V011 1-13
Erbium-Doped Fiber Amplifier (EDFA) - MD Series
Nanovation’s MD series of EDFA products is specifically designed and ideally suit-
ed for single-channel SONET/SDH, metro and access applications. They are avail-
able in Booster, Inline and Preamplifier configurations to cover the entire C-band.
The product family includes an embedded microcontroller for alarm, monitoring and
control functions, and the incorporated RS-232 inter face permits the user to
remotely program the device to suit system requirements. These EDFA products
offer outstanding optical performance and a superior low noise figure.
Features
•1530 - 1565nm operating wavelength ranges
•High optical gain and saturated output power
•Low noise figure
•Internal microcontroller for monitoring, alarm and control
functions
•Wide operating temperature and humidity ranges
•Compact packaging
•Bellcore GR-1312-CORE qualified and ISO 9001 cer tified
Applications
•High performance single channel SONET/SDH, metro and
access systems
•Booster, Inline and Preamplifier configurations
Product Description
General
The MD series of EDFA products has been specially
designed for use in optical transmission systems and
metro networks as a booster, inline, or preamplifier. A
sophisticated internal electronic control system maintains
the performance of the module, provides monitoring infor-
mation, enables the module to be set to specific opera-
tional states, and incorporates a series of alarm signals
associated with a range of potential system faults.
Optical
This module is based on an EDFA that is pumped with
pump lasers. Input and output ports are optically isolat-
ed to maintain stable operation of the amplifier. An opti-
cal splitter on the output por t taps a small amount of
light onto photodiodes to enable optical power monitor-
ing.
Operation mode
ACC (Automatic Current Control) – default
APC (Automatic Power Control) – optional
AGC (Automatic Gain Control) – per formance monitoring
Electrical
Electrical connection is through a standard DB25 male
connector.
Control System
Internal electronic circuits provide the pump lasers with
an electrical transient protected power supply and tem-
perature control. A microprocessor monitors and con-
trols the module and provides an external RS232 serial
inter face. A series of digital outputs provides a set of
alarms that indicate a range of module and system
faults.
Package
The units are housed within ver y small modules with
input and output connections through single mode fiber
pigtails and are fitted as standard with super-polished
FC/UPC or FC/APC connectors. Other types of connec-
tors are available on request.
V0111-14
Erbium-Doped Fiber Amplifier (EDFA) - MD Series
MD EDFA Typical Performance Curves
Boost Configuration
MD Series EDFA Electrical Interface
The MD series of EDFA products is equipped with a standard DB25 male connector. The functionality
of each pin is presented below:
Pin Symbol Description
1 Vcc Power Supply: +5volts DC, +/-5%, Imax=3.0 A
2 Vcc Power Supply: +5volts DC, +/-5%, Imax=3.0 A
3 Vcc Power Supply: +5volts DC, +/-5%, Imax=3.0 A
4 Vcc Power Supply: +5volts DC, +/-5%, Imax=3.0 A
5 Pout Output Power Monitor
6 Pin Input Power Monitor
7 AL1 Alarm Mode 1- Internal temperature exceeds preset value
8 AL2 Alarm Mode 2- Optical output power decreases 2dB below preset value
9 AL3 Alarm Mode 3- Pump laser current decreases 1mA below preset value
10 AL4 Alarm Mode 4- Pump laser temperature exceeds preset value
11 AL5 Alarm Mode 5- Reflected output power exceeds preset value
12 Vcc Power Supply: +5volts DC, +/-5%, Imax=3.0 A
13 GND Power supply ground / case
14 GND Power supply ground / case
15 GND Power supply ground / case
16 GND Power supply ground / case
17 GND Power supply ground / case
18 TXD RS-232 DATA OUT (TTL Levels)
19 AL6 Alarm Mode 6 – Optical input power decreases below preset value
20 N/C
21 Adis Pump laser ON/OFF toggle
22 RXD RS-232 DATA IN (TTL Levels)
23 N/C
24 Vcc Power Supply: +5volts DC, +/-5%, Imax=3.0 A
25 GND Power supply ground
V011 1-15
Erbium-Doped Fiber Amplifier (EDFA) - MD Series
TTL Input/Output Monitor and Control Logic Levels
•The TTL input and output monitor (AL1 – AL6) and control logic (Adis) levels are presented in the following table.
•The correspondence between the analog optical signal level and the analog voltage output is typical. The actual
analog sensitivity coefficients are supplied with each EDFA.
Pigtail Fiber
Outline Drawing
(all dimensions are in mm; drawings are not to scale)
Fiber Type Standard single-mode fiber
Fiber/Buffer Diameter (mm) 0.9
Pigtail Length (m) 1.0 (or user defined)
Function In/Out TTL High TTL Low
Internal Temperature Monitor (pin 7) Out Normal Alarm
Output Power Monitor (pin 8) Out Normal Alarm
Pump Laser Current Monitor (pin 9) Out Normal Alarm
Pump Laser Temperature Monitor (pin 10) Out Normal Alarm
Reflected Output Power Monitor (pin 11) Out Normal Alarm
Input Power Monitor (pin 19) Out Normal Alarm
Pump Toggle Switch (pin 21) In Pumps OFF Pumps ON
Analog Control Voltage (Within Normal Range) - Analog Output Range -
Output Power Control Voltage (pin 5) - 0~4.7 volts -
Input Power Control Voltage (pin 6) - 0~4.7 volts -
V0111-16
Erbium-Doped Fiber Amplifier (EDFA) - MD Series
Block Diagram
Optical Parameters
(over the full operating temperature range)
Absolute Maximum Ratings
(in accordance with Bellcore GR-1312-CORE)
Parameter Min. Typical Max. Unit
DC Operating Voltage +4.75 +5.0 +5.25 V
Current Consumption - 3.0 A
Operating Temperature Range 0 - 70 °C
Storage Temperature Range -25 - 85 °C
Operating Humidity Range 5 - 85 %
Parameter Minimum Typical Maximum Units Notes
Wavelength (ITU-T G.692) 1530 - 1565 nm -
-6 - - dBm Booster
Input Power -20 - - dBm Inline
-40 - - dBm Preamplifier
- - 17 dBm Booster
Saturated Output Power - - 13 dBm Inline
- - -5 dBm Preamplifier
- 20 - dB Booster
Signal Gain - 30 - dB Inline
- 30 - dB Preamplifier
Optical Isolation 30 35 - dB -
Input Return Loss 50 - - dB UPC/APC
Noise Figure 5.0 5.5 dB -
Polarization Dependent Gain - - 0.5 dB -
Polarization Mode Dispersion - - 0.2 ps -
Pump Leakage - - -30 dBm -
Reverse ASE Power - < -20 - dBm -
Power Consumption - 10 15 W -
V011 1-17
Erbium-Doped Fiber Amplifier (EDFA) - MD Series
Part Amplifier Input Power Output Power Gain Dimension
Number Type (dBm) (dBm) (dB) (mm x mm x mm)
MDB 200 17 001 Booster -6 17 23 150 x 124 x 20
MDL 300 13 001 Line -20 13 33 150 x 124 x 20
MDP 400 -5 001 Preamplifier -40 -5 35 150 x 124 x 20
Ordering Information
The following table summarizes the product options and provides examples:
To order or for additional information, please contact us at:
Phone: 1-877-919-6266
Fax: 1-734-354-0934
Web: www.nanovation.com
All data listed in this specification sheet is subjected to change without notice.
Nanovation reser ves the right to revise or update the data sheet.
Copyright 2001 by Nanovation Technologies.
M D X X X 0 X X - X X X
Connector Type
0: No connector
1: FC/UPC (standard)
2: FC/APC
3: SC/UPC
4: SC/APC
Pigtail Fiber Length
0: Standard length = 1 m (standard)
1: User specify
Fiber Type
0: Standard single-mode (standard)
1: User specify
Output Power
-5: -5 dBm
13: 13 dBm
15: 15 dBm
17: 17 dBm
Input Isolator
0: With input isolator
1: Without input isolator
Product Series
2: Booster
3: Line
4: Preamplifier
Amplifier Type
B: Booster
L: Line
P: Preamplifier
V0111-18
Erbium-Doped Fiber Amplifier (EDFA) - MD Series
Safety Information and Handling Precautions
EDFAs are class III laser products. Please read carefully the following safety information prior to handling and installing.
The signal output of the pump laser and EDFA is invisible, yet it can be of high power level
and therefore can cause damage to the eyes or skin. Please do not look at the fiber cross
section directly without protection devices.
There are precision optical devices inside the EDFA; therefore extreme care should be taken
not to impose excess vibration or shaking. Care should also be taken in handling the pigtail
fibers since they are easily broken.
There are static sensitive devices inside the EDFA, please make sure proper grounding
and electrical power connection.
Do not attempt to open the EDFA by any unauthorized personnel. Please contact Nanovation
technical support for assistance.
