Osa ultrafast alloptical half adder using quantumdot. Multimode based alloptical nonlinear signal processors. Difference frequency generation in a periodically poled lithium niobate waveguide serves as the and gate and crossgain modulation in a semiconductor. All optical signal processing devices operating at speeds 40 gbs would represent a significant advancement impacting a wide range of applications in communications, computing, and signal processing. At the low input powers, the output of the device remains at a low and. Soabased technologies semiconductor material is very attractive in alloptical signal processing. Using this type of switch, a set of processing operations ranging from. Aug 21, 2008 semiconductorbased ultrafast alloptical signal processing devices a key technology for the next generation of ultrahigh bandwidth optical communication systems. Photonic time differentiators are fundament devices for alloptical signal processing in future highspeed optical communication networks, and they can be also applied in radiofrequency rf.
Ultrafast alloptical signal processing devices request pdf. The four important optical signal processing functional blocks in optical switching are presented, i. Optical fiber and semiconductor based devices are addressed, and some. All optical switches for signal regeneration and processing based on crossphase modulation xpm in semiconductor optical amplifiers soa have demonstrated great potential in terms of high switching speed, small footprint, and low power consumption 1,2. Soabased devices for alloptical signal processing request pdf. Ultra fast alloptical signal processing devices discusses the state of the art development of semiconductorbased ultrafast alloptical devices, and their various signal processing applications. As the scheme exploits soa based mzi switches thus making it suitable for integrated solutions. An approach for realization of all optical nand gate using. Our work lays the foundation for developing ultracompact and ultrafast alloptical signal processing devices. In this paper, a new and alternative scheme for alloptical half adder using two qdsoabased machzehnder. Optical signal processing brings together various fields of optics and signal processing namely, nonlinear devices and processes, analog and digital signals, and advanced data modulation formatsto achieve highspeed signal processing functions that can potentially operate at the line rate of fiber optic communications. Optical signal processing is a collection of synopses of the works of many experts in the different fields of optical signal processing. Semiconductor optical amplifierbased alloptical gates for highspeed optical processing. Request pdf soabased devices for alloptical signal processing development of alloptical and wavelength domain multiplexing wdm networks requires numerous and diversified optical.
That is why the usage of optical amplifiers for alloptical signal processing purposes has been intensively studied all over the world during recent years, and various applications of optical. Over the last few years, an impressive range of alloptical signal processors have been proposed. Various schemes with and without semiconductor optical amplifiers are discussed and compared. Various soa based switching configurations to implement combinational logic circuits have been. The present invention relates to the all optical logic and operation in a soa semiconductor optical amplifier based machzehnder interferometer. Semiconductor microring laser model for alloptical signal. Quantumdot semiconductor optical amplifier qd soa based gate has added continue reading. Alloptical signal regeneration based on gainclamped. Digital signal processing for optical communications and. Towards integrated devices for ultrafast alloptical. Chalcogenide glass waveguide devices for alloptical. Characterization of the ultrafast carrier dynamics of an inas. Jan 27, 2016 first, the proposed phaseshifted dfbsoa based analog optical signal processor is configured as a photonic ode solver, as shown in fig.
More particularly, it relates to the technology making feasible ultra highspeed logic operations while maintaining a small size and a low input power by utilizing a crossphase modulation xpm wavelength converter composed of semiconductor optical. Previously proposed homodyne crosstalk mitigation schemes mainly focused on how to reduce the signal crosstalk beating probability, and how to transfer the signal crosstalk beating to be out of the signal band. First, the proposed phaseshifted dfbsoa based analog optical signal processor is configured as a photonic ode solver, as shown in fig. Ueno, theoretically predicted nonlinear phase imbalance for delayedinterference signalwavelength. A new gatefor low cost design of alloptical reversible. Us6624929b2 alloptical logic and operation in a soa. The method to achieve alloptical processing functions is to use a nonlinear optical material where different light beams can interact. It is also used as an important element in optical switching, alloptical signal processing, demultiplexing, regeneration and wavelength conversion. Realizing multifunctional alloptical data processing on. Towards integrated devices for ultrafast alloptical signal processing in optical networks ivan gleska, md shakil ahmeda, zifei wangb and lawrence r.
Us6624929b2 alloptical logic and operation in a soabased. Alloptical devices should ideally be easily integratable with. Introduction silicon presents a versatile and lowcost platform for data processing at speeds of 100 gbits and beyond. All optical signal processing is, therefore, critical to realization of all optical networks. Pdf alloptical signal processing technologies in flexible optical. The gcsoa was first introduced for suppressing signal induced gain fluctuations of. Cascadability properties of mzisoabased all optical 3r. View enhanced pdf access article on wiley online library html view. The goal of this chapter is to present design criteria, improvement of the performance and integration of the soabased switches. This paper discusses recent advances in femtosecond alloptical devices with a particular emphasis on ultrafast pulse generators and alloptical switches as basic devices for ultrafast systems 1, 7.
Furthermore, they may be integrateable and have a moderate to low power consumption. A promising approach to the implementation of ultrafast alloptical circuit is to. Most efforts are centered in semiconductor optical amplifier soa based devices. Soabased functional devices, proceedings of spie 10. In optical regeneration, there are three basic signalprocessing functions. All optical logics are realized on nanoscale sic waveguides with adddrop microring functionality, including the tetm polarized data decoding, the dualport kerr switching and gating beyond 12. The design and implementation of alloptical devices capable of controlling light with light 9 at very high speeds have been.
An alloptical decoder and data comparator is implemented using soa based machzehnder interferometer mzi. Experimental and theoretical investigation of the impact. Interferometric devices have drawn a great interest in alloptical signal processing for their highspeed photonic activity. Semiconductor optical amplifier soa based functional devices are of interest for optical signal processing due3 to their many attractive features, which include highspeed operation, potentially low polarization dependency, large optical bandwidth and low loss. This paper presents a theoretical and experimental analysis of saturated semiconductor optical amplifier soa based interferometric switching arrangements. Soa is inserted in each arm of the mzi switch and two couplers are used. Alloptical nrz wavelength conversion based on a single. All optical devices should ideally be easily integratable with. Towards integrated devices for ultrafast alloptical signal. Current and future challenges alloptical gates experienced a rapid growth of research advances in the past few decades and then slowed down more recently, because there are still some critical challenges and big research issues for the.
Characterization of the ultrafast carrier dynamics of an. Sep 21, 2006 this paper have successfully demonstrated an all optical wavelength conversion scheme for all speed returntozero rz format data input by using a sagnac interferometer based on semiconductor optical amplifier soa. Theoretical and experimental study of fundamental differences. Alloptical fiber signal processing based on balanced nolm. Many of the nonlinear materials has investigated, but one device has emerged as a practical solution for alloptical signal processing is the soa. Numerous ways of alloptical gates without soa using length of the fiber, waveguide, circulator, filters, acousticoptic waves, and changing the refractive index of the optical waveguide have been discussed in the first part. Reconfigurable optical signal processing based on a distributed. Application of soabased circuits in alloptical signal. Experimental and theoretical investigation of the impact of. The method to achieve all optical processing functions is to use a nonlinear optical material where different light beams can interact.
Nielsen, experimental and theoretical investigation of semiconductor optical amplifier soa based alloptical switches, ph. The ask signals are then used as bitaligned pushpull optical gating signals to an mzisoabased wavelength converter. First, the optical power of the input signal can be low due to inherent amplification in the device, leading to high power efficiency. Alloptical signal processing based on semiconductor optical. Reconfigurable optical signal processing based on a. The introduction of ultrafast communication systems based on alloptical signal processing is considered to be one of the most promising ways to handle the rapidly increasing global communication traffic. Femtosecond alloptical devices for ultrafast communication. This chapter discusses onchip all optical signal processing for a number of applications, e. Soa based optical processing devices requires low power approximately 1w than the electronic equivalent and can be readily integrated to scale to arrays. Nonlinear optical signal processing for tbits ethernet. First, the reduction of a gain recovery time in soa by injection of a transparent assist light wass discussed. All optical regeneration techniques archive ouverte hal.
Nanophotonic devices for linear and nonlinear optical signal. The first application was selected so as to investigate whether it is possible to build. First reported soa based optical gates was a sagnac interferometer incorporating. In this paper, a comprehensive design and simulation of an allphotonic xor logic gate is proposed. Other readers will always be interested in your opinion of the books youve read. Alloptical gates may be constructed using the nonlinearity effect which is introduced without soa or with soa.
Pier b online on the feasibility of 320 gbs alloptical. Alloptical signal processing based on semiconductor. The optical gates are classified according to their design structures. An alloptical integrated full addersubtractor and demultiplexer is proposed and implemented using soabased machzehnder interferometer mzi. Difference frequency generation in a periodically poled lithium niobate waveguide serves as the and gate and crossgain modulation in a. Normalized probe transmission at 10 and 40 ghz for 500 and 1500 soas. The attractive issue of the proposed method is that the converted signal can be obtained simultaneously with inverted and noninverted wavelength conversion signals. All optical data comparator and decoder using soabased mach. Therefore, soa based logic gates still play an important role in highspeed all optical signal processing. Chalcogenide glass waveguide devices for alloptical signal. The simulated system has the potential to operate at above 40 gbs. An input pulse transfers the rz pattern onto a probe signal 2. Pdf alloptical signal processing using silicon devices. Semiconductor optical amplifierbased alloptical gates.
Whether youve loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them. Alloptical circuits for signal processing and computing have attracted great attention in the past years since they could overcome the bandwidth and speed limitations imposed by conventional electronicbased systems18. Firstly, due to the gain of the device and strong resonate. Alloptical signal processing devices operating at speeds 40 gbs would represent a significant advancement impacting a wide range of applications in communications, computing, and signal processing. Onchip optical sampling using an integrated soabased. It focuses on a variety of signalprocessing devices that make use of the.
Information can be encoded in amplitude, phase, wavelength. The injection current is below the lasing threshold. A new gatefor low cost design of alloptical reversible combinational and sequential circuits s. Therefore, soabased logic gates still play an important role in highspeed alloptical signal processing. Alloptical nrz wavelength conversion based on a single hybrid iiivsi soa and optical filtering yingchen wu, 1,2, qiangsheng huang,1,2 shahram keyvaninia,2 andrew katumba, 2 jing zhang,2 weiqiang xie,2 geert morthier,2 jianjun he, 1 and gunther roelkens2 1state key laboratory of modern optical instrumentation, college of optical science and engineering, zhejiang. Soabased optical processing devices requires low power approximately 1w than the electronic equivalent and can be readily integrated to scale to arrays. The device implements a compact design featuring a size of 2 x 1. Alloptical signal processing using nonlinearities in. The 80gbs data channel with the 1560nm wavelength was first amplified to the.
This work presents the first photonic logic gate based on highly nonlinear fiber component only that achieves a data rate of 20 gbps. The book also includes systems or algorithms that have been successfully tried and used. All optical data comparator and decoder using soabased. The design is based on the thirdorder kerr nonlinear effect in highly nonlinear fiber, i. Pdf alloptical signal processing has always been critical assistance for the. Semiconductor microring laser model for alloptical. Multimode based alloptical nonlinear signal processors 24. Recipe for intensity modulation reduction in soabased. Alloptical logics are realized on nanoscale sic waveguides with adddrop microring functionality, including the tetm polarized data decoding, the dualport kerr switching and gating beyond 12. We demonstrate an all optical half adder for bitwise addition of two serial data streams that simultaneously generates sum and carry outputs. Soa based optical signal processing devices can easily handle complex signal and process the data rates of upto 40gbs with much less power consumption of 1w, however modern high speed electronic consumes much equipment. Many of the nonlinear materials has investigated, but one device has emerged as a practical solution for all optical signal processing is the soa. Design of xor photonic gate using highly nonlinear fiber.
Various soa based switching configurations to implement combinational logic circuits have been proposed. Alloptical signal processing and applications within the. We demonstrate an alloptical half adder for bitwise addition of two serial data streams that simultaneously generates sum and carry outputs. Alloptical switches for signal regeneration and processing based on crossphase modulation xpm in semiconductor optical amplifiers soa have demonstrated great potential in terms of high switching speed, small footprint, and low power consumption 1,2. The 2r regeneration using soabased interferometers is based on a phase shift. All optical signal processing based on semiconductor optical amplifiers yong liu, ligong chen, tianxiang xu, jinglei mao, shangjian zhang, yongzhi liu state key laboratory of electronic thin films and integrated devices, school of optoelectronic information, university of electronic science and technology of china, chengdu 610054, china.
In this chapter, we discuss onchip alloptical signal processing based on chalcogenide rib waveguides. However, such systems cannot be realized without introducing ultrafast, alloptical devices, since existing optoelectronic and electronic devices and integrated circuits would not. In this paper we demonstrate for the first time allfiberbased alloptical signal processing including wavelength conversion, 2r regeneration and otdm demultiplexing in three balanced or imbalanced nonlinear optical loop mirrors nolm, anewtype of. Jul 30, 2001 semiconductor optical amplifier soa based functional devices are of interest for optical signal processing due3 to their many attractive features, which include highspeed operation, potentially low polarization dependency, large optical bandwidth and low loss. For the first time, it is shown that such devices can provide enhanced intensity modulation reduction to returntozero rz formatted input pulse trains, when the soa is saturated with a. The module performs the required xor and and operations using only two nonlinear optical elements. It is worth noting that, since the proposed photonic firstorder ode solver based on a phaseshifted dfbsoa is a linear device, a highorder ode. Ultrahighspeed alloptical wavelength conversion for polsk signal based on parallel dualpump fwm in soa peili li, weihua shi, dexiu huang proc. Current and future challenges all optical gates experienced a rapid growth of research advances in the past few decades and then slowed down more recently, because there are still some critical challenges and big research issues for the. Semiconductorbased ultrafast alloptical signal processing devices a key technology for the next generation of ultrahigh bandwidth optical communication systems. Alloptical regeneration using soabased polarization. Future bandwidth demand in optical communication and signal processing systems will soon exceed 100 gb s. The next section describes first the advantages of femtosecond alloptical devices and explains basic signal processing functions required for. Previously proposed homodyne crosstalk mitigation schemes mainly focused on how to reduce the signalcrosstalk beating probability, and how to transfer.
The present invention relates to the alloptical logic and operation in a soa semiconductor optical amplifierbased machzehnder interferometer. Alloptical signal processing based on semiconductor optical amplifiers yong liu, ligong chen, tianxiang xu, jinglei mao, shangjian zhang, yongzhi liu state key laboratory of electronic thin films and integrated devices, school of optoelectronic information, university of electronic science and technology of china, chengdu 610054, china. It is divided into two major divisions that is, nonsemiconductor optical amplifier based gates and semiconductor optical amplifier based gates. Nanophotonic devices for linear and nonlinear optical. This paper have successfully demonstrated an alloptical wavelength conversion scheme for allspeed returntozero rz format data input by using a sagnac interferometer based on semiconductor optical amplifier soa. The transmission system with the wavelength conversion from 193.
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