What is PD IEC/TR 61282-13 - Fibre optic communication system design guides about?
PD IEC/TR 61282 is a series on fibre optic communication system design guides. A fibre optic communication system is a method of transmitting information from one place to another by sending pulses of infrared light through an optical fibre. PD IEC/TR 61282-13 is a technical report, that presents general information about inservice measurements of polarization mode dispersion (PMD) and chromatic dispersion (CD) in fibre optic links. PD IEC/TR 61282-13 describes the background and needs for these measurements, the various methods and techniques developed thus far, and their possible implementations for practical applications. 
Who is PD IEC/TR 61282-13 - Fibre optic communication system design guides for?
PD IEC/TR 61282-13 on fibre optic communication system design guides is useful for:
- Telecommunication component manufacturers
- Telecommunication equipment manufacturers
- Design engineers
- Quality control personnel
Why should you use PD IEC/TR 61282-13 - Fibre optic communication system design guides?
Excessive chromatic or polarization mode dispersion in fibre optic links may severely impair the transmission of high-speed optical signals. It is therefore important to accurately characterize the end-to-end optical properties of a fibre link before it is put into service. Chromatic dispersion or polarization mode dispersion in a fibre link may be characterized using any of the measurement methods described in international standards. A common feature of these methods is that they require either broadband or broadly tuneable optical probe signals to be injected into one end of the link while the optical properties of the fibre are analysed at the other end. Consequently, the fibre link cannot carry any traffic during the duration of the measurement and has to be taken out of service. Such out-of-service measurements are usually acceptable when a new fibre link is installed. However, they are highly undesirable when the fibre dispersion needs to be re-measured in a link that already carries commercial traffic. This situation may occur, for example, when a link is considered to be upgraded to a higher bit rate, e.g., from transmitting 10-Gb/s NRZOOK to 40-Gb/s DPSK signals, or during occasional troubleshooting. When conventional fibre characterization methods are used, all signals carried by the link have to be re-routed to other links before the measurement can be performed.
To avoid such time-consuming re-configuration of network traffic, various methods have been developed for measuring fibre properties in transmission links that carry live commercial traffic [2-11]. An important requirement for in-service fibre characterization is that the measurement procedure must not at any time interrupt or otherwise impair the transmission of traffic signals through the fibre. PD IEC/TR 61282-13 describes the measurement principle and application of seven different in-service fibre characterization methods as well as their impact on network operation. Using PD IEC/TR 61282-13 you can present general information about inservice measurements of polarization mode dispersion and chromatic dispersion in fibre optic links.
