All-Optical Incrementer/Decrementer with the Help of Semiconductor Optical Amplifier-Assisted Sagnac Switch
28 May 2010-International Journal of Optomechatronics (Taylor & Francis Group)-Vol. 4, Iss: 2, pp 177-194
TL;DR: In this paper, an all-optical adder based incrementer/decrementer circuit is proposed and described with the help of Semiconductor Optical Amplifier (SOA)-assisted Sagnac switch.
Abstract: In this article, an all-optical adder based incrementer/decrementer circuit is proposed and described with the help of Semiconductor Optical Amplifier (SOA)-assisted Sagnac switch. The proposed design is more efficient in terms of speed and hardware complexity. The article describes the incrementer/decrementers using a set of optical half adder and full adder. The principle and possibilities of all-optical incrementer/decrementers is explained. A theoretical model is presented and verified through numerical simulation. The new method promises both higher processing speed and accuracy. The model can be extended for studying more complex all-optical circuit of enhanced functionality in which incrementer/decrementers is the basic building block.
Citations
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TL;DR: The proposed circuit can perform any of the four digital logic operations (NOT, NOR, XOR, AND) by using the appropriate optical pump signal at the selection port of the multiplexer.
48 citations
TL;DR: This review describes the advances in the field of All-Optical logic design methods based on interferometric architectures such as Mach–Zehnder Interferometer (MZI), Sagnac Interferometers and Ultrafast Non-Linear Interferometric (UNI) in a categorized manner.
Abstract: All-Optical Signal Processing is an emerging technology which can avoid costly Optical–electronic–optical (O–E–O) conversions which are usually compulsory in traditional Electronic Signal Processing systems, thus greatly enhancing operating bit rate with some added advantages such as electro-magnetic interference immunity and low power consumption etc. In order to implement complex signal processing tasks All-Optical logic gates are required as backbone elements. This review describes the advances in the field of All-Optical logic design methods based on interferometric architectures such as Mach–Zehnder Interferometer (MZI), Sagnac Interferometers and Ultrafast Non-Linear Interferometer (UNI). All-Optical logic implementations for realization of arithmetic and signal processing applications based on each interferometric arrangement are also presented in a categorized manner.
26 citations
31 Mar 2014
TL;DR: In this paper, a demonstration of All-Optical Half-Adder and Half-Subtracter is done operating at 1 Gbps bit rate using Continuous Wave (CW) Lasers as carrier sources and two Semiconductor Optical Amplifiers (SOA) as basic active elements.
Abstract: In order to overcome the bit-rate limitations caused by Electronic Signal Processing, All-Optical Signal Processing is required. All-Optical Half-Adder and Half-Subtracter can serve as building blocks for All-Optical Arithmetic Logic Unit (ALU). In this paper, a demonstration of All-Optical Half-Adder and Half-Subtracter is done operating at 1 Gbps bit rate using Continuous Wave (CW) Lasers as carrier sources and two Semiconductor Optical Amplifiers (SOA) as basic active elements. One of the arithmetic functions realized by this scheme i.e. Borrow Signal (A ¯ B) exhibited Max Q-factor of 21.2046 to achieve error free operation at bit rate of 1Gbps.
9 citations
Additional excerpts
...element [2–5, 7–29]....
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TL;DR: A parallel system model to recover data and address based on terahertz optical asymmetric demultiplexer (TOAD)/semiconductor optical amplifier (SOA)-assisted Sagnac gate and the variation of contrast ratio, amplitude modulation, extinction ratio and bit error rate has been thoroughly investigated.
2 citations
References
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TL;DR: In this article, an optical nonlinear element asymmetrically placed in a short fiber loop is used for demultiplexing Tb/s pulse trains that requires less than 1 pJ of switching energy and can be integrated on a chip.
Abstract: A device capable of demultiplexing Tb/s pulse trains that requires less than 1 pJ of switching energy and can be integrated on a chip is presented. The device consists of an optical nonlinear element asymmetrically placed in a short fiber loop. Its switching time is determined by the off-center position of the nonlinear element within the loop, and therefore it can use the strong, slow optical nonlinearities found in semiconductors, which all other fast demultiplexers seek to avoid. The switch's operation at 50 Gb/s is demonstrated, using 600-fJ control pulses. >
676 citations
"All-Optical Incrementer/Decrementer..." refers background in this paper
...Various architectures, algorithms, logical, and arithmetic operations have been proposed in the field of optical/optoelectronic computing and parallel signal processing in last few decades (Agrwal, 2001 ; Guoqiang et al, 1999 ; Sokoloff et al, 1993 ; Zoiros et al, 2004 )....
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TL;DR: In this paper, the progress from simple gates using cross-gain modulation and four-wave mixing to the integrated interferometric gates using a cross-phase modulation is reviewed, which is very efficient for high-speed signal processing and open up interesting new areas, such as all-optical regeneration and high-time logic functions.
Abstract: Semiconductor optical amplifiers are useful building blocks for all-optical gates as wavelength converters and OTDM demultiplexers. The paper reviews the progress from simple gates using cross-gain modulation and four-wave mixing to the integrated interferometric gates using cross-phase modulation. These gates are very efficient for high-speed signal processing and open up interesting new areas, such as all-optical regeneration and high-speed all-optical logic functions.
520 citations
"All-Optical Incrementer/Decrementer..." refers background in this paper
...TOAD is characterized by the attractive features of fast switching time, high repetition rate, low power consumption, low latency, noise and jitter tolerance, compactness, thermal stability, and high nonlinear properties, which enable their efficient exploitation in a real ultra-high speed optical communications environment (Stubkjaer, 2000 )....
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TL;DR: In this article, the authors present detailed investigations on a device, which utilizes a semiconductor laser amplifier in a loop mirror configuration (SLALOM), and different modes of operation are reported like nonlinear single pulse switching and two-pulse switching at different operation speeds (1-100 Gb/s).
Abstract: The processing of optical signals in the optical domain is an important issue resulting from the desire to take advantage of the full bandwidth of the optical fiber. In this paper, we present detailed investigations on a device, which utilizes a semiconductor laser amplifier in a loop mirror configuration (SLALOM). Different modes of operation are reported like nonlinear single pulse switching and two-pulse switching at different operation speeds (1-100 Gb/s). Furthermore, a number of applications of the SLALOM in photonic systems, like pulse shaping, decoding, retiming and time-division demultiplexing, are presented. In addition, the SLALOM can be used for an estimate of the linewidth enhancement factor /spl alpha/ and the carrier lifetime /spl tau//sub e/ in an SLA. >
355 citations
"All-Optical Incrementer/Decrementer..." refers background in this paper
...The output power at port-1 and port-2 can be expressed as (Eiselt et al, 1995 ; Huang et al, 2006 ), where G cw ( t ), G ccw ( t ) are the power gain exhibited by the clockwise (CW) and counter clockwise (CCW) pulses, respectively....
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TL;DR: A TOAD-based tree architecture is proposed, a new and alternative scheme, for integrated all-optical logic and arithmetic operations in the optical interconnecting network.
Abstract: Interferometric devices have drawn a great interest in all-optical signal processing for their high-speed photonic activity. The nonlinear optical loop mirror provides a major support to optical switching based all-optical logic and algebraic operations. The gate based on the terahertz optical asymmetric demultiplexer (TOAD) has added new momentum in this field. Optical tree architecture (OTA) plays a significant role in the optical interconnecting network. We have tried to exploit the advantages of both OTA- and TOAD-based switches. We have proposed a TOAD-based tree architecture, a new and alternative scheme, for integrated all-optical logic and arithmetic operations.
115 citations
"All-Optical Incrementer/Decrementer..." refers methods in this paper
...In our previously published article, we proposed TOAD-based tree architecture for all-optical logic and arithmetic operations (Roy and Gayen, 2007 ), all-optical arithmetic unit (Gayen and Roy, 2008 ) and all-optical adder/subtractor unit (Gayen et al, 2009 )....
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TL;DR: In this article, a comprehensive theoretical model of an ultrafast all-optical Boolean XOR gate implemented with a semiconductor optical amplifier (SOA)-assisted Sagnac interferometer is presented.
107 citations
"All-Optical Incrementer/Decrementer..." refers background in this paper
...TOAD have the potential of being integrated, which in turn means that they can be repeatedly and reliably manufactured and massively produced so that they can be of commercial value and favorably compete with other buffering solutions (Zoiros et al, 2006 ; Glesk et al, 2001 )....
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