SIST EN 2591-605:2004
(Main)Aerospace series - Elements of electrical and optical connection - Test methods - Part 605: Optical elements - Return loss
Aerospace series - Elements of electrical and optical connection - Test methods - Part 605: Optical elements - Return loss
This standard specifies a method of measuring the return loss of optical connection elements (including permanent connections) and fibre optic couplers.
It shall be used together with EN 2591-100.
Luft- und Raumfahrt - Elektrische und optische Verbindungselemente - Prüfverfahren - Teil 605: Optische Elemente - Rückstreuverluste
Diese Norm legt ein Messverfahren für die Rückstreuverluste von optischen Verbindungselementen (einschließlich dauerhaften Verbindungen) und LWL-Kopplern fest.
Sie ist in Verbindung mit EN 2591-100 anzuwenden.
Série aérospatiale - Organes de connexion électrique et optique - Méthodes d'essais - Partie 605: Organes optiques - Coefficient de réflexion
Aerospace series - Elements of electrical and optical connection - Test methods - Part 605: Optical elements - Return loss
General Information
- Status
- Published
- Publication Date
- 30-Apr-2004
- Technical Committee
- I08 - Imaginarni 08
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-May-2004
- Due Date
- 01-May-2004
- Completion Date
- 01-May-2004
Overview
EN 2591-605:2002 (Aerospace series) defines a standardized test method for measuring return loss of optical connection elements and fibre optic couplers used in aerospace electrical and optical interconnection systems. Published by CEN and prepared by AECMA, this part (605) is intended to be used together with EN 2591-100 (General test methods) and specifies the “coupler method” measurement sequence, required equipment and specimen preparation needed to produce repeatable, comparable return-loss data.
Key topics and requirements
- Scope: Measurement of return loss for optical elements, including permanent connections and fibre optic couplers, under standard test conditions.
- Specimen preparation: Fit normal accessories, terminate as per product standard, stabilise at standard conditions for 24 hours (per EN 2591-100). State cable/fibre type and length, permitted return loss (dB) and coupler characteristics.
- Required apparatus:
- Light Launch System (LLS) and Light Detector System (LDS) as defined in EN 2591-100.
- Optical fibre Y-coupler with known splitting ratio Ki,j (example: K = 0.5 for a 3 dB coupler).
- Refractive-index matching liquid for port immersion.
- Measurement method (Coupler method):
- Adjust launch conditions (spot diameter and numerical aperture), connect coupler to LLS/LDS.
- Measure baseline reflected power (Po) with the coupler port terminated in matching liquid.
- Insert the specimen and measure reflected power (P1).
- Reconfigure as specified and measure transmitted power (P2) with the relevant port immersed.
- Calculation: The reflection coefficient is derived from the measured powers P1, P2 and Po together with the coupler splitting ratio K; return loss (RL) in dB is then given by RL = -20·log10(reflection coefficient).
- Important considerations: Wavelength-dependent refractive index, accurate coupler characterization, and careful fibre handling (minimum bend radius) to avoid measurement artefacts.
Applications and users
- Aerospace manufacturers and suppliers verifying optical connector and coupler performance for aircraft and spacecraft interconnect systems.
- Test laboratories performing qualification, acceptance and production testing of optical connection elements.
- Component designers and quality engineers needing standardized, repeatable return-loss data for product specifications and compliance.
- Systems integrators ensuring reliable optical links where low reflection (high return loss) is critical for signal integrity.
Related standards
- EN 2591-100 - Aerospace series: Elements of electrical and optical connection - Test methods - Part 100: General (normative companion to EN 2591-605).
Keywords: EN 2591-605, return loss, optical elements, fibre optic couplers, aerospace series, optical connection, test methods, Light Launch System, Light Detector System, coupler method.
Frequently Asked Questions
SIST EN 2591-605:2004 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Elements of electrical and optical connection - Test methods - Part 605: Optical elements - Return loss". This standard covers: This standard specifies a method of measuring the return loss of optical connection elements (including permanent connections) and fibre optic couplers. It shall be used together with EN 2591-100.
This standard specifies a method of measuring the return loss of optical connection elements (including permanent connections) and fibre optic couplers. It shall be used together with EN 2591-100.
SIST EN 2591-605:2004 is classified under the following ICS (International Classification for Standards) categories: 49.060 - Aerospace electric equipment and systems. The ICS classification helps identify the subject area and facilitates finding related standards.
You can purchase SIST EN 2591-605:2004 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2004
Aerospace series - Elements of electrical and optical connection - Test methods -
Part 605: Optical elements - Return loss
Aerospace series - Elements of electrical and optical connection - Test methods - Part
605: Optical elements - Return loss
Luft- und Raumfahrt - Elektrische und optische Verbindungselemente - Prüfverfahren -
Teil 605: Optische Elemente - Rückstreuverluste
Série aérospatiale - Organes de connexion électrique et optique - Méthodes d'essais -
Partie 605: Organes optiques - Coefficient de réflexion
Ta slovenski standard je istoveten z: EN 2591-605:2002
ICS:
49.060 /HWDOVNDLQYHVROMVND Aerospace electric
HOHNWULþQDRSUHPDLQVLVWHPL equipment and systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 2591-605
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2002
ICS 49.060
English version
Aerospace series - Elements of electrical and optical connection
- Test methods - Part 605: Optical elements - Return loss
Série aérospatiale - Organes de connexion électrique et Luft- und Raumfahrt - Elektrische und optische
optique - Méthodes d'essais - Partie 605: Organes optiques Verbindungselemente - Prüfverfahren - Teil 605: Optische
- Coefficient de réflexion Elemente - Rückstreuverluste
This European Standard was approved by CEN on 8 February 2002.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2002 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 2591-605:2002 E
worldwide for CEN national Members.
Foreword
This document (EN 2591-605:2002) has been prepared by the European Association of Aerospace
Manufacturers (AECMA).
After enquiries and votes carried out in accordance with the rules of this Association, this Standard has
received the approval of the National Associations and the Official Services of the member countries of
AECMA, prior to its presentation to CEN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by December 2002, and conflicting national standards shall be
withdrawn at the latest by December 2002.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark,
Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway,
Portugal, Spain, Sweden, Switzerland and the United Kingdom
1 Scope
This standard specifies a method of measuring the return loss of optical con
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