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XPM Induced Filter Free Multi-Wavelength Conversion Exploiting Hybrid Multiplexing Employing Sagnac Effect and Circulator in DWDM Networks

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Title XPM Induced Filter Free Multi-Wavelength Conversion Exploiting Hybrid Multiplexing Employing Sagnac Effect and Circulator in DWDM Networks
 
Creator Parashuram
Kumar, Chakresh
 
Subject Group velocity dispersion
Highly nonlinear fiber
Interferometry
Nonlinearity
Semiconductor optical amplifier
 
Description 15-24
In this paper, XPM based filter free wavelength conversion is proposed and demonstrated using Sagnac interferometric
loop, circulator, asymmetric Mach-Zehnder modulators and multiplexers. Two input NRZ signals of different wavelengths
(1551 nm and 1553 nm) each with a data rate of 100 Gb/s are simultaneously converted to a target wavelength of 1555 nm.
In contrast to other interferometry, using a common route where two light beams propagate in opposite directions, the
Sagnac interferometer uses the interference created by superimposing light waves to extract information. Sagnac effect is
exploited to isolate the wavelengths as a frequency selector and to provide phase shift between co- and counter propagating
signals. Proposed system is investigated with or without using the optical band passes filters and compared with the back-toback
(b2b) signal. Simulation results reveals that filter less conversion obtained higher extinction ratio (> 20 dB) for both
1551 nm to 1553 nm and 1553 to 1555 nm conversion using Sagnac effect. Power penalties are found to be less than 0.5 dB
for the conversion of 1551 nm to 1555 nm and less than 0.4 dB for the conversion of 1553 nm to 1555 nm. To the best of
our knowledge, this is a novel technique that provides filter-free wavelength conversion, multicasting, and a reduction in
system complexity without requiring separate phase control. Even at low power, the lack of filters lowers bit error rate and
insertion losses. Filter-free wavelength conversion lowers complexity, increases scalability, and is more stable.
 
Date 2024-01-08T11:52:54Z
2024-01-08T11:52:54Z
2024-01
 
Type Article
 
Identifier 0022-4456 (Print); 0975-1084 (Online)
http://nopr.niscpr.res.in/handle/123456789/63179
https://doi.org/10.56042/jsir.v83i1.4148
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source JSIR Vol.83(01) [January 2024]