Unidirectional Integrated TAP
Monitor Array
UTMA Series
Product Description
Oplink’s Unidirectional IntegratedTap Monitor Array (UTMA) is assembled using individual Unidirec-
tional IntegratedTap 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 de-
livering low insertion loss and low dark current with high temperature stability over a wide wavelength
range. It is compact and easy to mount on a PCB board for module and network system use.Applica-
tions include DWDM channel power monitoring, optical network switching/protection monitoring,
re-configurable optical add/drop multiplexers, and gain/attenuation monitoring in amplifier 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.
Functional Diagram
Input
Output
PD
Features
Performance Specificationns
Flat and broad operating wavelength
Parameters
Specification
Unit
range
Operating Wavelength Range
2%
1260 ~ 1360
1510~1610
nm
Low insertion loss and PDL
Low dark current
≤ 0.5
≤ 0.7
≤ 1.0
≤ 0.1
≥ 45
Insertion Loss (@λop, Top, All SOP,
exclude connectors)
5%
dB
Through
10%
Various tap ratio available
Polarization Dependent Responsivity
Return Loss (exclude connector)
dB
dB
High temperature stability with
hermetically sealed photodiode
2%
5%
10 ~ 23
26 ~ 59
52 ~ 110
14 ~ 25
36 ~ 65
70 ~ 120
Monitor optical signal from one
Responsivity (relative to nominal
power at input port)
direction only
mA/W
Tapped
Monitoring
10%
Responsivity Polarization Dependence
≤ 0.15
≥ 33
≤ 5
dB
dB
nA
nA
V
1
Applications
Directivity
PD Dark Current (@ -5V bias, 70°C)
Bandwidth (50ohm, 5V, -3dB)
Reverse Voltage
EDFA and Raman amplifiers
≥ 1
Add/Drop and optical protection
PD
monitoring
≤ 20
≤ 5
Forward Current
mA
DWDM/CWDM systems
2%
5%
≤ 21
≤ 16
≤12
Input Optical Power
dBm
10%
Notes:
Conditions
Fiber Type
Operating Temperature Range
(<85%RH, Non-condensing)
1. Directivity is defined as -10 log(ℜOut→PD / ℜIn→PD
where ℜ stands for responsivity.
* All spec excluding connectors.
* The maximum IL is under all states of polarization
and within the full operating temperature and wave-
length ranges specified.
)
-0
+70
+85
°C
°C
Storage Temperature Range
(<85%RH, Non-condensing)
-40
Corning SMF-28
S0073 - R04. 20111021
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