IEC 62803-3:2024

IEC 62803-3 ®
Edition 1.0 2024-08
INTERNATIONAL
STANDARD
colour
inside
Transmitting and receiving equipment for radiocommunication – Frequency
response of optical-to-electric conversion device in high-frequency radio-over-
fibre systems –
Part 3: Measurement method of non-linear response of optical-to-electric
converter
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IEC 62803-3 ®
Edition 1.0 2024-08
INTERNATIONAL
STANDARD
colour
inside
Transmitting and receiving equipment for radiocommunication – Frequency

response of optical-to-electric conversion device in high-frequency radio-over-

fibre systems –
Part 3: Measurement method of non-linear response of optical-to-electric

converter
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.060.20  ISBN 978-2-8322-9570-0

– 2 – IEC 62803-3:2024 © IEC 2024
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviated terms . 7
3.1 Terms and definitions . 7
3.2 Abbreviated terms . 8
4 Optical-to-electric converters . 8
4.1 Photodiode (PD) . 8
4.1.1 General . 8
4.1.2 Component parts . 8
4.1.3 Structure . 8
4.1.4 Specification of PD . 9
4.2 DFG device . 9
4.2.1 General . 9
4.2.2 Component parts . 9
4.2.3 Structure . 9
4.2.4 Specification of DFG device . 9
5 Sampling for quality control . 10
5.1 Sampling. 10
5.2 Sampling frequency . 10
6 Measurement method of non-linear response . 10
6.1 Circuit diagram . 10
6.2 Circuit description and requirements . 11
6.3 Measurement conditions . 12
6.3.1 Temperature and environment . 12
6.3.2 Warming-up of measurement equipment . 12
6.4 Principle of measurement method . 12
6.4.1 General . 12
6.4.2 Mathematical expressions of basic measurement principle . 12
6.4.3 Principle of non-linear response in optical-to-electric converters . 14
6.5 Measurement procedure . 15
6.6 Presentation of the results . 16
Annex A (informative) Example of measurement results in a photodiode . 17
A.1 Overview. 17
A.2 Example of results in the measurement procedure . 17
Bibliography . 19

Figure 1 – Optical-to-electrical conversion by photo diode . 9
Figure 2 – DFG device . 9
Figure 3 – Circuit diagram . 11
Figure 4 – Schematic illustrations of optical input, electrical output, and their
relationships to determine IIP3 and OIP3 . 15

Figure 5 – Example of frequency response of IIP3 (black) and OIP3 (red) . 16
Figure A.1 – Optical spectrum of optical signals input into the photodiode . 17
Figure A.2 – IIP3 spectrum obtained at a frequency of 6 GHz . 18
Figure A.3 – Frequency response of IIP3 . 18

– 4 – IEC 62803-3:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
TRANSMITTING AND RECEIVING EQUIPMENT FOR
RADIOCOMMUNICATION – FREQUENCY RESPONSE OF
OPTICAL‑TO‑ELECTRIC CONVERSION DEVICE IN
HIGH-FREQUENCY RADIO-OVER-FIBRE SYSTEMS –

Part 3: Measurement method of non-linear response
of optical-to-electric converter

FOREWORD
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IEC 62803-3 has been prepared by IEC technical committee 103: Transmitting and receiving
equipment for radiocommunication. It is an International Standard.

The text of this International Standard is based on the following documents:
Draft Report on voting
103/270/FDIS 103/273/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts in the IEC 62803 series, published under the general title Transmitting and
receiving equipment for radiocommunication – Frequency response of optical‑to‑electric
conversion device in high-frequency radio-over-fibre systems, can be found on the IEC website.
Future documents in this series will carry the new general title as cited above. Titles of existing
documents in this series will be updated at the time of the next edition.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
...