wavelength bands from the optical communication band can be generated, which can be used to form new dense wavelength division multiplexing bands, whereas the use of the very high capacity more than 200 channels for personal wavelength and network applications is plausible.

Analysis of 64 channels based IS-OWC system using different intereference reduction techniques

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Suraj Mahajan ◽  
Preeti Gupta ◽  
Vijay Kumar
Keyword(s):  
Wavelength Division Multiplexing ◽  
High Speed ◽  
High Capacity ◽  
Optical Wireless ◽  
Differential Phase Shift ◽  
Wavelength Division ◽  
Reduction Techniques ◽  
Data Rates ◽  
Shift Keying ◽  
Great Consideration

AbstractOptical wireless communication in space is attracting great consideration due to high speed, high capacity, no EMI, high security, and wide bandwidth. OWC has edge over microwave communication because in laser based communication, relay feature saves the time of the system. In this paper, different interference reduction techniques in wavelength division multiplexing based inter-satellite optical wireless system are presented at different data rates 10, 20, and 40 Gbps. Hybrid multiplexing using wide division multiplexing and time division multiplexing is proposed first and second technique proposed is polarization interleaving in IsOWC systems. Dense channel spacing system with diverse modulations is investigated further such as Chirped, differential phase shift keying, and alternate mark inversion (AMI). Q factor is the performance evaluation parameters for different distances.

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