Difference between DWDM and OTN Last Updated : 19 Jan, 2021 Comments Improve Suggest changes Like Article Like Report 1. Dense wavelength division multiplexers (DWDM) :DWDM refers to Dense wavelength division multiplexers. It is the modules that put data from different sources together on a fiber optic cable then these modules further increases system bandwidth and capacity by using closely spaced wavelengths to carry multiple signals on same cables. The channel spacing is reduces to 1.6 nm and less . The cost effective ways of increasing capacity without replacing fiber. There are commercial systems available with the capacities of 32 channels and upwards.2. Optical transport network (OTN) :OTN refers to optical transport network, this allow a network-wide framework that adds SONET/SDH-like features like communication channels, performance monitoring, fault detection, and multiplexing hierarchy to WDM equipment. This works at Layer 1 to accumulate various tasks into the tunnel of WDM technologies, increasing the transmission distance and volume of fiber optics. This means that OTN frame structure combines the flexibility of SONET technology with the bandwidth expandability of DWDM, thus it can provide functionality of transport, multiplexing, routing, management, supervision, and survivability of optical channels carrying client signals. Difference between DWDM and OTN : SR.NODWDMOTN1.DWDM is WDM utilizing closely spaced channels.OTN is asynchronous mapping of payloads.2.The networking mode of DWDM is basically point-to-point, chain, star and ring networking.The networking mode of OTN is usually a ring network, mesh network and other networking modes3.This is basically a technology .This is the complete set which involves DWDM technology with Manageability features added to it (DWDM) .4.It is mainly used in inter provincial trunk network and intra provincial backbone network.It provides a very ideal solution for large broadband granular services.5.Its main component are multiplexer, demultiplexer, amplifier and ROADM.It is collection of optical cross-connector (OXC) and optical add/drop multiplexer (OADM), possesses functions like optical cross-ability and wavelength conversion. 6. It is applied in fiber optical transceiver to increase bandwidth over existing fiber optic backbones.It can provide functionality of transport, management, supervision, multiplexing, routing and survivability of optical channels carrying client signals.7.It features include transparency, dynamic provisioning and scalability. It adds features like fault detection, performance monitoring, communication channels, and multiplexing hierarchy to WDM equipment. Comment More infoAdvertise with us Next Article Difference between WDM and DWDM A ashvika99 Follow Improve Article Tags : Technical Scripter Computer Networks Difference Between Similar Reads Difference between SONET and DWDM In today’s telecommunication environment SONET (Synchronous Optical Networking) and DWDM (Dense Wavelength Division Multiplexing) are the two well-known technologies used for transmitting huge amount of traffic over fiber optic systems. DWDM is very important in guaranteeing high speed data transmis 6 min read Difference between WDM and DWDM Wavelength Division Multiplexing (WDM) and Dense Wavelength Division Multiplexing (DWDM) have emerged as the two most important technologies that have very enhanced the field of fiber optic communication. They act as solution providers to the optimization of capacity of the optical networks, which b 6 min read Difference between TDM and FDM TDM (Time Division Multiplexing) and FDM (Frequency Division Multiplexing) both are multiplexing techniques where TDM is used in both analogue and digital signals. In contrast, FDM is only used in analogue signals. Here we will discuss both TDM and FDM in detail and we will also see the differences 4 min read Difference between TDM and FDM TDM (Time Division Multiplexing) and FDM (Frequency Division Multiplexing) both are multiplexing techniques where TDM is used in both analogue and digital signals. In contrast, FDM is only used in analogue signals. Here we will discuss both TDM and FDM in detail and we will also see the differences 4 min read Difference Between DML and TCL Data Manipulation Language (DML) and Transaction Control Language (TCL) are critical subsets of SQL (Structured Query Language). Both play essential roles in managing and controlling data in a database, but they serve different purposes. In this article, we will explore about the Difference between 4 min read Difference between FDMA and TDMA FDMA stands for the Frequency Division Multiple Access. In the FDMA the available frequency range is split into the smaller bands. Each user gets their own frequency band to use. Its like having the different radio stations each station uses its own frequency so they dont interfere with each other. 4 min read Like