Fiber Optics
SRD00217x, Ternary PIN Photodiode in Receptacle Package
2
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 photodetec-
tor 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 transimped-
ance amplifiers in PIN-TIA's provides the optical receiver mod-
ule, 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 ben-
efits from integration of the photodiode and TIA into a TO coax-
ial 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 (Fig. 1).
Figure 1. Compact realization of the transceiver in one
module
TECHNICAL DATA
All data refer to the full operating temperature range unless oth-
erwise specified.
Receiver Diode Electro-Optical Characteristics
End of Life Time Characteristics
FIBER DATA
The mechanical fiber characteristics are described in the follow-
ing table.
Fiber Characteristics
TO-Detector
Glass Lens
Fiber
Beam Splitter
TO-
Laser
Parameter
Symbol
Min.
Typ.
Max.
Units
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
S
1310nm
S
1550nm
S
0.8
0.9
A/W
0.2
%/K
Id
25°C
Id
85°C
C
5
50
nA
Total Capacitance
V
R
=3 V, f=1 MHz,
V
RF
=30 mV
Rise and fall time
(10%...90%)
V
R
=5 V,
P
opt
=(0.1...1) mW,
50
Cut Off Frequency
λ
=
1310 nm,
V
R
=5 V, 50
Return Loss
λ
=
1310 nm
0.8
1
pF
t
r
, t
f
200
300
ps
f
3dB
1
GHz
RL
–20
dB
Parameter
Detector Dark Current
V
R
=2 V, T=T
max
Symbol Min.
I
R
Typ.
Max.
400
Units
nA
Parameter
Min.
Typ.
Max.
Units
μ
m
Mode Field Diameter
50
Cladding Diameter
Mode Field/Cladding Concentricity
Error
Cladding Non-circularity
123
125
127
1
2
%
Mode Field Non-circularity
6
Cut off Wavelength
J acket Diameter
1270
0.8
nm
mm
1
Bending Radius
30
Tensile Strength Fiber Case
Length
5
0.8
N
m
1.2