What is PD IEC/TR 61282-9- Fibre optic communication system design guides about?
PD IEC/TR 61282-9 is a safety standard on fibre optic communication system design guides.
PD IEC/TR 61282-9, which is a Technical Report, describes the effects and theory of polarization mode dispersion (PMD) and provides guidance on PMD measurements.
The polarization mode dispersion phenomenon is a signal of fibre-optic transmission signal induced by variation in the signal output state of polarization with optical frequency.
Note: PMD can limit the bit rate-length product of digital systems.
Who is PD IEC/TR 61282-9- Fibre optic communication system design guides for?
PD IEC/TR 61282-9 on polarization mode dispersion measurements and theory is relevant to:
- Manufacturers and installers of optical polarizers
- Manufacturers and installers of polarizing remover machines
- Manufacturers of optical fibre, systems, and cables
- Designers of fibre optic system
- Fibre network designers
- Fibre optic engineers
Why should you use PD IEC/TR 61282-9- Fibre optic communication system design guides?
PD IEC/TR 61282-9, which is a technical report is complementary to the International Standards describing polarization mode dispersion (PMD) procedures (IEC 60793-1-48, IEC 61280-4-4, IEC 61290-11-1, IEC 61290-11-2, and IEC 61300-3-32) and other design guides on PMD (IEC 61282-3 and IEC 61292-5), as well as ITU-T Recommendation G.650.2.
The PMD system power penalty varies by transmission format and bit rate. PD IEC/TR 61282-9 varies with optical frequency and light source state of polarisation. Using different SOPs at the source can produce a signal delay at the link's output. The differential group delay (DGD) is related to two extremes of input SOP. At these extremes, the output appears as a single pulse with half the DGD moved up or down. Intermediate SOPs appear as a weighted total of two pulses, one shifted up half the DGD and one shifted down. The sum of two shifted pulses generates signal distortion. The system power penalty is specified by a maximum bit error rate and a received power minimum. In the absence of distortion, the maximum allowable bit error rate is a minimum received power. In the case of distortion, raise the received power to maximize the bit error rate. The power penalty of the distortion is the required increase in received power. The term PMD refers to two distinct concepts. The PMD value assigned to measurements is a statistical parameter for the DGD distribution. The literature and measurement methods use two main metrics: linear average and root mean square (RMS). PD IEC/TR 61282-9 explains the commonality of the various techniques.
Overall, PD IEC/TR 61282-9 is helpful as it assists the user with several measurement methods with different strengths and capabilities. They are all based on quantifying the magnitude of variation in output SOP with optical frequency.
What’s changed since the last update?
PD IEC/TR 61282-9:2016 supersedes PD IEC/TR 61282-9:2006 which is withdrawn.
PD IEC/TR 61282-9:2016 replaces the first edition published in 2006.
PD IEC/TR 61282-9:2016 includes the following significant technical changes with respect to the previous edition:
- Much of the theory has been condensed – focusing only on content that is needed to explain the test method
- Symbols have been removed, but abbreviations are retained
- The material in Clause 5 has been significantly reduced to avoid repeating what is already in the actual International Standards. Instead, the focus is on explaining the International Standards
- Measurement methods that are not found in International Standards have been removed
- There are significant corrections to the modulation phase-shift method, particularly in regard to the Mueller set technique