What is Optical Network Architecture?

Passive Optical Network Architecture The PON architecture consists of three main units OLT, ONU and ODN. OLT located in CO is the interface between PON and the optical backbone network. OLT distributes PSTN, Internet and CATV services to as many as 16 to 128 end users per fiber line.

How does a passive optical network work?

A passive optical network (PON) is a fiber-optic network utilizing a point-to-multipoint topology and optical splitters to deliver data from a single transmission point to multiple user endpoints. Passive, in this context, refers to the unpowered condition of the fiber and splitting/combining components.

What is WDM GPON?

Wavelength Division Multiplexing is used to send different Data Streams on a single fiber at different wavelength. These Data Streams can be Video , Data and Voice.

What are the types of passive optical networks?

This article explores the various types of PON (Passive Optical Networks), how they differ and what they are used for.

• APON (ATM Passive Optical Networks)
• BPON (Broadband PON)
• EPON (Ethernet PON)
• GE-PON (for Gigabit Ethernet PON)
• GPON (Gigabit Ethernet PON)

What are optical networks used for?

Optical networking is the use of light to transmit data over fiber cables at light speed, making it ideal for low-latency middle-mile connections covering great distances.

What is optical networking technology?

An optical network is a communication system that uses light signals, instead of electronic ones, to send information between two or more points. The points could be computers in an office, large urban centers or even nations in the global telecommunications system.

Why we use passive optical network?

A passive optical network, or PON, is designed to allow a single fiber from a service provider the ability to maintain an efficient broadband connection for multiple end users. These end users are typically individual clients using PONs in a commercial environment.

Why it is called Passive Optical Network?

Definition. Passive Optical Network (PON) is a FTTH (Fiber to the Home) technology deployed in both domestic and commercial consumers. It is called a passive network since it does not require a power equipment to amplify or process signals.

What are the technologies available in the WDM network?

WDM is protocol and bit-rate independent. WDM-based networks can transmit data in IP, ATM, SONET/SDH, and Ethernet, and look after bit rates between 100 Mbps and 40 Gbps. Therefore, WDM-based networks can hold various kinds of traffic at different speeds over an optical channel.

What does WDM stand for?

WDM stands for wavelength division multiplexing, a technique used to send multiple channels of data over the same cable in fiber-optic transmission.

What is optical Ethernet?

Optical Ethernet is the physical layer of the Local Area Network (LAN) communications protocol for sending data over fiber-optic cable. It is used for connecting Internet servers and switches inside equipment racks, within data centers, and between metropolitan data centers.

What is the difference between passive and active optical networks?

Active Optical Network is used for large distance areas up to 90 Km whereas Passive Optical Network is used in small distance areas upto 20 Km. Where Passive Optical Network works on shared fiber system while Active Optical Network works for dedicated fiber system.

What are the three topologies used for fiber optical network?

Several topologies are being used for the optical fiber cable network that connects CO to CP. These topologies are: Star, Ring (or Bus), and Tree topologies.

What components are used in a passive optical network PON?

The components used in a passive optical network are: Optical line terminal (OLT) which is the device at your ISP’s central hub. Optical network terminal (ONT) which is the device near to your home or office. Optical network unit (ONU) which is virtually the same as an ONT.

What are the advantages of passive optical networks?

PON is a cost-effective technology. Because PON technology uses a single-optical fiber to support multiple users (point-to-multipoint), it costs less in infrastructure and material costs than active point-to-point systems. Offers the highest Internet speeds available.

Where is WDM used?

Wavelength division multiplexing (WDM) is a technique of multiplexing multiple optical carrier signals through a single optical fiber channel by varying the wavelengths of laser lights. WDM allows communication in both the directions in the fiber cable.

What is working principle of WDM?

WDM is a technology that enables various optical signals to be transmitted by a single fiber. Its principle is essentially the same as Frequency Division Multiplexing (FDM). That is, several signals are transmitted using different carriers, occupying non-overlapping parts of a frequency spectrum.

Why WDM is used in optical fiber?

Wavelength division multiplexing, WDM, has long been the technology of choice for transporting large amounts of data between sites. It increases bandwidth by allowing different data streams to be sent simultaneously over a single optical fiber network.

What is the difference between WDM and MME?

WDM stands for “Windows Driver Model,” which has improved performance in latency over standard type drivers in Windows based systems only. MME stands for “Microsoft Multimedia Environment,” and is supported in almost all PC audio applications.

What technology does optical Ethernet use?

Explanation: Optical Ethernet is the fourth generation of the Ethernet family. The earlier generations include X. 25, Frame Relay and ATM. Unlike these technologies, optical Ethernet uses IP-based technology.