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Erbium-doped fiber-amplifier - Part 2: L-band erbium-doped fiber-amplifier
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Erbium-doped fiber amplifier -- L-band Erbium-doped fiber amplifier
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Basic data
| Standard ID | GB/T 18898.2-2025 (GB/T18898.2-2025) |
| Description (Translated English) | Erbium-doped fiber-amplifier - Part 2: L-band erbium-doped fiber-amplifier |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | M33 |
| Classification of International Standard | 33.180.10 |
| Word Count Estimation | 22,291 |
| Date of Issue | 2025-10-05 |
| Date of Implementation | 2026-02-01 |
| Older Standard (superseded by this standard) | GB/T 18898.2-2008 |
| Issuing agency(ies) | State Administration for Market Regulation and Standardization Administration of China |
GB/T 18898.2-2025: Erbium-doped fiber-amplifier - Part 2: L-band erbium-doped fiber-amplifier
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 33.180.10
CCSM33
National Standards of the People's Republic of China
Replaces GB/T 18898.2-2008
Erbium-doped fiber amplifier
Part 2.L-band Erbium-Doped Fiber Amplifier
Part 2.L-banderbium-dopedfiber-amplifier
Published on 2025-10-05
Implemented on February 1, 2026
State Administration for Market Regulation
The State Administration for Standardization issued a statement.
Table of contents
Preface III
Introduction V
1.Scope 1
2 Normative References 1
3.Terms and Definitions 1
4.Abbreviations 2
5 categories 2
5.1 Classification by Application 2
5.2 Classification by Function 3
6.Technical Requirements 3
6.1 Environmental Conditions 3
6.2 Technical Requirements for Single-Channel EDFA 3
6.3 Technical Requirements for Multi-Channel EDFA 4
6.4 Appearance Requirements 6
6.5 Restricted Substances 6
6.6 Laser Safety 6
6.7 Reliability 6
6.8 Electromagnetic Compatibility 6
7.Test Methods
7.1 Test Environment 7
7.2 Test Instrument Requirements 7
7.3 Measurement of Input Power Range, Output Power Range, Maximum Total Output Power, and Operating Wavelength Range 7
7.4 Small-signal gain, gain, gain flatness, gain slope, gain ripple, and PDG measurement 7
7.5 Noise Figure and Reverse ASE Power Measurement 7
7.6 Maximum input light reflection, maximum output light reflection, maximum input light reflection tolerance, and maximum output light reflection tolerance 7
7.7 Input pump leakage power, output pump leakage power 7
7.8 Polarization Mode Dispersion (PMD) 7
7.9 Transient Performance Parameter Testing 7
7.10 Restricted Substances 9
7.11 Laser Safety 9
7.12 Appearance 9
7.13 Reliability Testing 9
7.14 Electromagnetic Compatibility Test 11
8.Inspection Rule 12
8.1 Inspection Classification 12
8.2 Factory Inspection 12
8.3 Type Testing 12
9.Marking, Packaging, Transport and Storage 13
9.1 Mark 13
9.2 Packaging 14
9.3 Transportation 14
9.4 Storage 14
Reference 15
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents".
Drafting.
This document is Part 2 of GB/T 18898 "Erbium-doped fiber optic amplifiers". GB/T 18898 has already published the following parts.
---Part 1.C-band Erbium-Doped Fiber Amplifier;
---Part 2.L-band Erbium-doped Fiber Amplifier
This document supersedes GB/T 18898.2-2008 "Erbium-Doped Fiber Amplifiers - L-Band Erbium-Doped Fiber Amplifiers", and is consistent with GB/T 18898.2-
Compared to.2008, aside from structural adjustments and editorial changes, the main technical changes are as follows.
a) Scope of application has been changed. Erbium-doped fiber amplifiers in the extended L-band have been added (see Chapter 1, Chapter 1 of the.2008 edition);
b) Erbium-doped fiber amplifiers (see 4.1 in the.2008 edition), gain cross-impregnation (see 4.25 in the.2008 edition), and channel addition/channel addition have been removed.
Remove the gain response (steady state) (see 4.28 in the.2008 edition) and channel noise figure (see 4.29 in the.2008 edition), output signal
Power (see 4.2 in the.2008 edition), maximum output signal power (see 4.3 in the.2008 edition), gain (see 4.3 in the.2008 edition)
4.4) Small-signal gain (see 4.5 in the.2008 edition), input power range (see 4.6 in the.2008 edition), output optical power range
(See 4.7 in the.2008 edition), input light reflection (see 4.8 in the.2008 edition), output light reflection (see 4.9 in the.2008 edition), noise
Sound coefficient (see 4.10 in the.2008 edition), polarization-dependent gain (see 4.11 in the.2008 edition), polarization mode dispersion (see.2008 edition)
(4.12) Maximum total output power (see 4.13 in the.2008 edition), Input pump leakage power (see 4.14 in the.2008 edition),
Output pump leakage power (see 4.15 in the.2008 edition), forward ASE power level (see 4.16 in the.2008 edition), reverse...
ASE power level (see 4.17 in the.2008 edition), maximum input light reflection tolerance (see 4.18 in the.2008 edition), output...
Maximum optical reflection tolerance (see 4.19 in the.2008 edition), operating wavelength range (see 4.20 in the.2008 edition), input reference plane (see...)
(See 4.21 in the.2008 edition), Output Reference Surface (see 4.22 in the.2008 edition), Channel Gain (see 4.23 in the.2008 edition), Multi-wavelength
Channel gain variation/inter-channel gain difference (see 4.24 in the.2008 edition), multi-channel gain variation difference/inter-channel gain variation difference (see...)
(See 4.26 in the.2008 edition), multi-channel gain slope/inter-channel gain variation rate (see 4.27 in the.2008 edition), channel signal.
Terminology and definitions for spontaneous radiated noise figure (see 4.30,.2008 edition);
c) The terms "signal optical power to total ASE power ratio" and "extended L-band" and their definitions have been added (see 3.1 and 3.2);
d) Erbium-doped fiber amplifiers for analog applications have been removed from the category, and erbium-doped fiber amplifiers for multi-channel digital transmission applications have been added.
They are divided into two categories. fixed-gain amplifiers and variable-gain amplifiers (see 5.1, 3.1 in the.2008 edition);
e) The operating temperature range, operating relative humidity, and storage temperature technical requirements for all types of EDFA have been changed (see 6.1,.2008).
(Tables 1-6 of the version)
f) The requirement for the ratio of signal optical power to total ASE power has been increased (see Table 2);
g) The forward ASE power and small-signal gain of the single-channel EDFA (see Tables 2 and 3 in the.2008 edition), output light reflection, etc., have been removed.
Parameter indicators (see Table 3 in the.2008 edition);
h) The performance parameters of the single-channel EDFA have been changed (see Table 2, Tables 1, 2, and 3 of the.2008 version);
i) The performance parameters of the multi-channel EDFA have been changed (see Table 3, Tables 4, 5, and 6 in the.2008 version);
j) Requirements for the content and placement of the sign have been added to the appearance requirements (see 6.4);
k) Added requirements for restricted substances (see 6.5);
l) Added precautions for laser safety during installation, as well as optional functions as needed (see 6.6);
m) Increased reliability requirements (see 6.7);
n) Electromagnetic compatibility requirements have been added (see 6.8);
o) A test method for hydrogen immersion has been added (see Table 4);
p) The gain and noise figure of the multi-channel erbium-doped fiber amplifier were modified (see 7.4 and 7.5, 6.5, 6.6 and 6.10 in the.2008 edition), and the offset...
Test methods for the modal dispersion parameter (see 7.8, 6.9 in the.2008 edition);
q) Added transient performance parameter testing methods (see 7.9);
r) The substitution method has been removed (see 6.11 in the.2008 edition);
s) An appearance testing method has been added (see 7.12);
t) The test methods for vibration, shock, pigtail holding force, and fiber optic torsion in the mechanical integrity test of the reliability test method have been modified.
Request the addition of requirements for fiber optic lateral tension, fiber optic bending, and sampling requirements (see 7.13, Chapter 7 of the.2008 edition);
u) The requirements for low-temperature (static) testing, high-temperature (static) testing, and damp heat testing have been removed, as has the high-temperature aging test (see the.2008 version).
7.2);
v) Added electromagnetic compatibility testing methods (see 7.14);
w) The inspection rules have been changed (see Chapter 8, Chapter 8 of the.2008 edition).
Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.
This document was proposed by the Ministry of Industry and Information Technology of the People's Republic of China.
This document is under the jurisdiction of the National Telecommunications Standardization Technical Committee (SAC/TC485).
This document was drafted by. China Information and Communication Technology Group Corporation, China Academy of Information and Communications Technology, and China Telecom Group Corporation.
Huawei Technologies Co., Ltd. and ZTE Corporation.
The main drafters of this document are. Tao Jintao, Fu Chengpeng, Song Mengyang, Le Menghui, Fu Ziwen, Wu Bingbing, Zhang Anxu, Jiang Chendi, and Wu Chengbin.
The release history of this document and the document it replaces is as follows.
---First published in.2008 as GB/T 18898.2-2008;
---This is the first revision.
Introduction
The development of information technology has led to an increasing demand for communication bandwidth. Expanding the frequency band is currently a hot technology for improving optical transmission capacity. Erbium doping...
As a core component of optical communication information technology, fiber optic amplifiers also need to be considered for expanding their operation beyond existing frequency bands.
Broadband range, improving transmission capacity. GB/T 18898 aims to specify the requirements for erbium-doped fiber amplifiers (EDFAs) in existing and extended bands.
The regulations will be standardized in various aspects. It is proposed to consist of two parts.
---Part 1.C-band Erbium-Doped Fiber Amplifiers. The purpose is to standardize the technical requirements and measurement of C-band and extended C-band EDFAs.
Test methods, reliability tests, inspection rules, as well as marking, packaging, transportation and storage.
---Part 2.L-band Erbium-Doped Fiber Amplifiers. The purpose is to standardize the technical requirements for L-band and extended L-band EDFAs.
Test methods, reliability tests, inspection rules, and marking, packaging, transportation and storage.
Erbium-doped fiber amplifier
Part 2.L-band Erbium-Doped Fiber Amplifier
1 Scope
This document provides the classification of L-band and extended L-band EDFA, and specifies the technical requirements, inspection rules, and marking, packaging, and transportation.
The corresponding test methods are described for storage and handling.
This document applies to the design, development, production, and testing of L-band and extended L-band EDFAs used in optical communication systems.
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.
For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.
This document.
GB/T 191 Pictorial Symbols for Packaging and Storage
GB/T 2828.1 Sampling Procedures for Inspection by Attributes - Part 1.Sampling Schemes Retrieved by Acceptable Quality Limit (AQL) for Lot-by-Lot Inspection
GB/T 7247.1 Safety of laser products - Part 1.Equipment classification and requirements
GB/T 9254.1-2021 Electromagnetic compatibility of information technology equipment, multimedia equipment and receivers – Part 1.Emission requirements
GB/T 15972.48 Fiber Optic Test Methods Specification Part 48.Measurement Methods and Test Procedures for Transmission and Optical Characteristics
Ordered polarization mode dispersion
GB/T 16849-2023 General Specification for Optical Amplifiers
GB/T 16850.1 Test methods for optical amplifiers – Part 1.Power and gain parameters of single-channel optical amplifiers
GB/T 16850.3 Test methods for optical amplifiers - Part 3.Noise parameters of single-channel optical amplifiers
GB/T 16850.5 Basic Specifications for Test Methods of Fiber Optic Amplifiers - Part 5.Test Methods for Reflection Parameters
GB/T 16850.6 Basic Specifications for Test Methods of Fiber Optic Amplifiers - Part 6.Test Methods for Pump Leakage Parameters
GB/T 18898.1-2021 Erbium-doped fiber amplifiers - Part 1.C-band erbium-doped fiber amplifiers
GB/T 26572 Limits for Restricted Substances in Electrical and Electronic Products
GB/T 33768-2017 Reliability Test Methods for Optoelectronic Devices for Communication
GB/T 39560 (all parts) Determination of certain substances in electronic and electrical products
SJ/T 11364-2024 Requirements for Labeling of Hazardous Substances in Electrical and Electronic Products
YD/T 1766-2016 Failure Criteria for Reliability Testing of Optical Transceiver Modules for Optical Communication
IEC 60793-2-50.2025 Optical fibers – Part 2-50.Product specifications – Class B single-mode fiber specifications
IEC 61290-10-4 Test methods for optical amplifiers – Part 10-4.Interpolation and source reduction method for multi-channel parametric spectrometers (Optical amplifiers)
3 Terms and Definitions
The terms and definitions defined in GB/T 16849-2023, as well as the following terms and definitions, apply to this document.
...
