Alca te l 1902 OFA
Booste r a m p lifie r with in te g ra te d e le ctron ics
Erb ium -Dop e d Fib e r Am p lifie r
De scrip tion
Five alarms are generated by the modules: loss
of input signal, loss of output signal, output
power degradation, laser over down circuitries
are set up in the electronic's module : automatic
shut clown (the output power is switched off if
there is no input power or if the temperature is
out of range), and external shut down
command.
The Alcatel 1902 OFA products belong to the
Alcatel 1900 OFA family of Optical Fiber
Amplifier (OFA) modules, designed for the third
telecommunica-tion window (1550 nm). Using
reliability proven high power 1480 nm lasers
and optimized Erbium-Doped Fiber, they
provide high gain, high output power and low
noise amplification. They incorporate a very
high degree of integration and are presented in
a compact package with connectorized pigtails.
The modules may be mounted directly into a PC
board and are, thus, ideal for optimization of
system size. The integrated electronics provide
an easy user digital interface, exempting the
designer from input & output signal controls.
The output power is kept constant through on
APC (Automatic Power Control) loop, and the
chip temperature is stabilized at + 25 ± 10 °C
with an ATC (Automatic Temperature Control)
loop.
Fe a ture s
• Bit rate transparency
• High output power
• Wide wavelength range
• Wide operating case temperature
• Built in control electronics with digital interface
• Automatic shut-down with enable
• Built in input & output signal monitoring
• Built in input & output optical isolation
• Single 1480 nm pumped
• High reliability
• Small size
Op tica l ch a ra cte ristics
Pa ra m e te r
Wavelength bandwidth
Con d ition s
Sym b ol
Min
1530
Typ ica l
Ma x
1565
Un it
nm
BW
Output power 10 dBm module
Output power 13 dBm module
Output power 16 dBm module
Noise figure
Pin > - 6 dBm
Pout
Pout
10
13
16
12
15
17
7
14
17
dBm
dBm
dBm
dB
Pin > - 6 dBm
Pin > - 6 dBm
Pout
19
1550 nm - 6 dBm input
1550 nm - 6 dBm input (ref. = + 25 °C)
1550 nm , input from -6 to + 4 dBm (ref. = + 25 °C)
NF
10
Output power temp. sensitivity
Output power regulation stability
Polarization sensitivity
ϑP/ϑT
ϑP/ϑPin
ϑP/ϑPol
R1
- 0.5
- 0.5
- 0.5
27
+ 0.5
+ 0.5
+ 0.5
dB
dB
dB
Input/output return loss
40
30
dB
Time response to shut down
Time between SD command and Pout < - 40 dBm
SDT
100
mS
(Case temperature = 0 to + 65 °C) otherwise specified
Ele ctrica l ch a ra cte ristics
Pa ra m e te r
Con d ition s
Sym b ol
Min
Typ ica l
Ma x
Un it
Positive power supply voltage
Vcc
4.75
5.25
V
Negative power supply voltage
Positive power supply current
Vee
Icc
- 5.45
- 4.9
0.9
V
A
Typ. value at + 25 °C
0.45
0.25
- 5
Negative power supply current Max. value at + 65 °C
Iee
1
A
Temperature monitoring
Offset (+ 25 °C) = 1.2 ± 0.3 V
Temp
Ipump
- 6
0.9
0
- 4
°C/V
A/V
V
Laser drive current monitoring Offset = 0 V
1
1.1
Alarms Active level
Isink < 3 mA for: LIS, LOS1, LOS2 Ibias, TOR Alarm
0.7
Alarms Non Active level
Shut down (external or automatic)
For SD and ASD
Iscr > - 0.1 mA for: LIS, LOS1, LOS2 Ibias, TOR
Command active
No alarm
ON
4.25
3.7
0
5.25
5.25
1.35
V
V
Command NON Active
OFF
V
(Case temperature = + 25 °C)
Ab solute m a xim um ra tin g s
Pa ra m e te r
Operating temperature
Sym b ol
Top
Min
0
Ma x
Un it
+ 65
+ 70
+ 350
5
°C
°C
°C
N
Storage temperature
Tstq
-40
Soldering temperature (3s)
Axial pull force on fiber (10s)
Fiber bend radius from package
Positive supply voltage
F
r
40
0
mm
V
Vcc
Vee
7
0
Negative supply voltage
- 7
V
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device.
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