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Near
Infrared Coupler |
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The Near
Infrared Coupler splits light at any selected wavelength from 700nm to
1150nm. Designed for applications in fibre laser, sensor and avionics
applications, the coupler utilizes G&H�s low loss fused fibre
technology. No light leaves the fibre and therefore no alignment is
required; and there are no unwanted reflections. Furthermore the output
fibre pigtails may be directly integrated into beam delivery systems.
For components and modules which combine different wavelengths within
the near infrared
region
please refer to the datasheet �Near Infrared WDM�.
Key
Features:
700 to
1150nm operation
Any
coupling ratio available
All fibre �
no alignment required
No unwanted
reflections
Low light
loss
High power
handling
Applications:
Fibre
lasers
Sensors
Avionics
Biomedical
equipment
Research
Optical Specifications
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Coupling
Ratio (%)3 |
Grade |
Available
Wavelength(s) |
Available Housing Option |
Signal Path Insertion Loss (dB)1,2 |
Tap Path Insertion
Loss (dB)1,2 |
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1 |
A |
700 to 1150nm |
3,4,5,6 |
0.15 |
24.9 |
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1 |
B |
700 to 1150nm |
3,4,5,6 |
0.20 |
25.3 |
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5 |
A |
700 to 1150nm |
3,4,5,6 |
0.40 |
15.9 |
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5 |
B |
700 to 1150nm |
3,4,5,6 |
0.50 |
16.2 |
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10 |
A |
700 to 1150nm |
3,4,5,6 |
0.9 |
12.2 |
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10 |
B |
700 to 1150nm |
3,4,5,6 |
1.1 |
12.4 |
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20 |
A |
700 to 1150nm |
3,4,5,6 |
1.5 |
8.4 |
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20 |
B |
700 to 1150nm |
3,4,5,6 |
1.7 |
8.6 |
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30 |
A |
700 to 1150nm |
3,4,5,6 |
2.2 |
6.4 |
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30 |
B |
700 to 1150nm |
3,4,5,6 |
2.4 |
6.4 |
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40 |
A |
700 to 1150nm |
3,4,5,6 |
3.0 |
4.9 |
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40 |
B |
700 to 1150nm |
3,4,5,6 |
3.2 |
5.1 |
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50 |
A |
700 to 1150nm |
3,4,5,6 |
3.8 |
3.8 |
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50 |
B |
700 to 1150nm |
3,4,5,6 |
4.0 |
4.0 |
1. In 2x2 couplers insertion loss is not specified for
launch through second input port P4 (coloured blue)
2. Maximum insertion loss at operating wavelength. Not
including TDL, PDL or connector losses.
3. Any coupling ratio available. Please contact us for
specifications of coupling ratios not listed.
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Parameter |
Specification |
Unit |
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Operating Wavelength |
Specified wavelength within the range 700-1150nm |
nm |
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Operating / Storage Temperature Range |
-40 to +75 / -40 to + 85 |
oC |
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Pigtail Tensile Load |
5 |
N |
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Fibre Type |
Speciality singlemode fibre |
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1. For connectorised component, operating temperature
range is �5 to +75oC.
Housing Option
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Housing Code |
Description |
1x2, 2x2 Dimension(mm) |
Pigtail |
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3 |
Regula |
3.0 (f) x 50 (L) |
Primary-coated fibre |
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4 |
f0.9 mm slim |
3.0 (f) x 60 (L) |
f0.9mm loose-tube |
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5 |
f0.9 mm semi-ruggedised |
5.0 (f) x 75 (L) |
f0.9 mm loose-tube |
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6 |
f3.0 mm fully-ruggedised |
80(L)x10(W)x8(H) |
f3.0 mm fan-out sleeving |
Configuration
Ordering Code Information
1. FFS-780K31A10 (Fused Fibre Speciality Coupler, 780nm,
50/50 coupling ratio, regular housing, 1x2, A grade, 1m pigtails, no
connectors)
2. FFS-060K31A10 (Fused Fibre Speciality Coupler, 1060nm,
50/50 coupling ratio, regular housing, 1x2, A grade, 1m pigtails, no
connectors)
1. Minimum pigtail length. Further pigtail lengths
available on request. Where connectorised, pigtail length is to
connector end face.
2. Insertion Loss in specification table does not include
connector losses.
3. Any coupling ratio available. Please contact G&H for
ordering codes of coupling ratios not listed.
4. LC connector not available for housing code 6, fully
ruggedised housing.
5. Connectors may be fitted to housing types 4, 5 and 6.
For connectorisation of housing type 3 please contact the sales office. |
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PM Coupler |
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The G&H PM Coupler enables the accurate monitoring and
splitting of optical signals in polarisation maintaining fibre.
Manufactured using industry-standard PM fibre, the PM Coupler is
available in any coupling ratio from 1% to 50%. Based on G&H�s fused
fibre technology, the PM Coupler demonstrates very low loss, high power
handling and there is no price penalty for adding a second input port.
The centre operating wavelength may be chosen from within a wide variety
of operating passbands, including 980, 1064, 1310, 14xx, 15xx and 16xx.
In common with all PM components, it is necessary to
launch into either the slow or the fast axis to maintain polarisation.
For the G&H PM Coupler, specifications are based on slow axis launch,
although fast axis versions are also available if requested.
Key Features:
All PM fibre construction
Low excess loss
High power handling
980, 1064, C, L and S bands available
Slow axis operation as standard
Fast axis operation also available
Applications:
Power monitoring of PM sources
Coherent communications
Fibre gyroscopes
High power fibre lasers
Fibre amplifiers
Optical Specifications1
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Parameter |
Specification |
Unit |
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Centre Wavelength Range |
9xx |
10xx |
1310 |
14xx |
15xx |
16xx |
nm |
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Available Wavelengths2 |
915-999 |
1000-1099 |
1310 |
1425-1499 |
1500-1599 |
1600-1650 |
nm |
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Coupling Ratio |
1/99 |
% |
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Coupling Ratio Tolerance |
+/- 0.5 |
% |
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Extinction Ratio3, Grade A |
20 |
20 |
20 |
20 |
20 |
20 |
dB |
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Extinction Ratio3, Grade B |
17 |
17 |
17 |
17 |
17 |
17 |
dB |
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Coupling Ratio |
5/95 |
% |
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Coupling Ratio Tolerance |
+/- 1.5 |
% |
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Extinction Ratio3, Grade A |
20 |
20 |
20 |
20 |
20 |
20 |
dB |
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Extinction Ratio3, Grade B |
17 |
17 |
17 |
17 |
17 |
17 |
dB |
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Coupling Ratio |
10/90 |
% |
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Coupling Ratio Tolerance |
+/- 3.0 |
% |
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Extinction Ratio3, Grade A |
20 |
20 |
20 |
20 |
20 |
20 |
dB |
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Extinction Ratio3, Grade B |
17 |
17 |
17 |
17 |
17 |
17 |
dB |
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Coupling Ratio |
33/67 |
% |
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Coupling Ratio Tolerance |
+/- 4.0 |
% |
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Extinction Ratio3, Grade A |
20 |
20 |
20 |
20 |
20 |
20 |
dB |
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Extinction Ratio3, Grade B |
17 |
17 |
17 |
17 |
17 |
17 |
dB |
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Coupling Ratio |
50/505 |
% |
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Coupling Ratio Tolerance |
+/- 5.0 |
% |
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Extinction Ratio3, Grade A |
20 |
20 |
20 |
20 |
20 |
20 |
dB |
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Extinction Ratio3, Grade B |
17 |
17 |
17 |
17 |
17 |
17 |
dB |
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Excess Loss Grade A |
0.3 |
0.3 |
0.3 |
0.3 |
0.3 |
0.3 |
dB |
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Excess Loss Grade B |
0.5 |
0.5 |
0.5 |
0.5 |
0.5 |
0.5 |
dB |
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Return Loss/Directivity |
50 |
dB |
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Pigtail Tensile Load |
5 |
N |
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Operating Temperature |
-5 to +751 |
oC |
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Storage Temperature |
-40 to +85 |
oC |
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Fibre Type |
Polarisation maintaining fibre (industry-standard
profile) |
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1. All specifications are for operation at room
temperature.
2. The centre wavelength may be selected from within the
available wavelength ranges supplied.
3. Defined for signal path P1-P2.
4. Defined for both signal path P1-P2 and tap path P1-P3.
5. Preliminary specifications.
Configuration
Ordering Code Information
Example: FFP-CK3250A10 (C band, PM Coupler, 50/50
coupling ratio, regular housing, 2x2, channel centre =1550nm, grade A,
1m pigtail, no connector)
1. Channel centre must be within the wavelength ranges
shown in the Optical Specifications table.
2. Minimum pigtail length. Other pigtail lengths are
available on request.
3. Optical specifications in specification table do not
include connector loss. Other connectors available on request.
4. Other coupling ratios available on request.
5. PM Products are manufactured using 250μm PANDA PM
fibre, 400μm PANDA PM fibre available at wavelengths higher than 1400nm. |
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PM Low
Ratio Tap Coupler |
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The G&H
Fused PM LRT, taps off low power from a signal path whilst maintaining
polarisation through the component. G&H proprietary PM manufacturing
technology provides tap ratios as low as 0.01% with ultra low loss and
high polarisation extinction ratio. The all fibre construction and
excellent loss characteristics provide exceptional reliability at high
powers. PM LRT�s also exhibit improved tap ratio stability when input
polarisation extinction ratio levels are low or fluctuating.
These high
performance parts are available at a range of wavelengths with different
fibre options. PM LRTs can therefore be readily specified in a wide
variety of applications, enabling rapid design cycles and new project
builds.
Standard
parts are available at wavelengths from 900 � 1600nm. For other
wavelengths or coupling ratios please contact the sales office.
Key
Features:
Low Loss
High PER
High power
handling
PM PANDA
Fibre on all ports
Applications:
Fibre
lasers
Instrumentation
Optical Specifications
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Parameter |
Specification3 |
Unit |
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Coupling Ratio |
0.01 |
0.1 |
1 |
5 |
10 |
% |
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Tap Insertion Loss1 |
36 -44 |
27-33 |
18.2-23 |
11.9-14.9 |
8.86-1.85 |
dB |
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Signal Insertion Loss1 |
0.3(Typ<0.1) |
0.3 (Typ<0.1) |
0.37 |
0.6 |
0.9 |
dB |
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1300 � 1600 Signal PER2 |
>20 |
dB |
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900 � 1100 Signal PER2 |
>20 |
dB |
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Return Loss |
>55 |
NA |
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Operating Wavelength4 |
Any Wavelength from 900-1100nm and 1300-1600nm |
NA |
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Housing |
Regular �3.0 x 60 (max) |
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Fibre Type |
PM PANDA Fibre |
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1. Insertion Loss at operating wavelength. Not including
TDL.
2. Devices manufactured to operate in fast axis as
standard. For use in a slow-axis system a 90� PM splice is required.
3. Specifications shown are for operation at room
temperature.
4. The centre wavelength may be selected from within the
available wavelength range supplied.
Configuration
Ordering Code Information
Sample: FPU-060N31A10 (Fused Fibre LRT, 1060nm, 0.01%
tap, Regular housing, 1x2, Grade A, 1m pigtails, No connectors)
PM Products are manufactured using 250μm PANDA PM fibre,
400μm PANDA PM fibre available at wavelengths higher than 1400nm. |
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Ultra Low
Ratio Tap Coupler |
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The Ultra
Low Ratio Tap Coupler splits a very small amount of light from a signal
path to a tap port. Tested at up to 50W optical power, it�s main
application is in the monitoring of very high power optical sources such
as fibre lasers. Low tap ratios such as 0.1%, 0.01% or 0.001% enable the
monitoring photodetector to operate without damage or saturation.
G&H
proprietary manufacturing technology provides ultra-low loss in the
signal path, thereby maximising optical power handling. Consistently
high return loss (>55dB) reduces the amount of optical power reflected
back along the input fibre. This helps the fibre laser operate in a
stable manner.
Standard
parts are available for wavelengths from 700 to 1599nm. For other
wavelengths, coupling ratios or customised fibre types please contact
the sales office.
Key
Features:
Tap ratio
up to 40dB
High return
loss
Ultra-low
signal insertion loss
High power
handling
Available
at wide variety of laser wavelengths
Custom
product
Applications:
Fibre
Lasers
RAMAN
amplifiers
High Power
EDFA
Specifications
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Parameter |
Specification |
Unit |
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Coupling Ratio |
0.1 |
0.01 |
0.1 |
% |
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Tap Insertion Loss |
30 (�3) |
40 (�4) |
50 (�5) |
dB |
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Signal Insertion Loss
1,2 |
0.1 |
dB |
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Return Loss |
≥ 55 |
dB |
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Operating Wavelength 3 |
Any selected wavelength from 700 to 1599nm |
nm |
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Housing |
Regular �3.0 x 50 |
mm |
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Operating Temperature |
-40 to 75 |
oC |
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Storage Temperature |
-40 to 85 |
oC |
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Pigtail Tensile Load |
5 |
N |
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Fibre Type 4 |
Singlemode |
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1. Maximum insertion loss at operating wavelength. Not
including TDL or PDL.
2. In 2x2 couplers insertion loss is not specified for
launch through second input port P4 (coloured blue)
3. Other wavelengths available as custom components.
Please contact the sales office.
4. For customised fibre types please contact the sales
office.
Configuration
Ordering Code
Examples:
1.
FFS-080 P32
A10 (Fused Fibre Speciality Coupler, 1080nm, 0.001% coupling ratio,
regular housing, 2x2, A grade, 1m pigtails, no connectors)
2.
FFS-550 M32
A10 (Fused Fibre Speciality Coupler, 1550nm, 0.1% coupling ratio,
regular housing, 2x2, A grade, 1m pigtails, no connectors)
1. Minimum pigtail length. Further pigtail lengths
available on request. |
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Visible
Wavelength Coupler |
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The Visible
Wavelength Coupler splits or combines light in the visible region.
Versions optimised for any wavelength within the range 450nm to 700nm
may be selected.
Designed
for applications in display systems, sensors and biomedical equipment,
the coupler utilises G&H�s low loss fused fibre technology.
No light
leaves the fibre and therefore no alignment is required; and there are
no unwanted reflections. Furthermore the output fibre pigtails may be
directly integrated into beam delivery systems.
For
components and modules which combine different wavelengths within the
visible region please refer to the datasheet �Visible Wavelength
Combiners�.
Key
Features:
Visible
wavelength operation
Any
coupling ratio available
All fibre �
no lens alignment
No unwanted
reflections
Low light
loss
High power
handling
Applications:
Visible and
display systems
Sensors
Biomedical
equipment
Research
Optical Specifications
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Coupling Ratio (%)3 |
Available Housing Option |
Grade1 |
Available Wavelength(s) |
Coupling Ratio Tolerance (%) |
Excess Loss (dB) 2 |
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10 |
3,4,5,6 |
A |
500 to 700nm |
�2 |
0.3 |
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10 |
3,4,5,6 |
B |
450 to 700nm |
�3 |
0.5 |
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20 |
3,4,5,6 |
A |
500 to 700nm |
�3 |
0.3 |
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20 |
3,4,5,6 |
B |
450 to 700nm |
�4 |
0.5 |
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30 |
3,4,5,6 |
A |
500 to 700nm |
�3 |
0.3 |
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30 |
3,4,5,6 |
B |
450 to 700nm |
�4 |
0.5 |
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40 |
3,4,5,6 |
A |
500 to 700nm |
�4 |
0.3 |
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40 |
3,4,5,6 |
B |
450 to 700nm |
�5 |
0.5 |
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50 |
3,4,5,6 |
A |
500 to 700nm |
�5 |
0.3 |
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50 |
3,4,5,6 |
B |
450 to 700nm |
�6 |
0.5 |
1. In 2x2 couplers performance is not specified for
launch through second input port P4 (coloured blue)
2. Includes fibre losses for up to 1m pigtail length.
Does not include connector losses.
3. Any coupling ratio available. Please contact us for
specifications of coupling ratios not listed.
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Parameter |
Specification |
Unit |
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Operating Wavelength |
Specified wavelength within the range 450-700nm
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nm |
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Operating/Storage Temperature Range1 |
-40 to +75 / -40 to + 85 |
oC |
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Pigtail Tensile Load |
5 |
N |
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Fibre Type |
Short wavelength speciality fibre |
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1. For connectorised component, operating temperature
range is �5 to +75oC.
Housing Option
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Housing Code |
Description |
Dimensions (mm) |
Pigtail |
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3 |
Regular |
3.0 (f) x 55 (L) max. |
Primary-coated fibre |
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4 |
f0.9 mm slim |
3.0 (f)x 76 (L) max. |
f0.9 mm loose-tube |
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5 |
f0.9 mm semi-ruggedised |
5.0 (f) x 85 (L) max. |
f0.9 mm loose-tube |
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6 |
f3.0mm fully-ruggedised |
80 (L) x 10 (W) x 8 (H) |
f3.0 mm fan-out sleeving |
Configuration1
1. 1x2 couplers for blue wavelengths i.e. <500nm are
supplied as a 2x2 with an external termination on port P4.
Ordering Code Information
Example:
FFS-G32K31A10 (Fused Fibre Speciality Coupler, 532nm,
50/50 coupling ratio, regular housing, 1x2, A
grade, 1m pigtails, no connectors)
1. Minimum pigtail length. Further pigtail lengths
available on request. Where connectorised, pigtail length is to
connector end face.
2. Excess Loss in specification table does not include
connector losses.
3. 1x2 couplers for blue wavelengths i.e. <500nm are
supplied as a 2x2 with an external termination on port P4.
4. Any coupling ratio available. Please contact G&H for
ordering codes of coupling ratios not listed.
5. LC connector not available for housing code 6, fully
ruggedised housing.
6. Connectors may be fitted to housing types 4, 5 and
6. For connectorisation of housing type 3 please contact the sales
office. |
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Combiner
WDM |
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