IEC 61753-071-2:2014

IEC 61753-071-2 ®
Edition 1.0 2014-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Performance
standard –
Part 071-2: Non-connectorized single-mode fibre optic 1 × 2 and 2 × 2 spatial
switches for category C – Controlled environments

Dispositifs d'interconnexion et composants passifs à fibres optiques – Norme
de performance –
Partie 071-2: Commutateurs spatiaux optiques unimodaux 1 × 2 et 2 × 2 non
connectorisés pour la catégorie C – Environnements contrôlés

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IEC 61753-071-2 ®
Edition 1.0 2014-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Performance

standard –
Part 071-2: Non-connectorized single-mode fibre optic 1 × 2 and 2 × 2 spatial

switches for category C – Controlled environments

Dispositifs d'interconnexion et composants passifs à fibres optiques – Norme

de performance –
Partie 071-2: Commutateurs spatiaux optiques unimodaux 1 × 2 et 2 × 2 non

connectorisés pour la catégorie C – Environnements contrôlés

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX N
ICS 33.180.20 ISBN 978-2-8322-1579-1

– 2 – IEC 61753-071-2:2014 © IEC 2014
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Test conditions . 7
5 Test report . 8
6 Reference components . 8
7 Performance requirements. 8
7.1 Dimensions . 8
7.2 Test details and requirements . 8
Annex A (normative) Sample size . 13
Bibliography . 14

Figure 1 – Configuration of 1 × 2 spatial switch . 6
Figure 2 – Configuration of 2 × 2 spatial switch, non-crossover type . 7
Figure 3 – Configuration of 2 × 2 spatial switch, crossover type . 7

Table 1 – Single-mode spectral bands . 8
Table 2 – Test details and requirements . 8
Table A.1 – Number of samples for each test . 13

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
PERFORMANCE STANDARD –
Part 071-2: Non-connectorized single-mode fibre optic
1 × 2 and 2 × 2 spatial switches for category C –
Controlled environments
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61753-071-2 has been prepared by subcommittee 86B: Fibre optic
interconnecting devices and passive components of IEC technical committee 86: Fibre optics.
The text of this standard is based on the following documents:
FDIS Report on voting
86B/3748/FDIS 86B/3777/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.

– 4 – IEC 61753-071-2:2014 © IEC 2014
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of IEC 61753 series, under the general title Fibre optic interconnecting
devices and passive components – Performance standard, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
PERFORMANCE STANDARD –
Part 071-2: Non-connectorized single-mode fibre optic
1 × 2 and 2 × 2 spatial switches for category C –
Controlled environments
1 Scope
This part of IEC 61753 contains the minimum initial test and measurement requirements and
severities which non-connectorized single-mode fibre optic 1 × 2 and 2 × 2 spatial switches
need to satisfy in order to be categorized as meeting the requirements of category C –
Controlled environments, as defined in Annex A of IEC 61753-1:2007.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60876-1, Fibre optic interconnecting devices and passive components – Fibre optic
spatial switches – Part 1: Generic specification
IEC 61300 (all parts), Fibre optic interconnecting devices and passive components – Basic
test and measurement procedures
IEC 61300-2-1, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-1: Tests – Vibration (sinusoidal)
IEC 61300-2-4, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-4: Tests – Fibre/cable retention
IEC 61300-2-9, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-9: Tests – Shock
IEC 61300-2-14, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-14: Tests –High optical power
IEC 61300-2-17, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-17: Tests – Cold
IEC 61300-2-18, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-18: Tests – Dry heat – High temperature endurance
IEC 61300-2-19, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-19: Tests – Damp heat (steady state)
IEC 61300-2-22, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-22: Tests – Change of temperature

– 6 – IEC 61753-071-2:2014 © IEC 2014
IEC 61300-2-42, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-42: Tests – Static side load for connectors
IEC 61300-2-44, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-42: Tests – Flexing of the strain relief of fibre optic
devices
IEC 61300-3-2, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-2: Examination and measurements – Polarization
dependent loss in a single-mode fibre optic device
IEC 61300-3-7, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-7: Examinations and measurements – Wavelength
dependence of attenuation and return loss of single mode components
IEC 61300-3-20, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-20: Examinations and measurements – Directivity of
fibre optic branching devices
IEC 61300-3-21, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-21: Examinations and measurements – Switching time
and bounce time
IEC 61300-3-50, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-50: Examinations and measurements – Crosstalk for
optical spatial switches
IEC 61753-1:2007, Fibre optic interconnecting devices and passive components performance
standard – Part 1: General and guidance for performance standards
IEC/TR 62343-6-5, Dynamic modules – Part 6-5: Investigation of operating mechanical shock
and vibration tests for dynamic modules
ITU-T G-series Recommendations: Transmission systems and media,digital systems and
networks – Supplement 39, Optical system design and engineering considerations
3 Terms and definitions
For the purposes of this document, the following terms and definitions, as well as those given
in IEC 60876-1, apply.
3.1
1 × 2 spatial switch
single-mode fibre-pigtailed 1 × 2 spatial switch as shown in Figure 1
Note 1 to entry: There is one input port and two output ports.
Outputs
Input
2 State 1
3 State 2
IEC  1577/14
Key
1, 2, and 3 show a port number.
Figure 1 – Configuration of 1 × 2 spatial switch

3.2
2 × 2 spatial switch
single-mode fibre-pigtailed 2 × 2 spatial switch as shown in Figures 2 and 3
Note 1 to entry: There are two input ports and two output ports.
Inputs Outputs
1 3 State 1
State 4
2 4
1 3 State 2
State 3
2 4
IEC  1578/14
Key
1, 2, 3 and 4 show a port number.
Figure 2 – Configuration of 2 × 2 spatial switch, non-crossover type
Inputs Outputs
1 3 State 1
State 2
2 4
IEC  1579/14
Key
1, 2, 3 and 4 show a port number.
Figure 3 – Configuration of 2 × 2 spatial switch, crossover type
3.3
operational vibration
vibration test whose relevant parameters should be monitored during the test
3.4
operational shock
shock test whose relevant parameters should be monitored during the test
4 Test conditions
Unless otherwise specified, all test methods are in accordance with the IEC 61300 series.
1 × 2 and 2 × 2 spatial switches used for each test are intended to be previously unstressed
new samples but may also be selected from previously used samples if desired. All
measurements shall be carried out under standard atmospheric conditions, unless otherwise
stated. If the device is provided with an active temperature control, this shall be set at the set-
point specified by the manufacturer.
The requirements apply to every combination of input and output port.
Table 1 is intended to provide guidance on the wavelength ranges of the various spectral
bands. It is not intended to serve as a specification. Values of operating wavelength used in
performance verification shall be specified between the customer and supplier or shall be as
defined in the manufacturer’s specification.

– 8 – IEC 61753-071-2:2014 © IEC 2014
a
Table 1 – Single-mode spectral bands
Range
Band Descriptor
nm
O-band Original 1 260 to 1 360
E-band Extended 1 360 to 1 460
S-band Short wavelength 1 460 to 1 530
C-band Conventional 1 530 to 1 565
L-band Long wavelength 1 565 to 1 625
U-band Ultralong wavelength 1 625 to 1 675
a
ITU-T Supplement 39.
5 Test report
Fully documented test reports and supporting evidence shall be prepared and be available for
inspection as evidence that the tests have been carried out and complied with.
6 Reference components
The test for these components does not require the use of reference components.
7 Performance requirements
7.1 Dimensions
Dimensions shall comply with those given in appropriate manufacturers’ drawings.
7.2 Test details and requirements
The requirements are given only for pigtailed 1 × 2 and 2 × 2 spatial switches. A minimum
length of fibre or cable of 1,5 m per port shall be included in all climatic and environmental
test chambers. The test details and requirements are shown in Table 2.
Table 2 – Test details and requirements (1 of 5)
No Tests Requirements Details
1 Insertion loss ≤ 1,0 dB Launch fibre length: ≥ 2,0 m
IEC 61300-3-7
Light source type: Unpolarized light
Test results should be
obtained under measurement
uncertainty of ± 0,1 dB
2 Crosstalk Launch fibre length:
≤ –50 dB ≥ 2,0 m
IEC 61300-3-50
Light source type: Unpolarized light
Test results should be
obtained under measurement
uncertainty of ± 1 dB
Table 2 (2 of 5)
No Tests Requirements Details
3 Return loss ≥ 50 dB Grade U Launch fibre length: ≥ 2,0 m
IEC 61300-3-7
Light source type: Unpolarized light

Test results should be
obtained under measurement
uncertainty of ± 1 dB
4 Directivity Launch fibre length:
≤ –60 dB ≥ 2,0 m
IEC 61300-3-20
Light source type: Unpolarized light
Test results should be
obtained under measurement
uncertainty of ± 1 dB
5 Switching time ≤ 10 ms Launch fibre length: ≥ 2,0 m
IEC 61300-3-21
Switching from Elapsed time when the output
isolated state to power of a specified output port
conducting state maintains between 90 % and
110 % of its steady-state value
of the output power from the
time the actuation energy is
applied.
Switching from Elapsed time when the output
conducting state to power of a specified output port
isolated state maintains between 0 % and
10 % of its steady-state value
of the output power from the
time the actuation energy is
removed
6 Polarization Launch fibre length:
≤ 0,1 dB ≥ 2,0 m
dependent loss
The allowable PDL combination
(PDL)
applies to all combination of
IEC 61300-3-2
input and output ports.
Test results should be
obtained under measurement
uncertainty of ±0,05 dB
7 High optical Before and after the test, the Optical power 300 mW
power limits of insertion loss,
Wavelength 1 550 nm
isolation and return loss of
IEC 61300-2-14
test no. 1, 2 and 3 shall be
Duration of the optical 30 min
met.
power exposure
During the test, the insertion
Temperature:
loss change is monitored.
60 °C ± 2° C
During and after the test, the
Relative humidity: +
insertion loss change shall be
93 % RH
−
within ± 0,3 dB of the initial
Note Different wavelength is
value.
acceptable when there is a
During the test, the crosstalk
negotiation between customer
change is monitored. The
and supplier
sum of the initial value and
the change of the crosstalk
shall be within the value
defined at test no. 2.
During the test, the return
loss change is monitored.
The sum of the initial value
and the change of the return
loss shall be within the value
defined at test no. 3
– 10 – IEC 61753-071-2:2014 © IEC 2014
Table 2 (3 of 5)
No Tests Requirements Details
8 Cold Before and after the test, the Temperature:
–10° C ± 2° C
limits of insertion loss,
IEC 61300-2-17
crosstalk and return loss of
Duration of exposure: 96 h
test no.1, 2 and 3 shall be
met.
The insertion loss change
after the test shall be within
± 0,3 dB of the initial value
9 High temperature Before and after the test, the Temperature:
+ 60° C ± 2° C
endurance limits of insertion loss,
crosstalk and return loss of
Duration of exposure: 96 h
IEC 61300-2-18
test no.1, 2 and 3 shall be
met.
The insertion loss change
after the test shall be within ±
0,3 dB of the initial value
10 Damp heat Before and after the test, the Temperature:
+ 40 ± 2 °C
(steady state) limits of insertion loss,
crosstalk and return loss of
IEC 61300-2-19
test no.1, 2 and 3 shall be
met.
Relative humidity: +
93 % RH
−
The insertion loss change
after the test shall be within
± 0,3 dB of the initial value
Duration of exposure: 96 h
11 Change of Before and after the test, the High temperature:
+ 60 ± 2 °C
temperature limits of insertion loss,
Low temperature: –10 ± 2 °C
crosstalk and return loss of
IEC 61300-2-22
test no.1, 2 and 3 shall be
Number of cycles: Cycles 5
met.
Duration at extreme 60 min
During and after the test, the
temperature:
insertion loss change shall
be within ± 0,3 dB of the
Rate of change: 1 °C/min
initial value.
During the test, the crosstalk
change is monitored. The
sum of the initial value and
the change of the crosstalk
shall be within the value
defined at test no.2
12 Vibration Before and after the test, the Frequency range: 5 Hz – 55 Hz
limits of insertion loss,
IEC 61300-2-1 Number of axes: 3 orthogonal axes
crosstalk and return loss of
test no.1, 2 and 3 shall be
Number of sweeps: 15 /axis
met.
Sweep rate: 1 octave/min
The insertion loss change
after the test shall be within ±
Amplitude: 0,75 mm
0,3 dB of the initial value
Table 2 (4 of 5)
No Tests Requirements Details
13 Optical fibre Before and after the test, the Tensile force: 2 N for reinforced cable
cable flexing limits of insertion loss,
Number of cycles:
30 cycles ± 90°
crosstalk and return loss of
IEC 61300-2-44
test no.1, 2 and 3 shall be
met.
The insertion loss change
after the test shall be within
± 0,3 dB of the initial value
14 Fibre/cable Before and after the test, the Magnitude and rate of
(10 ± 1) N at 5 N/s for reinforced
retention limits of insertion loss, application:
cables
crosstalk and return loss of
IEC 61300-2-4
(5,0 ± 0,5) N at 0,5 N/s for
test no.1, 2 and 3 shall be
secondary coated fibres
met.
The insertion loss change (2,0 ± 0,2) N at 0,5 N/s for primary
coated fibres
after the test shall be within ±
0,3 dB of the initial value
Duration of the test 120 s duration at 10 N
60 s duration at 2 N or 5 N
Point of application of 0,3 m from the exit point of the
tensile load: fibre / cable from the specimen.
Method of mounting: The sample shall be rigidly
mounted such that the load is only
applied to the fibre/cable retention
mechanism
15 Static side load Before and after the test, the Magnitude and 1 N for 1 h for reinforced cable
limits of insertion loss, duration of the tensile
IEC 61300-2-42 0,2 N for 5 min for secondary
crosstalk and return loss of load:
coated fibres
test no.1, 2 and 3 shall be
met.
Direction of Two mutually perpendicular
application: directions
The insertion loss change
after the test shall be within ±

0,3 dB of the initial value
16 Shock Before and after the test, the Acceleration: Components: 5 000 m/s
limits of insertion loss,
IEC 61300-2-9 Modules:
crosstalk and return loss of
test no.1, 2 and 3 shall be
0,125 kg < module mass
met.  2
≤ 0,225 kg: 2 000 m/s
The insertion loss change
0,225 kg < module mass
after the test shall be within
≤ 1 kg: 500 m/s
± 0,3 dB of the initial value
Duration: 1 ms, half sine pulse
Number of axis: 3 axes in 2 directions
Number of shocks: 2 shocks per axis, 12 shock in
total
17 Operational During the test the insertion Frequency range: 50 – 500 Hz
vibration
loss shall be within ± 0,3 dB
Condition: 2 G for three orthogonal axes
of initial value under ambient
IEC 61300-2-1
environmental conditions
Duration: 2 sweeps/direction
Sampling rate: 5 KHz
Note: The test condition is based on
IEC/TR 62343-6-5
– 12 – IEC 61753-071-2:2014 © IEC 2014
Table 2 (5 of 5)
No Tests Requirements Details
18 Operational shock During the test the insertion Condition: 40 G, 5 ms for three orthogonal
axes
loss shall be within ± 0,3 dB
IEC 61300-2-9
of original v
...