What is pon technology

If test access exists, then test can be performed with a portable or a centralized test solution using out-of-band wavelength such as nm to avoid any clash with existing PON wavelengths.

Where test access is not planned, access must be gained from one or the other endpoint at the OLT or ONT, or a section of the PON must be taken out of service temporarily. There is little redundancy and in this case of an accidental fiber cut or a faulty OLT, the service disruption can be extensive.

Overall, the inherent benefits of passive optical networks substantially outweigh these limitations. As PON technology continues to improve, the strategic and economic advantages of PON deployment become more compelling. The challenges being addressed by designers of future generations include improved range capability and higher splitter ratios to reduce cable outlay even further.

These improvements, combined with speeds now reaching 10 Gbps and beyond, will help to continue the expansion of passive optical networks into the smart cities, universities, hospitals and corporations that make up the connected world of tomorrow.

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What Is a Passive Optical Network? Distance Despite the numerous benefits, there are potential drawbacks to passive optical networks when compared to active optical networks. Previous Slide Next Slide. Technical Note. A comprehensive guide to testing best practices, standards, specifications, and more. Download Now. White Paper. Are you ready for smarter testing? Learn how to get the job done right the first time!

Since the splitting function is a one-to-many broadcast of the same data stream, the ONTs are responsible for filtering packets meant for the various connected endpoint devices. Encryption ensures that each ONT reads only the contents addressed to the endpoints connected to it. Optical splitters take a single light source a single fiber optic strand and refract and duplicate it multiple times to "outbound" fibers.

In its simplest form, an optical beam splitter splits a light source in two by using two back-to-back prisms. Typical gigabit-capable passive optical network GPON deployments have used a splitting ratio of or Those same standards set the distance between active devices at 20 kilometers. Because PON uses the same strand of fiber to send and receive data, the passive optical splitter also acts as an optical combiner receiving data traffic from the same connected end devices.

To achieve this, PON takes advantage of two distinct types of long-established telephony multiplexing concepts: wavelength division and time division.

Wavelength-division multiplexing WDM allows bidirectional traffic across a single fiber by using a different wavelength for each direction of traffic: the nanometer nm wavelength for downstream traffic and the nm wavelength for upstream traffic. The feeder fiber starts from the optical distribution frame ODF in the central office telecommunications room and ends at the optical distribution point for long-distance coverage. The distribution fiber from the optical distribution point to the optical access point distributes optical fibers for areas alongside it.

The drop fiber connects the optical access point to terminals ONTs , achieving optical fiber drop into user homes. In addition, the ODN is the very path essential to PON data transmission and its quality directly affects the performance, reliability, and scalability of the PON system.

The reduced cabling infrastructure no active elements and flexible media transmission contribute to the passive optical networks more ideal for home Internet, voice, and video applications.

Additionally, passive optical networks can also be applied in college campuses and business environments, providing cost-effective solutions. 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.

The PON architecture is becoming increasingly popular for its efficiency and cost-effectiveness over copper networks. PONs are unique, as they can deliver high broadband connections using optical fiber for the last mile of telecommunications. FTTx is a generic term describing the way optical fiber provides broadband to a variety of devices in that last mile. PONs are the next step in networking that can provide end users with the demanding bandwidth they desire, right to their doorstep or other destination.

IT professionals should make a point of studying and understanding optical networks and developing critical information technology skills with a great range of applications and industry demand.

What distinguishes a PON from other network structures is also what makes it highly dependable: a PON uses no electrically powered equipment in its path. What makes a passive optical network passive is that it uses unpowered optical splitters — which is not a function of an active optical network. The two popular optical systems that make FTTx broadband connections possible both do the same job; however, they differ in how this job is done.