What is PD IEC/TR 62349 - Guidance of measurement methods and test procedures about?
PD IEC/TR 62349 discusses guidance of measurement methods and test procedures. Measurement methods are the quantification of attributes of an object or event, which can be used to compare with other objects or events. PD IEC/TR 62349 applies to polarization-maintaining (PM) optical fibres. The object of PD IEC/TR 62349 is to define test procedures to be used in establishing uniform requirements for the geometrical and transmission properties of PM fibres.
Who is PD IEC/TR 62349 - Guidance of measurement methods and test procedures for?
PD IEC/TR 62349 on the guidance of measurement methods and test procedures is useful for:
- Telecommunication sector
- Quality control personnel
- Design engineers
Why should you use PD IEC/TR 62349 - Guidance of measurement methods and test procedures?
Measurement is a cornerstone of trade, science, technology, and quantitative research in many disciplines. The phase beat length measurement method is based on applying a point-like perturbation along a short length of the fibre under test, and either monitoring the changes in output power, or monitoring changes in output SOP at one wavelength versus travel distance. The perturbation can either be a lateral force or an electromagnet. In PD IEC/TR 62349 the test method using an electromagnet and the monitoring of output power versus travel distance is described in detail. Examples of other test methods expected to give similar measurement results are also described.
PD IEC/TR 62349 describes two methods for measuring the polarization crosstalk of PM fibres. Method A is the power ratio method, which uses the maximum and minimum values of output power at a specified wavelength, and Method B is the in-line method, which uses an analysis of the Poincaré sphere. Crosstalk values obtained by Methods A and B are based on different definitions. The crosstalk measured by Method A is defined as an 'averaged' value over a measured wavelength range. In contrast, the crosstalk value obtained from Method B shows 'the worse case' crosstalk value. Using PD IEC/TR 62349 you can define test procedures to be used in establishing uniform requirements for the geometrical and transmission properties of polarization-maintaining optical fibres.
