Product Bulletin
Single Mode Single Window
Monolithic Fiber Coupler
1x3, 1x4
Narrow Band ±10nm
The Unifuse™ monolithic, single-fusion couplers
are highly stable for multi-port, optical signal
splitting. They have very good uniformity, low
excess loss, and very low polarization sensitivity.
Extremely compact, these products are produced
using a unique fabrication method and designed
for stand alone use or in a cascaded system.
Key Features
Highly compact package
Highly reliable due to proprietary technology
Low excess loss
Excellent uniformity
Applications
Multi-channel telecommunication systems
CATV and access
SMMC | 2
1x3 Model Wavelength Dependence
Coupling Ratio/Insertion Loss Conversion Chart for 1x3 Model
Ordering Coupling Ratio Port Port Port PDL for
Code Insertion Loss Insertion Loss Insertion Loss all ports
Maximum Maximum Maximum Maximum
10 45/10/45 4.0 dB 11.0 dB 4.0 dB 0.1 dB
20 40/20/40 4.5 dB 7.6 dB 4.5 dB 0.1 dB
30 35/30/35 5.0 dB 5.8 dB 5.0 dB 0.1 dB
33 33/33/33 5.3 dB 5.3 dB 5.3 dB 0.1 dB
40 30/40/30 5.7 dB 4.5 dB 5.7 dB 0.1 dB
50 25/50/25 6.6 dB 3.6 dB 6.6 dB 0.1 dB
60 20/60/20 7.4 dB 2.7 dB 7.4 dB 0.1 dB
70 15/70/15 9.2 dB 2.0 dB 9.2 dB 0.1 dB
80 10/80/10 11.0 dB 1.4 dB 11.0 dB 0.1 dB
90 5/95/5 14.8 dB 0.6 dB 14.8 dB 0.15 dB
96 2/96/2 19.5 dB 0.4 dB 19.5 dB 0.15 dB
98 1/98/1 22.0 dB 0.4 dB 22.0 dB 0.15 dB
1
2
3
Port
Port
Port
Input
Output
90.0 mm
17.8 mm
2.0 mm
(2x) Ø2.0 mm
(4x) Ø3.0 mm
3.5 mm
3.4 mm
Typ.
8.89 mm
7.5 mm
44.5 mm
(2x) R2.5 mm
22.8 mm
Note: 3 mm cable shown
Package Dimensions: 1x3 Model, H-Package
1580 1600
6
5.5
5
4.5
4
3.51500 1520 1540 1560
WAVELENGTH (nm)
INSERTION LOSS (dB)
6.5
7
Port 1
Port 2
Port 3
SMMC | 3
Specifications
Parameter 1x3 21x4
Operating wavelength 980, 1310, 1480, 1550, 1590 nm 980, 1310, 1480, 1550, 1590 nm
Insertion loss (without connectors) Maximum 5.3 dB 6.8 dB
Excess loss (without connectors) Typical 0.15 dB 0.3 dB
Uniformity Maximum 0.8 dB 1.0 dB
Polarization dependent loss Maximum 0.1 dB 0.1 dB
Optical return loss Minimum 50 dB 50 dB
Directivity Minimum 50 dB 50 dB
Temperature coefficient Typical 0.003 dB/°C 0.003 dB/°C
Package dimensions -- S package (D x L) 3.0 x 54 mm 4.0 x 60 mm
-- L package (D x L) 3.6 x 70 mm 4.0 x 70 mm
-- H package (L x W x H) 90 x 17.8 x 7.5 mm 100 x 26 x 8.0 mm
Operating Temperature 1-40 to 85 °C -40 to 85 °C
Storage Temperature 1-50 to 85 °C -50 to 85 °C
1. -20 to +70 °C for 3.0 mm cable.
2. Asymmetrical coupling ratio is also available for 1x3 coupler, see Table of Conversion Chart for 1x3 model.
All information contained herein is believed to be accurate and is subject to change without notice. No responsibility is assumed for
its use. JDS Uniphase Corporation, its subsidiaries and affiliates, or manufacturer, reserve the right to make changes, without notice, to
product design, product components, and product manufacturing methods. Some specific combinations of options may not be
available. Please contact JDS Uniphase for more information. ©JDS Uniphase Corporation. All rights reserved.
10113912 Rev. 001
U.S. and Canada Toll Free: 877-550-JDSU
www.jdsuniphase.com
SMMC | 4
Ordering Information
Indicate your requirements by selecting one option from each configuration table. Please print the corresponding codes in the
available boxes to form your part number. For more information on this or other products and their availability, please
contact your JDS Uniphase account manager, or call 1-877-550-JDSU toll free in the U.S. and Canada, or visit
www.jdsuniphase.com.
Sample: SMMC23100S211
SMF-28 is a registered trademark of Corning Incorporated.
PureMode is a registered trademark of Corning Incorporated.
ST is a registered trademark of Lucent Technologies.
1. Standard.
2. Insertion loss and return loss depend on
connector type.
Code Connector2
0 No connector1
1 FC/PC
2 FC/SPC
3 FC/APC
4 SC/SPC
5 SC/APC
7D4
8ST
9 FC/UPC
A SC/UPC
B LC/PC
DMU
SMMC
Code Wavelength
2 1550 nm
4 1480 nm
5 1310 nm
7 980 nm
L 1590 nm
Code Fiber Length
1 1 meter1
2 2 meters
3 3 meters
4 0.5 meter
5 1.5 meters
Code Coupling Ratio
(see ordering code on
previous page)
00 even
10 45/10/45
20 40/20/40
: :
96 2/96/2
98 1/98/1
Code Ports
3 1x3
5 1x4
Code Fiber Type
2 Corning SMF-28
A Corning PureMode HI-1060
F Corning PureMode HI-980
Code Package
S 250 µm fiber
L 900 µm loose tube
H 3.0 mm cable
0
