DOI: http://dx.doi.org/10.26483/ijarcs.v8i8.4683 Volume 8, No. 8, September-October 2017 International Journal of Advanced Research in Computer Science RESEARCH PAPER Available Online at www.ijarcs.info © 2015-19, IJARCS All Rights Reserved 287 ISSN No. 0976-5697 DESIGNING OF NOVEL SECURITY BASED WDM-PON SYSTEM BY USING BROADBAND LIGHT SOURCE (BLS) Simrandeep Singh Thapar Associate Professor, Deptt. of Computer Applications ACET, Amritsar Punjab, India Himali Sarangal Assistant Professor, Deptt. of ECE GNDU RC Jalandhar Punjab, India Abstract: The Optical network plays an important role in the communication field because of its inherent benefits. It reduces capital and operational cost and also supports a wide range of new and high-bandwidth applications. The most effective and promising technique used in the Optical communication is WDM-PON (Wavelength division multiplexing passive optical network). WDM-PON provides relatively higher bandwidth security, high speed and makes communication reliable but security is the main issue on which various attempts are made to increase this security level in WDM-PON. In this paper, a 20 X 10 Gbps self-protected WDM-PON architecture is used to enhance the security level by using the Broadband light source (BLS). The results of this study show that physical security can be achieved through Broadband light source in which each frame is transmitted at a unique wavelength and secured data is obtained at the output. The Performance analysis is performed by using the Optisystem software. Keywords: Fiber to the home (FTTH), Fiber to the building (FTTB), Wavelength Division Multiplexing Passive Optical Network (WDM-PON), Optical Line Terminal (OLT), Optical Network Unit (ONU), Broadband Light Source (BLS). 1. INTRODUCTION A huge information measure capability is provided by the optical access network which incorporates several applications like Fiber to the house (FTTH), Fiber to the building (FTTB). PON is a good and promising technique accustomed implement the FTTH. With the assistance of various number techniques, an outsized variety of users is often transmitted on one fiber. WDM is the successful technique within which capability of a fiber is multiplied on the idea of the magnitude. It is troublesome to implement all the changes on TDM (Time-division multiplexing) attributable to this WDM-PON is most popular over the TDM PON [1]. Higher information rates are often achieved by victimization WDM-PON system and conjointly it provides higher information measure to the system [2]. APD receiver provides comparatively high responsivity still as high quantum potency as compared to the PIN Photoreceiver. Bessel filter shows higher performance in terms of Minimum BER and most Quality issue [3]. Under the normal and protection mode operations, evaluation of WDM-PON is done in both upstream and downstream directions. The performance of scalable self-protected WDM-PON shows the good result in comparison to other PON architecture [4]. Enhanced security system can be used in WDM-PON with the help of hybrid approach [5]. In the Hybrid WDM/TDM PON, Dynamic bandwidth and wavelength allocation (DBWA) algorithms are implemented to solve the traffic originated by end users equipped with transceivers with different characteristics [6]. WDM-PON uses passive components which reduce the maintenance cost, as well as best performance, is achieved in the system [7]. Non-return to zero (NRZ) scheme is used in the realization of the WDM-PON and shows the good result on fiber length of 20-100 km [8]. As compared to TDM PON technology, WDM-PON supports a large number of users and high data rates [9]. RSOA (Reflective Semiconductor Optical Amplifier) can be used in WDM-PON for better performance [10].A better result can also be obtained through Low pass Bessel filter in the WDM-PON system [11]. Different amplifiers used in WDM-PON in which EDFA is proved to be the best amplifier because it has less crosstalk associated with it and hence, a less chromatic dispersion is present in the system. It has also shown best performance in terms of the maximum quality factor and minimum BER value [12]. Further, dispersion compensation technique such as Fiber Bragg grating (FBG) is used to compensate the dispersion and it is also used in monitoring the faults [13][14]. DQPSK based OCDM/WDM-PON system is less complex than On- Off keying (OOK). It removes the complexity of WDM encoder and decoder [15]. Reduction in four-wave mixing can be done by using the EDFA fiber [16]. DPSK/NRZ orthogonal modulation provides a multicast overlay scheme which is used to realize WDM-PON at the data rate of 10 Gbps [17].The bidirectional approach of GPON architecture can be implemented in downstream directions at the data rate of 10 Gbps and 2.5Gbps in the upstream direction [18]. In the present paper, we have presented the simulation of secured WDM-PON system to provide security with the help of broadband light source. Data is sent at a rate of 10 Gbps on a single mode of the fiber at a distance 70 km. This paper is organized as follows: Section 2 contains the system description. Section 3 discusses the results of the system in which good quality signal received at each Optical Network Unit (ONU). Also, the transmission of 20 channels is successfully demonstrated on the receiver side and finally, Section 4 summarizes and concludes this paper.