1、 Recommendation ITU-R BT.1367-2 (10/2015) Serial digital fibre transmission system for signals conforming to Recommendations ITU-R BT.656, ITU-R BT.799, ITU-R BT.1120 and ITU-R BT.2077 (Part 3) BT Series Broadcasting service (television) ii Rec. ITU-R BT.1367-2 Foreword The role of the Radiocommunic
2、ation Sector is to ensure the rational, equitable, efficient and economical use of the radio-frequency spectrum by all radiocommunication services, including satellite services, and carry out studies without limit of frequency range on the basis of which Recommendations are adopted. The regulatory a
3、nd policy functions of the Radiocommunication Sector are performed by World and Regional Radiocommunication Conferences and Radiocommunication Assemblies supported by Study Groups. Policy on Intellectual Property Right (IPR) ITU-R policy on IPR is described in the Common Patent Policy for ITU-T/ITU-
4、R/ISO/IEC referenced in Annex 1 of Resolution ITU-R 1. Forms to be used for the submission of patent statements and licensing declarations by patent holders are available from http:/www.itu.int/ITU-R/go/patents/en where the Guidelines for Implementation of the Common Patent Policy for ITU-T/ITU-R/IS
5、O/IEC and the ITU-R patent information database can also be found. Series of ITU-R Recommendations (Also available online at http:/www.itu.int/publ/R-REC/en) Series Title BO Satellite delivery BR Recording for production, archival and play-out; film for television BS Broadcasting service (sound) BT
6、Broadcasting service (television) F Fixed service M Mobile, radiodetermination, amateur and related satellite services P Radiowave propagation RA Radio astronomy RS Remote sensing systems S Fixed-satellite service SA Space applications and meteorology SF Frequency sharing and coordination between fi
7、xed-satellite and fixed service systems SM Spectrum management SNG Satellite news gathering TF Time signals and frequency standards emissions V Vocabulary and related subjects Note: This ITU-R Recommendation was approved in English under the procedure detailed in Resolution ITU-R 1. Electronic Publi
8、cation Geneva, 2015 ITU 2015 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without written permission of ITU. Rec. ITU-R BT.1367-2 1 RECOMMENDATION ITU-R BT.1367-2 Serial digital fibre transmission system for signals conforming to Recommendations ITU-R
9、BT.6561, ITU-R BT.7992, ITU-R BT.11203 and ITU-R BT.2077 (Part 3)4 (Question ITU-R 42/6) (1998-2007-2015) Scope This Recommendation provides information relating to the use of single and multi-mode fibre optical cable carrying the serial data defined in Recommendations ITU-R BT.656, ITU-R BT.799, IT
10、U-R BT.1120 (270 Mbit/s through 2.97 Gbit/s) and ITU-R BT.2077 (Part 3). This Recommendation also provides information concerning the connectors that should be used. Keywords Optical interface, fibre optics, optical wavelengths The ITU Radiocommunication Assembly, considering a) that the development
11、 of digital production facilities has resulted in the increasing use of serial digital interfaces; b) that a worldwide compatible digital approach will permit the development of equipment with many common features, permit operating economies and facilitate the international exchange of programmes; c
12、) that to implement the above objectives, agreement has been reached on the digital image format parameters of digital television for studios in the form of Recommendations ITU-R BT.601, ITU-R BT.709, ITU-R BT.2020, ITU-R BT.1847 and ITU-R BT.1543; d) that to implement the above objectives, agreemen
13、t has been reached on the transmission of signals in their electrical serial digital form in the form of Recommendations ITU-R BT.656, ITU-R BT.799, ITU-R BT.1120 and ITU-R BT.2077 (Part 3); e) that in the practical implementation of Recommendations ITU-R BT.656, ITU-R BT.799 and ITU-R BT.1120 it is
14、 desirable that interfaces be defined also in an optical interface form; f) that optical interfaces allow a higher noise immunity for the signals to be transmitted and the transmission of signals over greater distances than with electrical interfaces, 1 Recommendation ITU-R BT.656 Interface for digi
15、tal component video signals in 525-line and 625-line television systems operating at the 4:2:2 level of Recommendation ITU-R BT.601. 2 Recommendation ITU-R BT.799 Interface for digital component video signals in 525-line and 625-line television systems operating at the 4:4:4 level of Recommendation
16、ITU-R BT.601. 3 Recommendation ITU-R BT.1120 Digital interfaces for HDTV studio signals. 4 Recommendation ITU-R BT.2077 Real-time serial digital interfaces for UHDTV signals. 2 Rec. ITU-R BT.1367-2 recommends that where optical interfaces are required for conformity with Recommendations ITU-R BT.656
17、, ITU-R BT.799, ITU-R BT.1120 and ITU-R BT.2077 (Part 3) they should be in accordance with Annex 1. Annex 1 1 Introduction Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure e.g. interoperability or applicability) and com
18、pliance with the Recommendation is achieved when all of these mandatory provisions are met. 2 Normative references The following Standards/Recommendations contain provisions which, through reference in this text, constitute provisions of this Recommendation: Recommendation ITU-R BT.656; Recommendati
19、on ITU-R BT.799; Recommendation ITU-R BT.1120; Recommendation ITU-R BT.2077 (Part 3); IEC 61169-8 (2007-2) Part 8: Sectional specification RF coaxial connectors with inner diameter of outer conductor 6.5 mm (0.256 in) with bayonet lock-characteristic impedance 50 (type BNC), Annex A (Normative) Info
20、rmation for interface dimensions of 75 characteristic impedance connector with unspecified reflection factor5; Recommendation ITU-T G.651 (2007) Characteristics of a 50/125 m multimode graded index optical fibre cable for the optical access network; Recommendation ITU-T G.652 (2009) Characteristics
21、of a single-mode optical fibre and cable; IEC 60793-2 (2011) Part 2: Product Specifications General; IEC 60825-1 (2014), ed. 3, Safety of laser products Part 1: Equipment classification and requirements; IEC 61754-20 (2012), Fibre Optic Connector Interfaces Part 20: Type LC Connector Family. IEC 607
22、93-1-1 (2008), Measurement methods and test procedures General and guidance; IEC 60793-1-40 (2001-07), Optical fibres Part 1-40: Measurement methods and test procedures Attenuation. 5 Please note that the title of this normative reference may be misleading. This Recommendation requires the use of th
23、e 75-ohm connector defined in this reference. Rec. ITU-R BT.1367-2 3 3 Optical transmission system specifications (See Appendix G for definition of fibre terms used in this Recommendation or related normative references.) 3.1 Physical packaging and connectors of transmitter and receiver units 3.1.1
24、The preferred Tx and Rx unit optical domain connectors and their mating input and output cable sections should be LC/PC as per IEC 61754-20. Other application specific connector types, such as SC, ST, FC, MU, etc. may optionally be specified. 3.1.2 The preferred Tx and Rx unit optical domain connect
25、or polish should be PC. Other application specific connector polishes such as SPC, UPC and APC may optionally be specified, provided the polish is clearly labelled as described in 3.3.1 and 3.5. The Tx/Rx unit product documentation should include detailed specifications for the required optical conn
26、ector polish. NOTE While angle polish connectors (i.e. APC) and flat polish connectors (i.e. PC, SPC, UPC) of the same type (e.g. LC) can be mechanically mated, they are not optically compatible. System designers and system installers are therefore advised to ensure compatibility of cable, connector
27、 type and polish throughout the installation. 3.1.3 A short pigtail of single-mode fibre as specified in Recommendation ITU-T G.652 should be used to connect the Tx unit light source to its output optical connector if the light source is not physically installed and connected in a receptacle. A shor
28、t pigtail of multi-mode 50/125 fibre as specified in Recommendation ITU-T G.651 is acceptable if the Tx unit is intended exclusively for multi-mode link applications. The Tx unit or its product documentation should indicate which type of pigtail, if any, is installed. 3.1.4 A short pigtail of 62.5/1
29、25 multi-mode fibre specified in IEC 60793-2-10 should be used to connect the Rx unit optical receiver to its input optical connector if the receiver is not physically installed and connected in a receptacle. The Rx unit or its product documentation should indicate which type of pigtail, if any, is
30、installed. 3.2 Transmitter unit for low-power (short-haul), medium-power (medium-haul) or high-power (long-haul) links 3.2.1 The transmitter unit should produce an intensity-varying optical output signal in accordance with the relevant low-power (short-haul), medium-power (medium-haul) or high-power
31、 (long-haul), link parameters in Table 1, when modulated by an electrical signal defined by Recommendation ITU-R BT.656, or Recommendation ITU-R BT.799, Recommendation ITU-R BT.1120 and Recommendation ITU-R BT.2077 (Part 3). Refer to informative Appendix D for link budget calculations and informatio
32、n. 4 Rec. ITU-R BT.1367-2 TABLE 1 Transmitter unit output signal specifications High-power (long-haul) link Medium-power (medium-haul) link Low-power (short-haul) link Transmission circuit fibre(1) SM (9.0/125 m) SM (9.0/125 m) SM (9.0/125 m) MM(2) (50.0/125 m, 62.5/125 m) Light source type(3), (4)
33、Laser Laser Laser Laser or LED(5), (6) Optical wavelength 1 310 nm 40 nm 1 310 nm 40 nm 1 310 nm 40 nm 1 310 nm 40 nm 1 550 nm 40 nm 1 550 nm 40 nm 1 550 nm 40 nm 850 nm 30 nm Maximum spectral line width between half-power points for up to 3 Gbit/s interfaces 1 nm 2 nm 8 nm 30 nm Maximum spectral li
34、ne width between half-power points for 6 and 12 Gbit/s interfaces 1 nm 2 nm 4 nm 30 nm Maximum spectral line width between half-power points for 24 Gbit/s interfaces 1nm Maximum optical power for up to 3 Gbit/s interfaces(7) +10 dBm 0 dBm 3 dBm Minimum optical power for up to 3 Gbit/s interfaces(7)
35、0 dBm 3 dBm 12 dBm Maximum optical Power for 6 and 12 Gbit/s interfaces +10 dBm +0.5 dBm 3 dBm Maximum optical power for 24 Gbit/s interfaces +10 dBm +3 dBm 3 dBm Minimum optical power for 6 and 12 Gbit/s interfaces 0 dBm 3 dBm 12 dBm Minimum optical power for 24 Gbit/s interfaces 0 dBm 1 dBm 12 dBm
36、 Minimum extinction ratio(8) 5:1 (10:1 preferred) Rise and fall times for Recs ITU-R BT.656 and ITU-R BT.799(9) As defined by Recommendations ITU-R BT.656, ITU-R BT.799 for the electrical signal -. The element should have the value: H for high-power (long-haul) link applications M for medium-power (
37、medium-haul) link applications L for low-power (short-haul) link applications. The element should have the value: PC for Physical Contact (flat polished) Connectors preferred SPC for Super Physical Contact (flat polished) Connectors optional UPC for Ultra Physical Contact (flat polished) Connectors
38、optional APC for Angle Physical Contact (angle polished) Connectors optional. 6 Rec. ITU-R BT.1367-2 For each supported signal type, the element should have the value: S to indicate support of Recommendation ITU-R BT.656 P to indicate support of Recommendation ITU-R BT.799 H to indicate support of R
39、ecommendation ITU-R BT.1120 E to indicate support of Recommendation ITU-R BT.2077 (Part 3) 6G signals F to indicate support of Recommendation ITU-R BT.2077 (Part 3) 12G signals G to indicate support of Recommendation ITU-R BT.2077 (Part 3) 24G signals. The element should have the value: 850 for 850
40、nm transmitters 1 310 for 1 310 nm transmitters 1 550 for 1 550 nm transmitters 1 310-1 550 nm transmitters. NOTE 1 Equipment designed in compliance with previous revisions of this Recommendation may not conform to this label requirement. 3.4 Receiver unit The receiver unit should output an electric
41、al signal as per Recommendations ITU-R BT.656, ITU-R BT.799, ITU-R BT.1120 and ITU-R BT.2077 (Part 3) when receiving an optical signal per Table 2. TABLE 2 Optical receiver input signal specifications Transmission circuit fibre Single-mode Multi-mode(1) Minimum input overload power(2), (3) 7.5 dBm,
42、0 dBm preferred (270 Mb/s-3 Gbit/s) + 0.5 dBm (6, 12 and 24 Gbit/s) Minimum input power 20 dBm (270 Mb/s-1.5 Gbit/s) 17 dBm (3 Gbit/s) 14 dBm (6 Gbit/s) 14 dBm (12 Gbit/s) 9 dBm (24 Gbit/s) Detector damage threshold(3) +1 dBm (minimum) (1) Multi-mode fibre is not recommended for high-power (long-hau
43、l), or medium-power (medium-haul), link applications for Recommendation ITU-R BT.1120. (2) Within the receiver input range, a BER -. Rec. ITU-R BT.1367-2 7 a) The element should have the value: PC for Physical Contact (flat polished) Connectors preferred SPC for Super Physical Contact (flat polished
44、) Connectors optional UPC for Ultra Physical Contact (flat polished) Connectors optional APC for Angle Physical Contact (angle polished) Connectors optional b) For each support signal type, the element should have the value: S to indicate support of Recommendation ITU-R BT.656 P to indicate support
45、of Recommendation ITU-R BT.799 H to indicate support of Recommendation ITU-R BT.1120 E to indicate support of Recommendation ITU-R BT.2077 (Part 3) 6G signals F to indicate support of Recommendation ITU-R BT.2077 (Part 3) 12G signals G to indicate support of Recommendation ITU-R BT.2077 (Part 3) 24G
46、 signals c) The element should have the value: 850 for 850 nm transmitters 1 310 for 1 310 nm transmitters 1 550 for 1 550 nm transmitters 1 310-1 550 nm transmitters Example: A PC polished receiver that supports Recommendation ITU-R BT.656 signals at a wavelength of 850 nm only is labelled PC-S-850
47、. 3.6 Optical fibre circuit and connector specifications 3.6.1 Optical fibre type options The user may use single-mode fibre for medium-power/medium-haul applications and either single-mode or multi-mode fibre for low-power/short-haul link applications, to establish a point-to-point optical circuit
48、between the transmitter and receiver optical connectors. A point-to-point circuit may consist of one or multiple serially interconnected sections of the selected type of optical fibre in cables, jumpers, and/or patch cords. Mixing fibre types in the multiple sections of a point-to-point circuit is p
49、hysically possible, but technically unacceptable and would not be in compliance with this Recommendation. Single-mode optical fibre should comply with Recommendation ITU-T G.652 (2009; Characteristics of a single-mode Optical Fibre Cable). Multi-mode optical fibre should comply with IEC 60793-2 (2011) Optical Fibres Part 2: Product Specifications General. NOTE For multi-mode fibres, the m
