The DAS1 board integrates the functions of an optical amplifier
unit, an FIU board (used to multiplexes the main optical channel
and supervisory channel or demultiplexes the supervisory channel
from the main channel signal), and an optical supervisory board. It
supports gain adjustment, in-service monitoring of optical
performance, gain locking, and transient state control.
For detailed functions and features, refer to Table 1.
Table 1 Functions and features of the DAS1 board
Function and Feature
Description
Basic function
Amplifies the input optical signals in C band. The total
wavelengths range from 1529 nm to 1561 nm.
Supports the system to transmit services over different fiber spans
without electrical regeneration.
Multiplexes and demultiplexes signals transmitted along the main
path and optical supervisory channel.
Processes one channel of optical supervisory signals.
Supports transparent transmission of one channel of FE electrical
signals.
Gain adjustment
The DAS1 board continuously adjusts the gain from 20 dB to 31 dB
based on the input optical power.
Online optical performance monitoring
Provides the online monitoring interface. A small number of
EDFA-amplified optical signals is output through this interface to
the optical spectrum analysis board. In this manner, the spectrum
and optical performance of the multiplexed signal are monitored
without interrupting the services.
Gain lock function
The EDFA inside the board has the gain lock function. Adding or
dropping one or more channels or optical signal fluctuation does
not affect the signal gain of other channels.
Working mode
Supports the gain locking and power locking modes.
In the gain locking mode, the gain of the board is tunable and
users can query the actual gain of the board. The gain locking mode
is enabled by default.
The power locking mode applies to scenarios in which there is only
dummy light to lock the output power of the board.
Transient control function
The EDFA inside the board has the transient control function. When
channels are added or dropped, the board can suppress the
fluctuation of the optical power in the path so as to implement the
smooth upgrading and expansion.
Alarms and performance events monitoring
Detects and reports the optical power.
Monitors the temperature of the pump laser.
Detects the pump driving current, back facet current, pump cooling
current, temperature of the pump laser and the ambient temperature
of the board.
OSC signal regeneration
The DAS1 board transmits signals from section to section. It also
has the 3R function. In each regenerating station that has optical
amplifiers, information can be correctly received and new
supervisory signals are added.
Operating wavelength for OSC signals
1511nm
Optical-layer ASON
Supported
eSFP
The RX/TX optical port supports pluggable optical modules.
DAS1 Specifications
Specifications include optical specifications, dimensions, weight,
and power consumption.
Optical Specifications
Table 1 Optical specifications of the TN11DAS1 board
Item
Unit
Value
Specifications of OA
Operating wavelength range
nm
1529-1561
1529-1561
1529-1561
Nominal gain
dB
20
26
31
Nominal input power range
dBm
-32 to 0
-32 to -6
-32 to -11
Input power range per channel
40 channels
dBm
-32 to -16
-32 to -22
-32 to -27
80 channels
dBm
-32 to -19
-32 to -25
-32 to -30
Nominal single-wavelength input optical power
40 channels
dBm
-16
-22
-27
80 channels
dBm
-19
-25
-30
Nominal single-wavelength output optical power
40 channels
dBm
4
4
4
80 channels
dBm
1
1
1
Noise figure (NF)a
dB
<= 8.5
<= 5.5
<= 5.5
Gain response time on adding/dropping of channels
ms
< 10
< 10
< 10
Channel gain
dB
20 to 31
Gain flatness
dB
<= 2.0
<= 2.0
<= 2.0
Multi-channel gain slope
dB/dB
<= 2.0
<= 2.0
<= 2.0
Input reflectance
dB
< -40
< -40
< -40
Output reflectance
dB
< -40
< -40
< -40
Pump leakage at input
dBm
< -30
< -30
< -30
Maximum reflectance tolerance at input
dB
-27
-27
-27
Maximum reflectance tolerance at output
dB
-27
-27
-27
Maximum total output optical power
dBm
20
20
20
Polarization dependent loss
dB
<= 0.5
<= 0.5
<= 0.5
Input VOA inherent insertion loss
dB
<= 1.5
Input VOA dynamic attenuation range
dB
20
Input VOA adjustment accuracy
dB
1
Specifications of demultiplexer and multiplexer
Operating wavelength range of optical supervisory channel
nm
1480 to 1520
Optical return loss
dB
> 40
Insert loss of optical supervisory channel
LIN-TM
dB
<= 1.5
RM-LOUT
Insert loss of C-band
dB
<= 1
Polarization dependent loss
dB
< 0.2
Specifications of OSC optical module
Operating wavelength range
nm
1504.5 to 1517.5
Signal rate
Mbit/s
155.52
Launched optical power
dBm
0.5 to 5
Receiver sensitivity
dBm
<= -41
Receiver overload
dBm
-10
a: The gain can be adjusted continuously. The noise figure varies
with the gain. The previous table lists the noise figure when the
noise figure uses the typical value.
NOTE:
The board supports a ±2.5 dB extended gain. The extended gain is
only for the temporary use because it affects the gain flatness.
Mechanical Specifications
Dimensions of front panel (H x W x D): 264.6 mm (10.4 in.) x 25.4
mm (1.0 in.) x 220 mm (8.7 in.)
Weight: 1.4 kg (3.1 lb.)
Power Consumption
Board
Typical Power Consumption (W)
Maximum Power Consumptiona (W)
TN11DAS1
22
28.6
a: The maximum power consumption is the power consumed by the board
when it works normally under the highest ambient temperature.
Delivery
Cargo will be delivered within 1 day after payment arrived.
Tracking Number will be offered once delivery done.
Delivery Options
Estimated Delivery Time
DHL
3-5 business days
Fedex
3-5 business days
By Sea
10-20 business days
Notice:
Above mentioned information are just for your reference only,we
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confirmed order. Uonel is responsible for transporting goods to door after you have
made the payment.
If your products failed, you must contact your sales representative
to verify product failure. If the problem still can't correct by
remote support methods i.e. email or phone support, the RMA
procedure will issue.
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