Wavelength Division Multiplexers or Demultiplexers (WDM) com-
bine or separate optical signals with different wavelengths.
They are passive optical components for uni- or bidirectional
operation.
WWDMs are manufactured using the Fused Biconical Taper
tech nology (FTB) and are pure fiber-optic components.
WWDMs are multiplexers or demultiplexers for separating or
combining signals whose wavelengths are in different optical
windows.
Features
■ Low insertion loss and low excess loss
■ Multiplexing and demultiplexing of 1310nm and 1550nm
■ High return loss, i.e. no reflection-related interference with
the transmitter for analogue systems
■ High thermal, mechanical and enviromental stability to
meet the requirements of Telcordia GR-1209 and GR-1221
■ Option of manufacture to customer specifications
Applications
■ Public and private fibre-optic networks
■ Measurement systems and test equipment
■ Optical transmissions and monitoring systems
Designs
■ Supplied in various housing sizes with primary coated fib-
res, with buffered tube pigtails or reinforced cable pigtails
■ WWDMs are also available as coupling modules with diffe-
rent isolation levels
■ All connector standard types are available
For check lists and additional ordering information for our pro-
ducts visit our website or see separate data sheets.
For
a complete overview of components visit our website at www.foc-fo.com.
Components ► Couplers ► Singlemode Couplers (SM)
► Wavelength- selective Couplers (WWDM) ►
Singlemode Coupler WWDM
For application at 1310 nm and 1550 nm
Wavelength dependence of WWDM with central wavelengths
1310nm and 1550 nm
1200 1300 1400 1500 1600 1700
nm
dB
0
-5
-10
-15
-20
-25
-30
-35
FOC – fibre optical components GmbH
Barbara-McClintock-Str. 5 I 12489 Berlin, Germany
p +49 30 565507-0 I f +49 30 565507-19
w www.foc-fo.com I e info@foc-fo.de
Release 22.04.2020
Subject to modifications
DBE-COM-0086V004
Page 1 of 2
FOC Wavelength-selective Singlemode Couplers WWDM 1310nm and 1550nm
(1)
of Insertion Loss, max. 0,2dB
(2)
measured at 1310 nm and 1550nm
Type Narrowband- WDM Wideband - WDM
Standard WWDM 1310/1550
Wavelength Range [nm] 1310 /1550 ±20 1310 /1550 ±40
Possible form factors size 02, size 03, size 04, size 05, size 06
Min. Isolation [dB] 15 10
Max. Insertion Loss [dB] 0,7 0,8
Min. Directivity [dB] 55 for 1x 2, 60 for 2 x2
Min. Return Loss [dB] 55 for 1x 2, 60 for 2 x2
Polarisation Dependent Loss
(1,2)
[dB] typical 0,1
WWDM 1310/1550 modules
Wavelength Range [nm] 1310 /1550 ±20 1310 /1550 ±40
Possible form factors size 10 and above
Min. Isolation [dB] 15 30 40 50 10 18 25 30
Max. Insertion Loss [dB] 0,8 1,5 2,0 2,5 1,0 1,7 2,4 3,1
Min. Directivity [dB] 55
Min. Return Loss [dB] 55
Polarisation Dependent Loss
(1,2)
[dB] typical 0,1
Optical parameter
FOC – fibre optical components GmbH
Barbara-McClintock-Str. 5 I 12489 Berlin, Germany
p +49 30 565507-0 I f +49 30 565507-19
w www.foc-fo.com I e info@foc-fo.de
Release 22.04.2020
Subject to modifications
DBE-COM-0086V004
Page 2 of 2