International Standards and Conformity Assessment for all electrical, electronic and related technologies



Reference EN 61300-3-31:2003
Title Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-31: Examinations and measurements - Coupled power ratio measurement for fibre optic sources
Project Number 14928
Abstract/Scope Provides the method to measure the coupled power ratio (CPR) coefficient. The CPR coefficient may be measured at both 850 nm and 1 300 nm wavelengths. CPR measurements are used to characterise optical sources and to standardize the launch conditions for measurements of attenuation on multimode fibres and inseration loss according to EN 61300-3-4.


Current Stage code 9598
Current Stage code date 2009-10-01
Current Stage code deadline  
Deadline date for vote  


Order Voucher  


IEC Technical Body IEC/SC 86B
Reference Document IEC 61300-3-31:2003 (EQV)
ICS 33.180.20 - Fibre optic interconnecting devices
Keywords Fibre optic; Interconnecting device; Passive component; Power ratio
Note D135/C169: Not withdrawn (Publication referenced in various IEEE standards)
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
9598 2009-10-01    
9561 2009-08-27 2009-10-01  
9560 2009-07-13 2009-07-27  
9520 2009-05-08 2009-07-10  
9500 2009-04-22 2009-05-22  
6060 2003-04-08 2003-12-01  
5099 2003-03-01 2003-07-01  
5061 2003-01-27 2003-03-01  
5020 2002-10-18 2003-01-10  
4099 2002-10-15 2002-10-18  
4020 2001-12-14 2002-05-17  
3090 2001-12-11 2001-12-14  

Implementation Dates

date of Ratification (DOR) (1) 2003-03-01
date of Availability (DAV) (2) 2003-04-08
date of Announcement (DOA) (3) 2003-06-01
date of Publication (DOP) (4) 2003-12-01
date of Withdrawal (DOW) (5) 2006-03-01


Superseded by  
Normative reference (6) IEC 60793-1-2:1995
EN 61300-3-4:2001

(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved

(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat

(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level

(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement

(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn

(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.