IEC 61291-1-2018 pdf download.Optical amplifiers – Part 1: Generic specification.
This part of IEC 61 291 applies to all commercially available optical amplifiers (OAs) and optically amplified assemblies. It applies to OAs using optically pumped fibres (OFAs based either on rare-earth doped fibres or on the Raman effect), semiconductors (SOAs), and waveguides (POWAs).
The object of this document is
– to establish uniform requirements for transmission, operation, reliability and environmental properties of OAs, and
– to provide assistance to the purchaser in the selection of consistently high-quality OA products for his particular applications.
Parameters specified for OAs are those characterizing the transmission, operation, reliability and environmental properties of the OA seen as a “black box” from a general point of view. In the sectional and detail specifications a subset of these parameters will be specified according to the type and application of the particular OA device or assembly.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60050-731 , International Electrotechnical Vocabulary – Chapter 731: Optical fibre communication (available at http://www.electropedia.org)
IEC 61 290 (all parts), Optical amplifiers – Test methods
IEC 61 290-1 -1 , Optical amplifiers – Test methods – Part 1-1: Power and gain parameters – Optical spectrum analyzer method
IEC 61 290-1 -2, Optical amplifiers – Test methods – Part 1-2: Power and gain parameters – Electrical spectrum analyzer method
IEC 61 290-1 -3, Optical amplifiers – Test methods – Part 1-3: Power and gain parameters –Optical power meter method
IEC 61 290-3-1 , Optical amplifiers – Test methods – Part 3-1: Noise figure parameters – Optical spectrum analyzer method
IEC 61 290-3-2, Optical amplifiers – Test methods – Part 3-2: Noise figure parameters – Electrical spectrum analyzer method
IEC 61 290-4-1 , Optical amplifiers – Test methods – Part 4-1: Gain transient parameters – Two wavelength method
3 Terms, definitions and abbreviated terms
3.1 Overview The definitions listed in 3.2 refer to the meaning of the terms used in the specifications of OAs. Only those parameters listed in the appropriate specification template, as in IEC 61 291 -2 and IEC 61 291 -4, are intended to be specified.
The list of parameter definitions of OAs, given in 3.2, is divided into two parts: the first part, 3.2.1 , lists those parameters relevant for OA devices, namely power, pre-, line- and distributed amplifiers; the second part, 3.2.2, lists the parameters relevant for optically amplified, elementary assemblies, namely the optically amplified transmitter (OAT) and the optically amplified receiver (OAR). In any case where the value of a parameter is given for a particular device, it will be necessary to specify certain appropriate operating conditions such as temperature, bias current, pump optical power. In Clause 3, two different operating conditions are referred to: nominal operating conditions, which are those suggested by the manufacturer for normal use of the OA, and limit operating conditions, in which all the parameters adjustable by the user (e.g. temperature, gain, pump laser injection current) are at their maximum values, according to the absolute maximum ratings stated by the manufacturer. The OA shall be considered as a “black box”, as shown in Figure 1 . The OA device shall have two optical ports, namely an input and an output port (Figure 1 a)). The OAT and OAR shall be considered as an OA integrated on the transmitter side or on the receiver side, respectively. Both kinds of integration imply that the connection between the transmitter or the receiver and the OA is proprietary and not to be specified. Consequently, only the optical output port can be defined for the OAT [after the OA, as shown in Figure 1 b)] and only the optical input port can be defined for the OAR [before the OA, as shown in Figure 1 c)].
The optical ports may consist of unterminated fibres or optical connectors. Electrical connections for power supply (not shown in Figure 1 ) are also necessary. Following this “black box” approach, the typical loss of one connection and the corresponding uncertainty will be included within the values of gain, noise figure and other parameters of the OA device.IEC 61291-1 pdf download.