OPT-EDFA-35, or OPT-EDFA-24 card safety labels, see "Class 1M Laser Product
OPT-EDFA-35 card is supported only in NCS Flex and NCS SSON packages.
The OPT-EDFA-17, OPT-EDFA-24, and OPT-EDFA-35 cards
are C-band DWDM EDFA amplifiers and preamplifiers. The cards are true variable gain
amplifiers, offering an optimal equalization of the transmitted optical channels over a
wide gain range. They support 96 channels at 50-GHz channel spacing in the C-band (that
is, 1528.77 to 1566.72-nm wavelength range). The OPT-EDFA-17 and OPT-EDFA-24 cards
deliver 20-dBm output powers and the OPT-EDFA-35 card delivers +23-dBm output power.
These cards do not contain mid-stage access loss for a Dispersion Compensation Unit
(DCU). The cards provide a noise-figure optimized version of the EDFA amplifiers to cope
with new modulation formats like PM-DQPSK, which do not need dispersion compensation. To
control gain tilt, a VOA is used. The amplifier module also includes the OSC add (TX
direction) and drop (RX direction) optical filters.
The OPT-EDFA-17, and OPT-EDFA-24 cards share the same
hardware platform and firmware architecture, but they differ in their operative optical
gain range, which is 17 and 24 dB respectively.
The OPT-EDFA-35 card includes two identical amplification sections to serve two fiber
directions simultaneously. Each section has a switchable gain range that allows its
usage over a wide gain range. The OPT-EDFA-35 card is bidirectional. The card acts on
both pairs of fibers entering and exiting from the node.
The OPT-EDFA-35 card has two possible gain ranges: gain range 1 from 12–24, gain range 2 from
20–35. The card also has extended gain range up to 40 dB without tilt control.
The OPT-EDFA-35 card is managed in a similar way as the OPT-EDFA-17 and OPT-EDFA-24 cards. For
each EDFA unit inside the OPT-EDFA-35 card, the following settings are allowed:
Configuration of PRE or BST role
Configuration of Constant Gain working mode
Configuration of Gain Range
The main functionalities of the OPT-EDFA-17,
OPT-EDFA-24, and OPT-EDFA-35 cards are:
(OPT-EDFA-17 and OPT-EDFA-24)
Amplification of the input signal at the COM-RX port toward the LINE-TX port
through a true-variable gain EDFA block.
(OPT-EDFA-35) Two EDFA amplifier units
embedded into the card, amplification of the input signal at the LINE-1-RX port
toward the LINE-2-TX port through a true-variable gain EDFA-2 block, and
amplification of the input signal at the LINE-2-RX port toward the LINE-1-TX
port through a true-variable gain EDFA-1 block.
Multiplexing the OSC to the
Demultiplexing the OSC from the LINE-RX port
Monitoring of the LINE input
or output signal with 1% TAP splitters
The features of the OPT-EDFA-17, OPT-EDFA-24, and
OPT-EDFA-35 cards are:
Embedded Gain Flattening
Constant pump current mode
Constant output power mode
Constant gain mode
ASE compensation in Constant
Gain and Constant Output Power modes
Fast transient suppression
Full monitoring and alarm
Gain range with gain tilt control of 5–17 dB
(for OPT-EDFA-17 card) , 12 to 24 dB and 20 to 35 dB (for OPT-EDFA-35 card),
and 12–24 dB (for OPT-EDFA-24 card).
Extended gain range (with uncontrolled tilt)
of 17–20 dB (for OPT-EDFA-17 card) , (for OPT-EDFA-35 card) of upto 27dB
(for Gain Range1) and 40dB (for Gain Range2), and 24–27 dB (for
Optical Safety Remote
Automatic Laser Shutdown (ALS)
You can install the OPT-EDFA-17 and OPT-EDFA-24 cards in slots
1–6 and 12–17 in ONS 15454 M12.
You can install the OPT-EDFA-17, OPT-EDFA-24, and OPT-EDFA-35 cards in the following slots: