What is PD IEC/TR 62285 ‒ Non-linear coefficient measuring methods about?
PD IEC/TR 62285 is an international standard that discusses non-linear coefficient measuring methods in telecommunication fibres.
PD IEC/TR 62285 is a technical report that intends to provide guidance for uniform measurements of the non-linear coefficient of single-mode fibres (IEC 60793-2-50) in the 1550 nm region.
PD IEC/TR 62285 gives two elaborated methods, they are:
- Method A - Continuous-wave dual-frequency
- Method B - Pulsed single-frequency
Both methods require injecting extremely high powers (5 dBm or more) into the fibre, measurement of this power (absolute), and measurement of the output spectrum which is modified by non-linear effects.
Both methods use calculations that combine these measured results with those derived from other measurements such as attenuation (IEC 60793-1-40) and chromatic dispersion (IEC 60793-1-42).
Both methods have limitations on the length of fibre that is measured – in relationship with the chromatic dispersion at the wavelength being measured.
Who is PD IEC/TR 62285 ‒ Non-linear coefficient measuring methods for?
PD IEC/TR 62285 on non-linear coefficient measuring methods is relevant to:
- Optical fibre technicians
- Testing authorities
- Telecommunication fibre installers
- Manufacturers of single-mode fibre cables
- Designers of single-mode fibre cables
- Manufacturers of the optical spectrum analyzer
Why should you use PD IEC/TR 62285 ‒ Non-linear coefficient measuring methods?
The non-linear coefficient is related to the non-linear optical distortion effects as a combined parameter of self-phase modulation (SPM), cross-phase modulation (XPM), and four-wave mixing (FWM). Other fibre attributes, such as chromatic dispersion and polarisation mode dispersion, also influence the transmission.
PD IEC/TR 62285 provides you with the test methods for measuring the non-linear coefficients of telecommunication optic fibre cables. PD IEC/TR 62285 gives you detailed information about the apparatus needed to perform the test, explains the principle of the test, helps the users to execute the calculations of the interpretation of results and helps with the documentation as well. PD IEC/TR 62285 describes the measurement method, limited to the measurable length because of chromatic dispersion. PD IEC/TR 62285 provides specific details on the length and chromatic dispersion requirements.
Overall, PD IEC/TR 62285 is useful as it assists with the non-linear coefficient measuring methods for the designs of single-mode fibre which can be beneficial for your business.
