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GB/T 28504.4-2025Rare earth doped optical fibre - Part 4: Characteristics of erbium-doped optical fibre (English PDF)

掺稀土光纤　第4部分：掺铒光纤特性

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 31, 2025

Implementation date

July 1, 2026

Scope

GB/T 28504.4-2025 is the English-translated version of 掺稀土光纤　第4部分：掺铒光纤特性.

GB/T 28504.4-2025 is the Chinese standard "Rare earth doped optical fibre - Part 4: Characteristics of erbium-doped optical fibre". Its scope clause reads: This document specifies the classification, geometry, and performance requirements of erbium-doped optical fibers, and describes the corresponding test methods.

This document applies to erbium-doped fibers used in fiber amplifiers, fiber lasers, and spontaneous emission light source products. Its clauses include terms and definitions.

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Document preview — GB/T 28504.4-2025

National Standard of the People's Republic of China

ICS: 33.180.10
Classification: M 33

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
Introduction
1.Scope
2 Normative References
3.Terms and Definitions
4.Classification and Model Specifications
4.1 Classification
4.2 Model Specifications
5 Requirements and Test Methods
5.1 Geometric Dimensions
5.2 Optical Performance
5.3 Mechanical Properties
5.4 Environmental Performance
5.5 Delivery Length
Appendix A (Normative) Methods for Measuring Absorption Coefficient

1 Scope

This document specifies the classification, geometry, and performance requirements of erbium-doped optical fibers, and describes the corresponding test methods.

This document applies to erbium-doped fibers used in fiber amplifiers, fiber lasers, and spontaneous emission light source products.

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 14733.12 Telecommunications Terminology. Optical Fiber Communication

GB/T 15972.20 Fiber Optic Test Methods Specification Part 20.Measurement Methods and Test Procedures for Dimensional Parameters Fiber Optic Geometry parameter

GB/T 15972.21 Fiber Optic Testing Methods - Part 21.Measurement Methods and Test Procedures for Dimensional Parameters; Coating Geometry parameter

GB/T 15972.30 Fiber Optic Test Methods Specification Part 30.Measurement Methods and Test Procedures for Mechanical Properties - Fiber Optic Screening test

GB/T 15972.32 Fiber Optic Testing Methods - Part 32.Measurement Methods and Test Procedures for Mechanical Properties; Coatings peeling

GB/T 15972.33 Fiber Optic Testing Methods - Part 33.Measurement Methods and Test Procedures for Mechanical Properties - Stress Corrosion Sensitivity

Sensitive parameters

GB/T 15972.34 Fiber Optic Test Methods Specification Part 34.Measurement Methods and Test Procedures for Mechanical Properties - Fiber Optic Warp

GB/T 15972.40 Fiber Optic Test Methods Specification Part 40.Measurement Methods and Test Procedures for Transmission Characteristics - Attenuation

GB/T 15972.43 Fiber Optic Test Methods Specification Part 43.Measurement Methods and Test Procedures for Transmission Characteristics Numerical Aperture

GB/T 15972.44 Fiber Optic Testing Methods Specification Part 44.Measurement Methods and Test Procedures for Transmission and Optical Characteristics

Sequence cutoff wavelength

GB/T 15972.45 Fiber Optic Test Methods Specification Part 45.Measurement Methods and Test Procedures for Transmission Characteristics Mode Field Diameter

GB/T 15972.47 Fiber Optic Test Methods Specification Part 47.Measurement Methods and Test Procedures for Transmission Characteristics Macro Bending Loss

GB/T 15972.50 Fiber Optic Test Methods Specification Part 50.Environmental Performance Measurement Methods and Test Procedures - Constant Damp and Heat

GB/T 15972.52 Fiber Optic Testing Methods - Part 52.Environmental Performance Measurement Methods and Test Procedures - Temperature Cycling

GB/T 15972.53 Fiber Optic Testing Methods - Part 53.Environmental Performance Measurement Methods and Test Procedures - Immersion

3 Terms and Definitions

The terms and definitions defined in GB/T 14733.12 and the following terms and definitions apply to this document.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 13 pages — is available in the English PDF.

Referenced standards

Normative references

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