Fiber Optics
Ternary PIN Photodiode
SRD00214x
SRD00215x
Features
• InGaAs/InP PIN photodiode
• Designed for applications in fiber-optics
communication systems
• Sensitive receiver for 2nd and 3rd optical window
(1300 nm and 1550 nm)
• Suitable for bit rates up to 2.5 Gbit/s
• For singlemode and multimode applications
SONET OC-1...OC-48, SDH STM-1...STM-16
• Low junction and low package capacitance
• Fast switching times
• Low dark current
• Excellent noise immunity
• High reverse current stability from planar structure
• Hermetically sealed TO46 package
Data Sheet
1
2001-12-01
SRD00214x
SRD00215x
Description
Description
The Infineon optical receiver module has been designed for use in optical networks and
is suitable for bit rates up to max. 2.5 Gbit/s if used without any TIA.
The optical receiver module uses a high-speed PIN photodetector optional coupled with
a hybrid low noise transimpedance amplifier (PIN-TIA). The optical receiver photodiode
can be used for 1310 nm or 1550 nm optical communications.
The PIN photodiode is made of InGaAs/InP and has an active diameter of 75 µm. The
function of the PIN and PIN-TIA optical receiver module is to detect input optical power,
to transduce the incident radiation into current (PIN) and then to convert the current into
a voltage (PIN-TIA).
The low input noise current density of the used transimpedance amplifiers in PIN-TIA’s
provides the optical receiver module, when used with appropriate filtering, with ample
sensitivity for realizing minimum input power requirements. Designers of optical
receivers can use the module in any application that benefits from integration of the
photodiode and TIA into a TO coaxial package. Typical for such applications are
receivers for digital crossconnects, digital loop carriers, add/drop-multiplexers and
optical network units.
Last but not least the fast switching times, low dark currents and the packaging in a
compact and hermetically sealed TO46 make the optical receivers usable in many other
fiber optic receiver applications. One application is the use in a Compact realization of a
transceiver in one module like the so called BIDI
®
(Figure
2).
Beam Splitter
Glass Lens
TO-
Laser
Fiber
TO-Detector
Figure 2
Compact Realization of the Transceiver in One Module
Data Sheet
3
2001-12-01
SRD00214x
SRD00215x
Technical Data
Technical Data
All data refer to the full operating temperature range unless otherwise specified.
Absolute Maximum Ratings
Parameter
Module
Operating temperature range at case
Storage temperature range
Soldering temperature (
t
max
= 10 s,
2 mm distance from bottom edge of case)
Receiver Diode
Reverse Voltage
Forward Current
Optical power into the optical port
Symbol
Limit Values
min.
max.
–40
–40
85
85
260
Unit
T
C
T
stg
T
S
°C
V
R
I
F
P
port
20
10
1
V
mA
mW
Receiver Diode Electro-Optical Characteristics
Parameter
Spectral sensitivity
V
R
= –2 V,
P
opt
= 1 µW
Change in Spectral Sensitivity in
Operating Temperature Range
Dark current
V
R
= 2 V,
P
opt
= 0 mW
Symbol
min.
0.8
Limit Values
typ.
max.
0.9
0.2
5
50
1
300
Unit
A/W
%/K
nA
pF
ps
S
1310nm
S
1550nm
∆
S
I
D 25°C
I
D 85°C
C
Total Capacitance
V
R
= 3 V,
f
= 1 MHz,
V
RF
= 30 mV
Rise and fall time (10%...90%)
t
r
,
t
f
V
R
= 5 V,
P
opt
= (0.1...1) mW, 50
Ω
Cut Off Frequency
f
3dB
λ
= 1310 nm,
V
R
= 5 V, 50
Ω
Return Loss,
λ
= 1310 nm
RL
End of Life Time Characteristics
Parameter
0.8
200
1
–27
GHz
dB
Symbol
Detector Dark Current,
V
R
= 2 V,
T
=
T
max
Data Sheet
4
I
R
Limit Values
min.
max.
400
Unit
nA
2001-12-01
SRD00214x
SRD00215x
Fiber Data
Fiber Data
The mechanical fiber characteristics are described in the following table.
Fiber Characteristics
Parameter
min.
Mode Field Diameter
Cladding Diameter
Mode Field/Cladding Concentricity Error
Cladding Non-circularity
Mode Field Non-circularity
Cut off Wavelength
Jacket Diameter
Bending Radius
Tensile Strength Fiber Case
Length
1270
0.8
30
5
0.8
1.2
N
m
1
123
Limit Values
typ.
50
125
127
1
2
6
nm
mm
%
max.
µm
Unit
Data Sheet
5
2001-12-01
Embedded System
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