COMMUNICATIONS COMPONENTS
Key Features • Ultra low pump loss
• Minimum wastage of pump power
• High EDFA output power
• Wide range of regular parts available
• Proven reliability
The JDSU fused coupler, 980 nm, enables the accurate splitting and monitoring of
pump power in erbium doped fiber amplifiers. JDSU proprietary manufacturing
technology provides uniquely low excess loss, along with low polarization and
temperature dependence for all ports.
These high performance regular parts are available in a wide variety of tap ratios,
housing and connector options and can therefore be readily specified in a wide
variety of applications, enabling rapid design cycles and new project builds.
Standard variants for 960 nm and 1060 nm may also be selected.
Reliability is assured through qualification to Telcordia GR-1221, with a field
proven FIT rate of <1.
Applications
• EDFA pump redundancy and sharing
• EDFA pump monitoring
• Fiber lasers
Fused Coupler, 980 nm
NORTH AMERICA:800 498-JDSU (5378) WEBSITE:www.jdsu.comWORLDWIDE:+800 5378-JDSU
2
FUSED COUPLER, 980 NM
Fused Coupler, 980 nm, 50/50
Insertion Loss
2.0
2.5
3.0
3.5
4.0
Wavelength (nm)
Insertion Loss P1-3
Insertion Loss P1-2
974 976 978 980 982 984 986
Insertion Loss (dB)
Configuration
1x2
2x2
P4 (Blue)
P1 (Red) COMMON (Input) P2 (Blue) SIGNAL (Output)
P3 (Red) TAP (Output)
P1 (Red) COMMON (Input) P2 (Blue) SIGNAL (Output)
P3 (Red) TAP (Output)
3
FUSED COUPLER, 980 NM
Insertion Loss
Coupling Grade Signal Path Tap Path
Ratio Insertion Loss1, 2 TDL3Insertion Loss1, 2 TDL3
(Min./Max.) Max. (Min./Max.) Max.
1% P NA/0.15 dB 0.02 dB 18.4/21.5 dB 0.20 dB
1% A NA/0.20 dB 0.02 dB 15.0/22.0 dB 0.20 dB
5% P NA/0.40 dB 0.08 dB 11.3/14.8 dB 0.15 dB
5% A NA/0.50 dB 0.08 dB 11.0/15.2 dB 0.15 dB
10% P NA/0.65 dB 0.08 dB 9.00/11.5 dB 0.13 dB
10% A NA/0.75 dB 0.08 dB 8.50/11.8 dB 0.13 dB
20% P NA/1.40 dB 0.10 dB 5.60/8.40 dB 0.10 dB
20% A NA/1.50 dB 0.10 dB 5.40/8.60 dB 0.10 dB
30% P NA/2.00 dB 0.10 dB 4.10/6.40 dB 0.10 dB
30% A NA/2.20 dB 0.10 dB 4.00/6.50 dB 0.10 dB
40% P NA/2.60 dB 0.10 dB 3.20/4.70 dB 0.10 dB
40% A NA/2.80 dB 0.10 dB 3.10/4.80 dB 0.10 dB
50% P 2.60/3.40 dB 0.10 dB 2.60/3.40 dB 0.10 dB
50% A 2.50/3.60 dB 0.10 dB 2.50/3.60 dB 0.10 dB
1. Insertion loss over operating wavelength range (not including TDL or connector losses).
2. In 2x2 couplers with a coupling ratio of 20% or lower, insertion loss is not specified for launch through second input port (P4).
3. Change in insertion loss from -5 to 75 °C.
Housing Option
Housing Code Description 1x2, 2x2 Dimensions (mm) Pigtail
2 Miniature 3.0 (Ø) x 45 (L) Primary-coated fiber
3 Regular 3.0 (Ø) x 50 (L) Primary-coated fiber
4 Ø 0.9 mm slim 3.0 (Ø) x 60 (L) Ø 0.9 mm loose-tube
5 Ø 0.9 mm semi-ruggedized 5.0 (Ø) x 75 (L) Ø 0.9 mm loose-tube
6 Ø 3.0 mm fully ruggedized 80 (L) x 10 (W) x 8 (H) Ø 3.0 mm fan-out sleeving
4
FUSED COUPLER, 980 NM
Specifications
Parameter 960 nm 980 nm 1060 nm
Operating wavelength range1955 to 965 nm 975 to 985 nm 1055 to 1065 nm
Return loss/Directivity Minimum 55 dB 55 dB 55 dB
Pigtail tensile load Maximum 5 N 5 N 5 N
Optical power handling Maximum 4 W 4 W 4 W
Operating temperature range2-40 to 75 °C -40 to 75 °C -40 to 75 °C
Storage temperature range -40 to 85 °C -40 to 85 °C -40 to 85 °C
1. For wavelengths within ±5 nm to the operating wavelength range, the worst-case changes in insertion loss and WDL are shown as follows:
tap ratio=1%, maximum insertion loss and WDL increase=0.65 dB
tap ratio=5%, maximum insertion loss and WDL increase=0.50 dB
tap ratio=10%, maximum insertion loss and WDL increase=0.40 dB
tap ratio=50%, maximum insertion loss and WDL increase=0.20 dB.
2. For connectorised components operating range is -5 to 75 °C. TDL is specified from -5 to 75 °C.
NORTH AMERICA:800 498-JDSU (5378) WEBSITE:www.jdsu.comWORLDWIDE:+800 5378-JDSU
Flexcor and SMF-28 are registered trademarks of Corning Incorporated.
LC is a registered trademark of Lucent Technologies.
Telcordia is a registered trademark of Telcordia Technologies Incorporated.
All statements, technical information and recommendations related to the products herein are based upon information believed to be
reliable or accurate. However, the accuracy or completeness thereof is not guaranteed, and no responsibility is assumed for any
inaccuracies. The user assumes all risks and liability whatsoever in connection with the use of a product or its application. JDSU reserves
the right to change at any time without notice the design, specifications, function, fit or form of its products described herein, includ-
ing withdrawal at any time of a product offered for sale herein. JDSU makes no representations that the products
herein are free from any intellectual property claims of others. Please contact JDSU for more information. JDSU and the JDSU logo are
trademarks of JDS Uniphase Corporation. Other trademarks are the property of their respective holders. ©2006 JDS Uniphase
Corporation. All rights reserved. 10135722 Rev. 005 02/06 FFC980.DS.CC.AE
Ordering Information
For more information on this or other products and their availability, please contact your local JDSU account manager or
JDSU directly at 1-800-498-JDSU (5378) in North America and +800-5378-JDSU worldwide or via e-mail at
customer.service@jdsu.com.
FUSED COUPLER, 980 NM
Code Bandwidth
N Narrowband
Code Configuration
11x2
22x2
Sample: FFC-5K31PN210
Code Passband
Wavelength
5 980 nm
8 1060 nm
F 960 nm
FFC- N
Code Coupling Ratio
11%
55%
A 10%
C 20%
E 30%
H 40%
K 50%
Code Housing
2 Miniature
3Regular
4 Ø 0.9 mm slim
5 Ø 0.9 mm
semi-ruggedized
6 Ø 3.0 mm
fully ruggedized
Code Grade
AGrade A
PPremium
Code Pigtail Length1
(Minimum)
0 0.5 meter
11 meter
Code Fiber Type
2 Lucent BFO5635-02
5 Corning Hi 1060 Flex
Code Connectors
0NONE
1FC/PC
3 FC/APC
5 SC/APC
9 FC/UPC
A SC/UPC
BLC
2
1. Other pigtail lengths are available on request.
2. Not available for housing option 6.
