Performance analysis of Wave Length Division and Sub Carrier Multiplexing using OSSB modulation

In fiber-optics, transmission mechanism, capacity and the distance plays an important role in deciding the performance of the system. Optical fiber avails the user an enormous bandwidth using systems like multichannel optical communication. This, in todays’ world too has left an enormous potential literally untapped. Today, a very few applications involve the use of high bandwidth, giving way to the method of imposing low speed signals over the high speed carrier signals. This makes the higher speed signal, the carrier of various low speed signals. This low speed channels are multiplexed together in time to form a higher-speed channel. Various systems viz. Wavelength Division Multiplexing (WDM), Subcarrier Multiplexing (SCM) have been developed to increase the performance of existing optical communication system. In this project we will be trying to analyze the performance of Wavelength Division Multiplexing (WDM), Subcarrier Multiplexing (SCM). We will use an 8 channel MUX to analyze the performance while in SCM, we use 4 channel SCM system. The performance analysis of SCM employing OSSB modulation scheme using different modulation schemes like PSK, ASK and FSK have been analyzed and performance comparison between these schemes has been done taking several parameters into consideration using optisystem software.