The TM20 board provides for colorless add of a maximum of 20
coherent wavelength signals and supports in-service monitoring of
optical power, alarms, and performance.
Table 1 describes the functions and features of the TM20 board.
Table 1 Functions and features of the TM20 board
Function and Feature
Description
Basic function
Adds a maximum of 20 coherent wavelength signals and multiplexes
the signals into one multi-wavelength signal in colorless
applications.
Supports manual configuration of add wavelengths.
Adjusts single-wavelength attenuation in the wavelength adding
directions. (Supported only by TN15TM20 and TN97TM20 . )
WDM specification
Supports the DWDM specification.
Spectrum application
TN11TM20: Supports signals with a 50 GHz channel spacing.
TN13TM20:
Supports signals with a 50 GHz channel spacing.
Supports flexible grid wavelength signals.
The signals have continuous n x slice GHz spectrums (one slice is
equal to 50 GHz, and n is an integer ranging from 1 to 8) to meet
the bandwidth requirements of high-rate services. When multi-rate
services are transmitted together, Gridless flexibly allocates
bandwidth to improve the bandwidth utilization efficiency.
TN15TM20:
Supports flexible grid wavelength signals.
The signals have continuous n x slice GHz spectrums (one slice is
equal to 6.25 GHz, and n is an integer ranging from 6 to 64) to
meet the bandwidth requirements of high-rate services. When
multi-rate services are transmitted together, Gridless flexibly
allocates bandwidth to improve the bandwidth utilization
efficiency. This function requires the WSS Flexible Grid Tunable
Function license.
TN97TM20:
Supports extended C band.
Supports flexible grid wavelength signals.
The signals have continuous n x slice GHz spectrums (one slice is
equal to 6.25 GHz, and n is an integer ranging from 6 to 64) to
meet the bandwidth requirements of high-rate services. When
multi-rate services are transmitted together, Gridless flexibly
allocates bandwidth to improve the bandwidth utilization
efficiency.
In-service optical performance monitoring
Provides an in-service monitoring port. This port connects to an
optical spectrum analyzer or spectrum analyzer unit to monitor the
signal power performance without affecting traffic.
Alarm and performance event monitoring
Detects the optical power and reports the alarms and performance
events for the board.
Optical-layer ASON
Supported
TM20 Specifications
Specifications include optical specifications, mechanical
specifications, and power consumption.
Optical Specifications
Table 1 Optical specifications of the TN11TM20 board
Parameter
Unit
Value
Optical channels
-
80
Adjacent channel spacing
GHz
50
Operating wavelength range
nm
1529 to 1561
Insertion loss-AMxa-OUT
dB
<= 8
Max. difference between channel insertion losses
dB
1.5
-1 dB spectral width
nm
> 0.16
Port isolation
dB
>= 20
Extinction ratio
dB
>= 30
Reconfiguration time
s
<= 3
Maximum reflectance
dB
-40
Polarization dependent loss
dB
<= 1
a: AMx represents the AM01 to AM20 interface.
Table 2 Optical specifications of the TN13TM20 board
Item
Unit
Value (50 GHz channel spacing)
Value (flexible grid wavelength signals, one slice is equal to 50
GHz)
Optical channels
-
80
-
Adjacent channel spacing
GHz
50
50*n (n = 1 to 8)
Operating wavelength range
nm
1529 to 1561
1529 to 1561
Insertion loss-AMxa-OUT
dB
<= 8
<= 8
Maximum channel insertion loss difference
dB
1.5
1.5
-1 dB spectral width
GHz
> 20
> 50*n-30; n = 1 to 8
Port isolation
dB
>= 20
>= 20
Extinction ratio
dB
>= 30
>= 30
Reconfiguration time
s
<= 3
<= 3
Maximum reflectance
dB
-40
-40
Polarization dependence loss
dB
<= 1
<= 1
a: AMx represents the AM01 to AM20 interface.
Table 3 Optical specifications of the TN15TM20 board
Item
Unit
Value
Slice width
GHz
6.25
Total slice number (m)
-
644
Centre frequency of every slice
THz
192.053125+(m-1)*0.00625; m=1 to 644
Slice number per slot (n)
-
6 to 64
Slot width
GHz
n*6.25; n=6 to 64
Insertion loss
AMxa-OUT
dB
≤ 8b
Maximum channel insertion loss difference
dB
1.5
-1dB spectral width
nm
> 6.25*n-25; n=6 to 64
Port isolation
dB
> 25
Extinction ratio
dB
≥ 35
Reconfiguration time
s
≤ 3
Maximum reflectance
dB
-30
Directivity
dB
≥ 35
Polarization dependence loss
dB
≤ 1.0
Attenuation range of each of wavelength
dB
0 to 15
Attenuation precision of each of wavelength
dB
≤ 1 (0 to 10 dB)
≤ 1.5 (> 10 dB)
a: AMx represents the AM1-AM20 interface.
b: This value is obtained when the attenuation is set to 0 dB.
Table 4 Optical specifications of the TN97TM20 board
Item
Unit
Value
Slice width
GHz
6.25
Total slice number (m)
-
772
Centre frequency of every slice
THz
191.253125+(m-1) x 0.00625; m=1 to 772
Slice number per slot (n)
-
6 to 64
Slot width
GHz
n x 6.25; n=6 to 64
Insertion loss
AMxa-OUT
dB
≤ 8b
Maximum channel insertion loss difference
dB
1.5
-1dB spectral width
nm
> 6.25 x n-25; n=6 to 64
Port isolation
dB
> 25
Extinction ratio
dB
≥ 35
Reconfiguration time
s
≤ 3
Maximum reflectance
dB
-30
Directivity
dB
≥ 35
Polarization dependence loss
dB
≤ 1.0
Attenuation range of each of wavelength
dB
0 to 15
Attenuation precision of each of wavelength
dB
≤ 1 (0 to 10 dB)
≤ 1.5 (> 10 dB)
a: AMx represents the AM1-AM20 interface.
b: This value is obtained when the attenuation is set to 0 dB.
Mechanical Specifications
Dimensions of the front panel (H x W x D): 264.6 mm (10.4 in.) x
76.2 mm (3.0 in.) x 220 mm (8.7 in.)
TN11TM20 Weight: 3.51 kg (7.74 lb.)
TN13TM20 Weight: 3.50 kg (7.72 lb.)
TN15TM20 Weight: 3.50 kg (7.72 lb.)
TN97TM20: 3.50kg(7.72 lb.)
Power Consumption
Board
Typical Power Consumption (W)
Maximum Power Consumptiona (W)
TN11TM20
30.0
45.0
TN13TM20
30.0
33.0
TN15TM20
18.0
42.0
TN97TM20
18.0
42.0
a: The maximum power consumption is the power consumed by the board
when it works normally under the –5°C temperature.
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