scholarly journals All-optical half adder using an SOA and a PPLN waveguide for signal processing in optical networks

2006 ◽  
Vol 14 (22) ◽  
pp. 10255 ◽  
Author(s):  
Saurabh Kumar ◽  
Alan E. Willner ◽  
Deniz Gurkan ◽  
Krishnan R. Parameswaran ◽  
Martin M. Fejer
Keyword(s):  
Signal Processing ◽  
Optical Networks ◽  
Half Adder ◽  
All Optical

scholarly journals Design of Electro-optic Mach-zehnder Interferometer Based All-optical Binary Half Adder and Half Subtractor

2021 ◽  
Author(s):  
sehajpal kaur ◽  
Maninder Lal Singh ◽  
Priyanka . ◽  
Mandeep Singh
Keyword(s):  
Signal Processing ◽  
High Speed ◽  
Optical Switching ◽  
Optical Signal ◽  
Zehnder Interferometer ◽  
Switching Network ◽  
Electro Optic ◽  
Half Adder ◽  
All Optical ◽  
Mach Zehnder Interferometer

Abstract By exploiting the phenomena of optical switching, different logic functions for all-optical digital signal processing has been projected. This paper presents the application of optical switching to design of all-optical half adder and half subtractor by Mach-Zehnder interferometer. All-Optical half adder and half subtractor are designed with the optimized structure of 2 × 2 Mach-Zehnder interferometer switch by electro-optic effect in lithium niobate. Numerical simulations of the proposed structure have been conducted to verify the suitability of the designed structure using Opti-BPM software. The implementation of proposed structures is simulated in MATLAB software along with the mathematical description. It is interesting to analyze that the proposed structures are useful to generate combinational and sequential logic circuits in high-speed optical signal processing and switching network.

All-optical signal processing technologies in flexible optical networks

2019 ◽  
Vol 38 (1) ◽  
pp. 14-36 ◽  
Author(s):  
Yuefeng Ji ◽  
Hongxiang Wang ◽  
Jiabin Cui ◽  
Meitong Yu ◽  
Zhitian Yang ◽  
...  
Keyword(s):  
Signal Processing ◽  
Optical Networks ◽  
Optical Signal Processing ◽  
Optical Signal ◽  
Processing Technologies ◽  
All Optical

All-Optical Half Adder Based on a 2x2 Multimode Interference Coupler

2018 ◽  
Vol 4 (1) ◽  
pp. 9
Author(s):  
Dao Duy Tu ◽  
Linh Duc Tam Ho ◽  
Dung Truong Cao ◽  
Hung Tan Nguyen
Keyword(s):  
Optical Networks ◽  
Logic Gate ◽  
Extinction Ratio ◽  
Optical Signal ◽  
Multimode Interference ◽  
Optical Logic ◽  
Index Method ◽  
Half Adder ◽  
All Optical ◽  
Multimode Interference Coupler

In this paper, an all-optical logic gate based on 2x2 (MMI) multimode interference coupler is theoretically designed and simulated using three-dimensional beam propagation method (3D-BPM) and effective index method (EIM) to analyze and evaluate the performance of the device. The proposed device is used to convert phase information of input optical signals to amplitude at the output ports of MMI. With this mechanism, the device can operates as a logical half adder. Simulation results show that the optical half adder archives with insertion loss and extinction ratio from ON to OFF logic–level below 0.7 dB and over 40 dB, respectively. Furthermore, wide bandwidth of 100nm is also an advantage of this devices. Therefore, it can be applied to all optical signal processing in next generation optical networks as well as in photonics integrated circuits.

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