BS EN 61300 is a series on fibre optic interconnecting devices and passive components. Fibre optic interconnecting devices and passive components ensure an optical function necessary for the proper functioning of the network. BS EN 61300-3-38 describes the measurement methods necessary to characterise the group delay properties of passive devices and dynamic modules. From these measurements, further parameters like group delay ripple, linear phase deviation, chromatic dispersion, dispersion slope, and phase ripple can be derived. In addition, when these measurements are made with resolved polarization, the differential group delay can also be determined as an alternative to separate measurement with the dedicated methods.
BS EN 61300-3-38 on fibre optic interconnecting devices and passive components is useful for:
Fibre optic interconnecting devices and passive components do not require the input of external energy because they operate on the optical signal. BS EN 61300-3-38 covers transmission measurements of the group delay properties of passive devices and dynamic modules. In order to interpret the group delay properties, it is essential to also have the amplitude spectral measurement available. For this reason, loss measurements are also covered to the extent that they are required to make proper dispersion measurements. The methods described in this procedure are intended to be applicable in any wavelength band (C, L, O, etc.) although examples may be shown only in the C band for illustrative purposes.
BS EN 61300-3-38 is separated into two sections, one concentrating on measurement methods, and one concentrating on analysis of the measurement data. The measurement methods covered in BS EN 61300-3-38 are the modulation phase-shift method, the swept-wavelength interferometry method, and the polarization phase shift method. The modulation phase-shift method is considered the reference method. The methods are selected particularly because of their ability to provide spectrally resolved results, which are often necessary for passive components and especially for wavelength-selective devices. The appropriate measurement parameter to evaluate the group delay ripple, and the method of estimating the phase ripple from the measurement result of GDR are shown in BS EN 61300-3-38. The phase ripple is important as a measure of the influence that GD of an optical device has on the transmission quality since many tunable dispersion compensators use the interference effect where the ripple is a significant effect. Using BS EN 61300-3-38 you can describe the measurement methods necessary to characterise the group delay properties of passive devices and dynamic modules.
EN 61300-3-38:2012
IEC 61300-3-38:2012