BS EN 61290-4-3:2015
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Optical amplifiers. Test methods – Power transient parameters. Single channel optical amplifiers in output power control
Published By | Publication Date | Number of Pages |
BSI | 2015 | 30 |
IEC 61290-4-3:2015(E) applies to output power controlled optically amplified, elementary sub-systems. It applies to optical fibre amplifiers (OFA) using active fibres containing rare-earth dopants, presently commercially available, as indicated in IEC 61291-1, as well as alternative optical amplifiers that can be used for single channel output power controlled operation, such as semiconductor optical amplifiers (SOA). The object of this standard is to provide the general background for optical amplifier (OA) power transients and its measurements and to indicate those IEC standard test methods for accurate and reliable measurements of the following transient parameters: – Transient power response; – Transient power overcompensation response; – Steady-state power offset; – Transient power response time. The stimulus and responses behaviours under consideration include: – Channel power increase (step transient); – Channel power reduction (inverse step transient); – Channel power increase/reduction (pulse transient); – Channel power reduction/increase (inverse pulse transient); – Channel power increase/reduction/increase (lightning bolt transient); – Channel power reduction/increase/reduction (inverse lightning bolt transient). These parameters have been included to provide a complete description of the transient behaviour of an output power transient controlled OA. The test definition defined here are applicable if the amplifier is an OFA or an alternative OA. However, the description in Annex A of this document concentrates on the physical performance of an OFA and provides a detailed description of the behaviour of OFA; it does not give a similar description of other OA types. Keywords: output power controlled optically amplified elementary sub-systems, optical fibre amplifiers, rare-earth dopants This publication is to be read in conjunction with /2.
PDF Catalog
PDF Pages | PDF Title |
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4 | European foreword Endorsement notice |
5 | Annex ZA (normative) Normative references to international publications with their corresponding European publications |
6 | CONTENTS |
7 | FOREWORD |
9 | 1 Scope 2 Normative references |
10 | 3 Terms, definitions and abbreviations 3.1 Terms and definitions |
11 | 3.2 Abbreviations 4 Apparatus 4.1 Test set-up |
12 | 4.2 Characteristics of test equipment Figures Figure 1 – Power transient test set-up |
13 | 5 Test sample 6 Procedure 6.1 Test preparation 6.2 Test conditions |
14 | 7 Calculations Tables Table 1 – Examples of transient control measurement test conditions |
15 | 8 Test results 8.1 Test settings Figure 2 – OA output power transient response of a) input power increase |
16 | 8.2 Test data |
17 | Annex A (informative) Overview of power transient events in single channel EDFA A.1 Background A.2 Characteristic input power behaviour |
18 | Figure A.1 – Example OA input power transient cases for a receiver application |
19 | A.3 Parameters for characterizing transient behaviour Figure A.2 – Input power measurement parameters fora) input power increase and b) input power decrease |
20 | Figure A.3 – OA output power transient response of a) input power increase and b) input power decrease |
21 | Annex B (informative) Background on power transient phenomena in a single channel EDFA B.1 Amplifier chains in optical networks B.2 Typical optical amplifier design |
23 | B.3 Approaches to address detection errors |
25 | Figure B.1 – Transient response to a) input power drop (inverse step transient) with transient control, b) deactivated (constant pump power), and c) activated (power control) |
26 | Figure B.2 – Transient response to a) input power rise (step transient) with transient control, b) deactivated (constant pump power), and c) activated (power control) |
27 | Annex C (informative) Slew rate effect on transient gain response |
28 | Bibliography |