Optical Amplifier Platform, 1724-Type
Erbium-Doped Fiber Amplifier (W Series)
Data Sheet, Rev. 1
September 2001
Block Diagram
OPTICAL
INPUT
SIGNAL
OPTICAL GAIN
OPTICAL
OUTPUT
SIGNAL
INPUT TAP
OUTPUT TAP
PD #1
INPUT POWER
MONITOR
PD #2
OUTPUT POWER
MONITOR
MICROCONTROLLER
Figure 1. W1724-Type EDFA Block Diagram
1-904 (C)
Pin Information
Table 1. Pin Descriptions for a Microcontrolled (Full) Amplifier
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
Description
5.0 V (±0.25 V)
5.0 V (±0.25 V)
5.0 V (±0.25 V)
5.0 V (±0.25 V)
Reserved
1
Reserved
1
EDFA Temperature Alarm
Loss of Output Power Alarm
2
Pumps Bias Alarm
3
Pumps Temperature Alarm
4
EDFA Shutdown Override
5
5.0 V (±0.25 V)
GND
Pin
14
15
16
17
18
19
20
21
22
23
24
25
—
GND
GND
GND
GND
RS-232 OUT (TTL)
Loss of Input Power Alarm
6
Reserved
1
Amplifier Disable Input
7
RS-232 IN (TTL)
Reserved
1
5.0 V (±0.25 V)
GND
—
Description
1. Do not connect to reserved pins.
2. Normal = TTL low, alarm = TTL high if the output power falls 2 dB below the minimum value.
3. Normal = TTL low, alarm = TTL high if pump bias exceeds 95% of its end-of-life value.
4. Normal = TTL low, alarm = TTL high if pump temperature exceeds 35 °C.
5. The EDFA is equipped with an optical transient suppression feature when this pin is tied to GND. The EDFA will turn all pumps off, if the
input power is too low. Tying this pin to 5 V will disable this feature; however, damage to the optical connectors and components may occur if
the amplifier is turned on without the presence of an optical signal.
6. Normal = TTL low, alarm = TTL high if input power is less than 2 dB below minimum P
IN
.
7. Amplifier enable (all pumps are on) = TTL low, amplifier disable (all pumps are off) = TTL high.
Agere Systems Inc.
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