Unidirectional Integrated TAP
Monitor Array
UTMA Series
Product Description
Oplink’s Unidirectional Integrated Tap Monitor Array (UTMA) is assembled using
individual Unidirectional Integrated Tap Monitor (UTMS) to guarantee no optical
or electrical cross-talk among different channels. UTMS is a hybrid component
that integrates a flat spectral response of a thin-film tap with a high sensitivity PIN
photodiode for power monitoring applications.The Unidirectional feature allows
power monitoring from input port only. UTMA minimizes component assembly
costs and module footprint while increasing module design efficiency by facilitating
fiber management.
Each UTMS in the UTMA integrates the functionality of an optical coupler and a
photodiode while delivering low insertion loss and low dark current with high tem-
perature stability over a wide wavelength range. It is compact and easy to mount
on a PCB board for module and network system use.Applications include DWDM
channel power monitoring, optical network switching/protection monitoring, re-
configurable optical add/drop multiplexers, and gain/attenuation monitoring in am-
plifier systems.
Oplink can provide customized designs to meet specialized feature applications.
Also,Oplink offers modular assemblies that integrate other components to form a
full function module or subsystem.
Performance Specificationns
Features
Parameter
Specification
Units
Flat and Broad Operating Wavelength
Operating Wavelength Range
nm
dB
dB
dB
dB
1260 ~ 1360
1510 ~ 1610
Range
≤0.5
≤0.7
2%
5%
10%
Insertion Loss (@λop, Top, All
Low Insertion Loss and PDL
Low Dark Current
SOP, Exclude Connectors)1
Through
≤1.0
≤0.1
≥45
Polarization Dependent Loss
Return Loss (exclude connector)
Various Tap Ratio Available
dB
10~23
26~59
52~110
mA/W
mA/W
mA/W
dB
dB
nA
nA
2%
5%
10%
14~25
35~65
70~120
High Temperature Stability with
Responsivity (Relative to Nominal
Power at Input Port)
Hermetically Sealed Photodiode
Tapped
Monitoring
Monitor Optical Signal from One
Responsivity Polarization Dependence
≤0.15
≥33
≤ 5
≤ 1
≤20
≤ 5
≤21
≤16
≤12
Direction Only
Directivity
1
PD Dark Current (@ -5V bias, 70°C)
Bandwitch (50 ohm, 5V, -3dB)
Reverse Voltage
PD
Applications
V
mA
dBm
dBm
dBm
Forward Current
EDFA and Raman Amplifiers
2%
5%
10%
Add/Drop and Optical Protection
Input Optical Power
Monitoring
Conditions
Fiber Type
Operating Temperature Range (<85%RH,
Non-condensing)
DWDM/CWDM Systems
0
70
85
°C
Storage Temperature Range (<85%RH,
Non-condensing)
°C
-40
SMF-28
1. Directivity is defined as –10log(ℜOut→PD/ℜIn→PD) where ℜ stands for responsivity
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