Performance analysis of the all‐optical XOR gate using SOA‐MZI with a differential modulation scheme

Abstract

ABSTRACT:In this paper, the all-optical exclusive OR gate using an integrated SOA-based Mach-Zehnder interferometer with a differential modulation scheme is proved to exceed the operation speed limit effectively through numerical analysis for the first time. The control-signal pulse parameters and delay time are discussed and designed to optimize the performance of the XOR gate.

All-optical NAND gate using integrated SOA-based Mach–Zehnder interferometer

“…The maximum operation bit rate of the NAND gate is confined by the gain recovering time of SOA because the long gain recovery time limits the width of the switching window [18]. With differential modulation scheme, the operation speed of an SOA-MZI-based XOR can rise to 40 Gb/s or above, which has been demonstrated in [7,19], while the benefits of using differential scheme here need to be further investigated. Figure 5 accounts for the NAND output at different asynchronous time ( t) between input data at ports 3 and 4, in which Figs.…”

“…In transmission, the optical label has to be examined at each node to retrieve the destination information, which is essential for making routing decision [1]. The all-optical high-speed logic gates, which are important for all-optical signal processing such as pattern matching, pseudorandom number generation, and parity checking, may be classified into two categories generally depending on the methodology used to achieve the nonlinear operation of the logic devices, i.e., the fiber nonlinearitybased logic gates [2][3][4][5] and the semiconductor-optical-amplifier (SOA)-based logic gates [6][7][8][9], in which the logic gates employing integrated SOA-based Mach-Zehnder interferometer (MZI) are attractive for simple structure, stable and efficient operation, cascading capability, and easy implementation compared with fiber-based devices [7].…”

All-optical Data Extraction Based on Optical Logic Gates

“…In this paper, the suggested optical system based on SOAs shows the potential for high speed, and highly integrable and low power optical data computing. [4][5][6][7][8][9] . 지는 실제 시스템에 적용 가능한 기술들의 충분한 확보가 미 흡한 실정이다 [10][11][12][13] .…”