scholarly journals A Deeply Saturated Differentially-Biased SOA-MZI for 20 Gb/s Burst-Mode NRZ Traffic

2019 ◽  
Vol 9 (15) ◽  
pp. 2971
Author(s):  
Apostolos Tsakyridis ◽  
Miltiadis Moralis-Pegios ◽  
Christos Vagionas ◽  
Eugenio Ruggeri ◽  
George Kalfas ◽  
...  
Keyword(s):  
Optical Networks ◽  
Peak Power ◽  
Wavelength Conversion ◽  
State Of The Art ◽  
Optical Amplifier ◽  
Wavelength Converter ◽  
Active Components ◽  
Transmission Experiment ◽  
Burst Mode ◽  
Power Equalization

We experimentally demonstrate an optical Burst-Mode Wavelength Converter (BMWC) that simultaneously provides power equalization and wavelength conversion of Non-Return to Zero-On/Off Keying (NRZ-OOK) data and operates up to 20 Gb/s. It employs a balanced, differentially-biased, Semiconductor Optical Amplifier-Mach Zehnder Interferometer (SOA-MZI) operating in deeply saturated regime and its performance is evaluated at 10 Gb/s and 20 Gb/s with loud/soft peak–power ratios up to 9 dB and 5 dB, respectively. Bit Error Rate (BER) measurements reveal error free operation with up to 6.1 dB BER improvement at 10 Gb/s and 3.51 dB at 20 Gb/s, while the use of a single SOA-MZI yields 50% reduction in the number of active components against state-of-the-art BMWCs. Finally, the proposed BMWC is evaluated in non-dispersion compensated 25 km fiber transmission experiment, providing error-free operation with 1.43 dB BER improvement, validating its capabilities for potential employment in Passive Optical Networks (PON) and 5G fronthaul networks.

Switch Architecture with Wavelength Conversion in Optical Networks

2011 ◽  
Vol 474-476 ◽  
pp. 1479-1482
Author(s):  
Ning Zhang
Keyword(s):  
Optical Networks ◽  
Wavelength Division Multiplexing ◽  
Wavelength Conversion ◽  
Optical Network ◽  
Full Potential ◽  
Wdm Optical Networks ◽  
Wavelength Converter ◽  
Wavelength Division ◽  
Wavelength Reuse ◽  
Network Flexibility

In this paper, we analyze the optical network with wavelength conversion, and discuss the architecture of network with wavelength converter in its node. The optical cross connects technology for wavelength division multiplexing (WDM) is rapidly developing. Wavelength conversion is one of the key techniques for switch WDM optical networks. The wavelength conversion technology can achieve wavelength reuse, decrease wavelength competition, enhance network flexibility and scalability, and simplify network structure and management. The results show that If these cross-connectors feature integrated with wavelength conversion, network will be better able to play the full potential of WDM optical networks.

scholarly journals Semiconductor Optical Amplifier-Based Wavelength Conversion of Nyquist-16QAM for Flex-Grid Optical Networks

2016 ◽  
Vol 34 (11) ◽  
pp. 2724-2729 ◽  
Author(s):  
Benoit Filion ◽  
Lin Jiachuan ◽  
An T Nguyen ◽  
Xiaoguang Zhang ◽  
Sophie LaRochelle ◽  
...  
Keyword(s):  
Optical Networks ◽  
Semiconductor Optical Amplifier ◽  
Wavelength Conversion ◽  
Optical Amplifier

scholarly journals Optimization of system’s parameters for wavelength conversion of E-band signals

2022 ◽  
Vol 12 (2) ◽  
pp. 1659
Author(s):  
Yazan Alkhlefat ◽  
Sevia Mahdaliza Idrus Sutan Nameh ◽  
Farabi M. Iqbal
Keyword(s):  
Communication Systems ◽  
Orthogonal Frequency Division Multiplexing ◽  
High Speed ◽  
Wavelength Conversion ◽  
Signal To Noise Ratio ◽  
Optical Amplifier ◽  
Optical Signal ◽  
Error Vector Magnitude ◽  
Wavelength Converter ◽  
High Data

Current and future wireless communication systems are designed to achieve the user’s demands such as high data rate and high speed with low latency and simultaneously to save bandwidth and spectrum. In 5G and 6G networks, a high speed of transmitting and switching is required for internet of things (IoT) applications with higher capacity. To achieve these requirements a semiconductor optical amplifier (SOA) is considered as a wavelength converter to transmit a signal with an orthogonal frequency division multiplexing with subcarrier power modulation (OFDM-SPM). It exploits the subcarrier’s power in conventional OFDM block in order to send additional bits beside the normally transmitted bits. In this paper, we optimized the SOA’s parameters to have efficient wavelength conversion process. These parameters are included the injection current (IC) of SOA, power of pump and probe signals. A 7 Gbps OFDM-SPM signal with a millimeter waves (MMW) carrier of 80 GHz is considered for signal switching. The simulation results investigated and analyzed the performance of the designed system in terms of error vector magnitude (EVM), bit error rate (BER) and optical signal-to-noise ratio (OSNR). The optimum value of IC is 0.6 A while probe power is 9.45 and 8.9 dBm for pump power. The simulation is executed by virtual photonic integrated (VPI) software.

scholarly journals Optical Channel Capacity Upgrade Based on Multiwavelength Conversion XGM Using Semiconductor Optical Amplifier for Access Networks

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Mohammad Syuhaimi Ab-rahman ◽  
Abdul Hameed Almabrok Swedan
Keyword(s):  
Pump Power ◽  
Wavelength Conversion ◽  
Power Level ◽  
Optical Amplifier ◽  
Access Networks ◽  
Optical Channel ◽  
Wavelength Converter ◽  
Acceptable Result ◽  
Channel Response ◽  
Point To Point

This paper demonstrates a 10 Gb/s one-to-two-wavelength conversion configuration based on cross-gain modulation for optical access networks using a single TW-SOA. The method is capable of converting a signal data of specific wavelength 1541 nm to certain wavelengths of CW’s laser 1554 nm and 1558 nm with 4 nm spacing. The pump power level was classified due to channel response. A result obtained was the best power level offering wavelength converter between −6 and 3 dBm. The conversion efficiency achievement provided an acceptable result for probe signals. The findings ofQ-factor performance were investigated. TheQvalues were found to be more than 9 for point to point transmission and 20 km fiber configurations for the original and converted signal. The technique implemented at 20 km and the power of all channels were adequate to provide a splitting ratio of 1/64 for the launched pump power 3 dBm.

scholarly journals Design and Simulation of Physical Layer Security for Next Generation Intelligent Optical Networks

2021 ◽  
Author(s):  
valarmathi marudhai ◽  
Shanthi Prince ◽  
Shayna Kumari
Keyword(s):  
Optical Networks ◽  
Shot Noise ◽  
Transmission Loss ◽  
Optical Network ◽  
Binary Sequence ◽  
Optical Amplifier ◽  
Next Generation ◽  
Wavelength Converter ◽  
Link Length ◽  
Intelligent Optical Networks

Abstract With the latest technological advancements and attractive features of next generation intelligent optical networks such as high bandwidth, low power consumption, and low transmission loss, etc., they have been considered as most viable solution to satisfy promptly growing bandwidth demands. However, main optical network components bring forth a set of security challenges and reliability issues, accompanied by new vulnerabilities within the network. This paper proposes a new design for an optical encryption and decryption method for enhancing optical network security using p-i-n photodiode which generates Pseudo Random Binary Sequence (PRBS) as a shot noise fluctuations and wavelength converter based design using Semiconductor Optical Amplifier (SOA) based XOR gate which utilizes Cross-Phase Modulation (XPM). The system performance based on Bit Error Rate (BER) and Q factor are analyzed at different data rates for different link lengths up to 100 km using OptiSystem. It is observed that error free transmission with a BER of 10-12 is achieved a data rate of 10Gbps for a link length of only 30 Km for the system with PIN photodiode’s shot noise being used for PRBS sequence generation. However, wavelength conversion based system enables transmission of signal at 10Gbps signal up to a link length of 90Km.

scholarly journals Sub-Tree-Based Approach for Reconfiguration of Light-Tree Pair without Flow Interruption in Sparse Wavelength Converter Network

Information ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 211
Author(s):  
Amanvon Ferdinand Atta ◽  
Joël Christian Adépo ◽  
Bernard Cousin ◽  
Souleymane Oumtanaga
Keyword(s):  
Optical Flow ◽  
Optical Networks ◽  
Network Performance ◽  
Wavelength Conversion ◽  
Performance Study ◽  
Wavelength Converter ◽  
Network Nodes ◽  
Flow Interruption ◽  
Tree Pair ◽  
Flow Transfer

Network reconfiguration is an important mechanism for network operators to optimize network performance and optical flow transfer. It concerns unicast and multicast connections. Multicast connections are required to meet the bandwidth requirements of multicast applications, such as Internet Protocol-based TeleVision (IPTV), distance learning, and telemedicine. In optical networks, a multicast connection is made possible by the creation of an optical tree-shaped path called a light-tree. The problem of light-tree pair reconfiguration is addressed in this study. Given an initial light-tree used to transfer an optical flow and a final light-tree that is computed by the network operator to optimize network performance, the goal is to migrate the optical flow from the initial light-tree to the final light-tree without flow interruption. Flow interruption is not desirable for network operators because it forces them to pay financial penalties to their customers. To solve this problem, existing methods use a branch approach that is inefficient if some network nodes do not have wavelength conversion capability. Therefore, we proposed in this study a sub-tree-based method. This approach selects and configures sub-tree pairs from the light-tree pair (initial light-tree, final light-tree) to be reconfigured. Then, we produce a sequence of configurations. The performance study confirms that our method is efficient in solving the problem of light-tree pair reconfiguration because our method does not cause flow interruption.

scholarly journals Broad-Range tunable optical wavelength converter for next generation optical superchannels

DYNA ◽  
2015 ◽  
Vol 82 (194) ◽  
pp. 72-78
Author(s):  
Andrés Felipe Betancur Pérez ◽  
Ana María Cárdenas Soto ◽  
Neil Guerrero González
Keyword(s):  
Optical Networks ◽  
Wavelength Conversion ◽  
Wavelength Converter ◽  
Channel Spacing ◽  
Optical Wavelength ◽  
All Optical ◽  
Signal Demodulation ◽  
Optical Wavelength Converter ◽  
Optical Wavelength Conversion ◽  
Conversion Scheme

A broad-range tunable all optical wavelength conversion scheme that is based on a dual driven Mach-Zehnder modulator with an integrated microwave generator to tune the channel spacing along the entire C band, is proposed. Successful signal demodulation up to 8 wavelength conversions, in steps of 50-400 GHz of 100 Gbps Nyquist QPSK channels with configurable channel spacing is reported. The proposed wavelength conversion scheme enables flexible wavelength routing on gridless optical networks, as can be seen in the Superchannels with a BER lower than 10<sup>-13</sup>.

scholarly journals Disaster Resilience of Optical Networks: State of the Art, Challenges, and Opportunities

2021 ◽  
pp. 100619
Author(s):  
Jacek Rak ◽  
Rita Girão-Silva ◽  
Teresa Gomes ◽  
Georgios Ellinas ◽  
Burak Kantarci ◽  
...  
Keyword(s):  
Optical Networks ◽  
State Of The Art ◽  
Disaster Resilience ◽  
Challenges And Opportunities
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