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BS EN 61290-4-1:2016:2017 Edition

BS EN 61290-4-1:2016:2017 Edition

$142.49

Optical amplifiers. Test methods – Gain transient parameters. Two-wavelength method

Published By Publication Date Number of Pages
BSI 2017 26
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This part of IEC 61290-4 applies to optical amplifiers (OAs) using active fibres (optical fibre amplifiers (OFAs)) containing rare-earth dopants including erbium-doped fibre amplifiers (EDFAs) and optically amplified elementary sub-systems. These amplifiers are commercially available and widely deployed in service provider networks.

The object of document is to provide the general background for OFA transients and related parameters, and to describe a standard test method for accurate and reliable measurement of the following transient parameters:

  1. channel addition or removal transient gain overshoot and transient net gain overshoot;

  2. channel addition or removal transient gain undershoot and transient net gain undershoot;

  3. channel addition or removal gain offset;

  4. channel addition or removal transient gain response time constant (settling time).

PDF Catalog

PDF Pages PDF Title
6 English
CONTENTS
7 FOREWORD
9 INTRODUCTION
10 1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
12 3.2 Abbreviated terms
4 Measurement apparatus
13 Figures
Figure 1 – Definitions of rise and fall times
14 Figure 2 – OFA transient gain response
15 5 Test specimen
6 Procedure
Figure 3 – Generic transient control measurement setup
16 7 Calculations
8 Test results
Tables
Table 1 – Examples of add and drop scenarios for transient control measurement
Table 2 – Typical results of transient control measurement
17 Annex A (informative) Background on transient phenomenon in optical amplifiers
18 Figure A.1 – OFA pump control for a chain of 5 OFAs and 4-fibre spans
19 Figure A.2 – EDFA spectral hole depth for different gain compression
Figure A.3 – EDFA spectral hole depth for different wavelengths
20 Annex B (informative) Slew rate effect on transient gain response
B.1 The importance of rise time and fall time of input power
B.2 Measured data and explanation
21 Figure B.1 – Transient gain response at various slew rates
Table B.1 – Transient gain response for various rise times and fall times (16 dB add or drop)
22 Figure B.2 – 16 dB add and drop (rise and fall time = 10 μs)
Figure B.3 – 16 dB add and drop (rise and fall time = 1 000 μs)
23 Bibliography

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BS EN 61290-4-1:2016
$142.49