IEC 61300-3-53:2020 PDF

Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-53: Examinations and measurements - Encircled angular flux (EAF) measurement method based on two-dimensional far field data from multimode waveguide (including fibre)

First page of standard IEC 61300-3-53:2020

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Title (English):

IEC 61300-3-53:2020

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 71
Publication date:: December 15, 2020
Edition:: IEC IS 61300 edition 2 version 1
ICS:: 33.180.20

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Description (English):

IEC 61300-3-53:2020 defines the encircled angular flux measurement of multimode waveguide light sources, in which most of the transverse modes are excited. The term "waveguide" is understood to include both channel waveguides and optical fibres but not slab waveguides. The applicable fibre types are the followings: - A1 specified in IEC 60793-2-10; - A3 specified in IEC 60793-2-30; - A4 specified in IEC 60793-2-40. This second edition cancels and replaces the first edition in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - the scope of the applicable wave guides, and graded index multimode optical wave guide and fibre have been included; - the structure of 5.3 has been rearranged; - Annex C and Annex D have been added. The contents of the corrigendum of June 2023 have been included in this copy.

Technical details

Technical committee: SC 86B - Fibre optic interconnecting devices and passive components
SKU: IEC 61300-3-53:2020

Abstract

Overview

IEC 61300-3-53:2020 specifies a standardized method for measuring Encircled Angular Flux (EAF) of step-index multimode waveguides (including optical fibres) using two‑dimensional far‑field data. The standard applies to multimode waveguides where most transverse modes are excited and covers channel waveguides and fibres (but not slab waveguides). This second edition (2020) replaces the 2015 edition, adds graded‑index multimode waveguides to the scope, reorganizes measurement method content, and includes new Annexes C and D; the June 2023 corrigendum is incorporated.

Key topics and technical requirements

Measurement principle: Calculation of EAF from two‑dimensional far‑field intensity distributions to quantify angular power distribution of multimode sources.
Applicable fibre types: Waveguides/fibres defined as A1 (IEC 60793‑2‑10), A3 (IEC 60793‑2‑30) and A4 (IEC 60793‑2‑40).
Measurement methods:
- Method 1 - fθ lens imaging: Uses an fθ lens and camera to map angular flux to an image sensor.
- Method 2 - Direct imaging: Uses integrating spheres, single‑mode fibre scanning or imaging devices to capture far‑field power distribution.
Equipment and calibration: Requirements for micro‑positioners, far‑field optical systems, cameras/detectors, power meters, calibration light sources and geometric calibration procedures.
Data processing: Background noise removal, optical/mechanical centre determination, coordinate conversion (x‑y to polar), and computation of encircled angular flux curves.
Uncertainty and artifacts: Consideration of CCD shading effects (Annex C), system recommendations (Annexes A and B) and a template compliance test using defined launch optics (Annex D).
Results and reporting: Standard EAF charts and a list of information provided with each measurement and additional data available on request.

Applications and users

IEC 61300-3-53 is practical for:

Fibre and waveguide manufacturers - validating modal output and launch conditions.
Component and connector test labs - specifying and verifying angular power distributions for passive components.
Optical system designers and OEMs - ensuring compatibility of multimode sources with receivers and modal launch specifications.
Telecom and datacom test engineers - assessing link behavior sensitive to modal distribution and modal bandwidth effects.
Standards bodies and conformity assessment organizations - harmonized test method for performance claims and compliance testing.

Practical use cases include characterizing light source launch conditions, troubleshooting modal‑dependent loss, and verifying component performance under defined angular flux conditions.

Related standards

IEC 61300 series - general fibre optic interconnecting devices and basic test procedures.
IEC 60793‑2‑10, IEC 60793‑2‑30, IEC 60793‑2‑40 - referenced fibre type specifications (A1, A3, A4).

Keywords: IEC 61300-3-53, Encircled Angular Flux (EAF), EAF measurement, multimode waveguide, far field data, fibre optics testing, fθ lens, direct imaging, step index multimode.

Related standards

Standards mentioned in the description

Abstract

Overview

Key topics and technical requirements

Measurement principle: Calculation of EAF from two‑dimensional far‑field intensity distributions to quantify angular power distribution of multimode sources.
Applicable fibre types: Waveguides/fibres defined as A1 (IEC 60793‑2‑10), A3 (IEC 60793‑2‑30) and A4 (IEC 60793‑2‑40).
Measurement methods:
- Method 1 - fθ lens imaging: Uses an fθ lens and camera to map angular flux to an image sensor.
- Method 2 - Direct imaging: Uses integrating spheres, single‑mode fibre scanning or imaging devices to capture far‑field power distribution.
Equipment and calibration: Requirements for micro‑positioners, far‑field optical systems, cameras/detectors, power meters, calibration light sources and geometric calibration procedures.
Data processing: Background noise removal, optical/mechanical centre determination, coordinate conversion (x‑y to polar), and computation of encircled angular flux curves.
Uncertainty and artifacts: Consideration of CCD shading effects (Annex C), system recommendations (Annexes A and B) and a template compliance test using defined launch optics (Annex D).
Results and reporting: Standard EAF charts and a list of information provided with each measurement and additional data available on request.

Applications and users

IEC 61300-3-53 is practical for:

Fibre and waveguide manufacturers - validating modal output and launch conditions.
Component and connector test labs - specifying and verifying angular power distributions for passive components.
Optical system designers and OEMs - ensuring compatibility of multimode sources with receivers and modal launch specifications.
Telecom and datacom test engineers - assessing link behavior sensitive to modal distribution and modal bandwidth effects.
Standards bodies and conformity assessment organizations - harmonized test method for performance claims and compliance testing.

Practical use cases include characterizing light source launch conditions, troubleshooting modal‑dependent loss, and verifying component performance under defined angular flux conditions.

Related standards

IEC 61300 series - general fibre optic interconnecting devices and basic test procedures.
IEC 60793‑2‑10, IEC 60793‑2‑30, IEC 60793‑2‑40 - referenced fibre type specifications (A1, A3, A4).

Keywords: IEC 61300-3-53, Encircled Angular Flux (EAF), EAF measurement, multimode waveguide, far field data, fibre optics testing, fθ lens, direct imaging, step index multimode.

IEC 61300-3-53:2020 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Applications and users

Related standards

Related standards

Abstract

Overview

Key topics and technical requirements

Applications and users

Related standards

Related standards

Optical fibres - Part 2-10: Product specifications - Sectional specification for category A1 multimode fibres

Optical fibres - Part 2-30: Product specifications - Sectional specification for category A3 multimode fibres

Optical fibres - Part 2-40: Product specifications - Sectional specification for category A4 multimode fibres

Corrigendum 1 - Fibre optic interconnecting devices and passive components - Basic test and measurement proce…

Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-1…