All-Optical Contention Resolution in Space and Wavelength Domain with Ultra-Fast Packet Envelope Detection and Integrated Optical Gates

2006 ◽  
Author(s):  
D. Apostolopoulos ◽  
E. Kehayas ◽  
L. Stampoulidis ◽  
P. Bakopoulos ◽  
H. Avramopoulos
Keyword(s):  
Contention Resolution ◽  
Integrated Optical ◽  
Envelope Detection ◽  
All Optical ◽  
Optical Gates

On-the-Fly All-Optical Contention Resolution for NRZ and RZ Data Formats Using Packet Envelope Detection and Integrated Optical Switches

2007 ◽  
Vol 19 (8) ◽  
pp. 538-540 ◽  
Author(s):  
L. Stampoulidis ◽  
E. Kehayas ◽  
D. Apostolopoulos ◽  
P. Bakopoulos ◽  
K. Vyrsokinos ◽  
...  
Keyword(s):  
Optical Switches ◽  
Contention Resolution ◽  
Data Formats ◽  
Integrated Optical ◽  
Envelope Detection ◽  
All Optical

Hybrid buffer‐based optical packet switch with negative acknowledgment for multilevel data centers

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Sumit Chandra ◽  
Shahnaz Fatima ◽  
Raghuraj Singh Suryavanshi
Keyword(s):  
Data Centers ◽  
Web Applications ◽  
Optical Switch ◽  
Contention Resolution ◽  
Multilevel Data ◽  
All Optical ◽  
Optical Buffering ◽  
Different Types ◽  
Packet Switch ◽  
Novel Design

AbstractIn the present scenario, data centers serve many functionalities like storage, transfer of data, supporting web applications, etc. In data centers, various levels of hierarchy different types of switches are required; therefore, multifunctional data centers are desired. This paper discusses a novel design for optical switch which can be placed at various levels of hierarchy. In the proposed design, multifunctionality contention resolution schemes which consider electronic and optical buffering and all-optical negative acknowledgment (AO-NACK) are considered. In buffering technologies, contending packets are stored in either in electronic RAM or in fiber delay lines. In case of the AO-NACK scheme, contending packets are blocked, and a negative acknowledgment is sent back to the transmitting node and blocked packets are retransmitted. For various considered schemes, Monte Carlo simulation have been performed, results in terms of packet loss probability are presented, and it has been found that the performance of optical buffering is much superior to electronic buffering and AO-NACK schemes. It is found that, in the AO-NACK scheme, the numbers of retransmitted packets due to contention blocking are 33,304 which can be reduced to 7, by using a small amount of buffer at each node.

scholarly journals Comparative study of all-optical INVERTER and BUFFER gates using MZI structure

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Pallavi Singh ◽  
Ashutosh Kumar Singh ◽  
Vanya Arun ◽  
Devendra K Tripathi
Keyword(s):  
Extinction Ratio ◽  
Low Complexity ◽  
Optical Amplifier ◽  
Destructive Interference ◽  
Eye Diagram ◽  
Pump And Probe ◽  
All Optical ◽  
High Scalability ◽  
Comparative Results ◽  
Optical Gates

AbstractIn the paper, one input optical gates i.e., INVERTER and BUFFER have been designed using some basic assumption to analyze with the help of Semi-conductor Optical Amplifier based Mach–Zehnder Interferometer structure. The results are optimized by iterative process. The proposed design of optical gates presents low complexity, high scalability and more feasible to evaluate through digital Boolean analyzation. The digital Boolean analyzation is analyzed by some basic Boolean rules and assumptions which makes the design more digital so that it can be compatible for more than one input optical gates also. Optical Gate is designed to get constructive and destructive interference for pump and probe as they are injected into SOA simultaneously. The phase modulation is converted into intensity modulation which gives a Boolean result. The paper is optimized by Eye diagram, Q factor, wavelength spectrum and frequency chirp for both the gates. The comparative results of extinction ratio for both the gates have also been discussed. The design is supported by theoretical analysis, simulation tool (Optsim) and Boolean explanation. The proposed designs are constructed with same pattern which supports the same Boolean analysis.

All-Optical Payload Envelope Detection for Packets with 40 Gbps Payloads and 10 Gbps Labels

2006 ◽  
Author(s):  
Brian R. Koch ◽  
Zhaoyang Hu ◽  
John E. Bowers ◽  
Daniel J. Blumenthal
Keyword(s):  
Envelope Detection ◽  
All Optical

Low-power broadband all-optical switching via intermodal cross-phase modulation in integrated optical waveguides

2018 ◽  
Vol 43 (8) ◽  
pp. 1631 ◽  
Author(s):  
Niklas M. Lüpken ◽  
Tim Hellwig ◽  
Martin Schnack ◽  
Jörn P. Epping ◽  
Klaus-J. Boller ◽  
...  
Keyword(s):  
Low Power ◽  
Phase Modulation ◽  
Optical Waveguides ◽  
Optical Switching ◽  
Cross Phase Modulation ◽  
Integrated Optical ◽  
All Optical ◽  
All Optical Switching ◽  
Integrated Optical Waveguides
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