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3-Port ROADM / TOADM |
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- Description
- Features
- Applications
- Specification
- Typical Performance
- Parameter Definition
 Product Description - Reconfigurable Optical Add/Drop Multiplexer |
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Optoplex's Reconfigurable Optical Add/Drop Multiplexer (ROADM) module, also known as Tunable Optical Add/Drop Multiplexer (TOADM), is based on a proprietary micro-optics and micro-actuator design, athermal packaging technology, and state-of-the-art thin-film coating. When receiving a stream of optical signals of a plurality of wavelengths from the Input-Port (IN), this 3-port ROADM device directs a selected channel to the Drop-Port (ADD/DROP) and the remaining channels to the Express-Port (EXP), as depicted in the figure below. This tunable feature can also be used for adding a channel, when the device is used in reverse. Cascading two ROADM modules, simultaneous add and drop functions can be achieved. Each single ROADM device is optimized to cover either C- or L-band wavelengths. The standard 100- or 200-GHz channel spacing ROADM products allow for single-channel drop. Customized banded-channel drop ROADMs are available upon request.
For 2-port Optical Tunable Filter, please visit Optical Tunable Filter page.
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| Features and Benefits of ROADM |
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- Athermal Design
- Wide Tuning Range, Cover Entire C- or L-Band
- Flat and Wide Passband for up to 40 Gb/s Signal
- Low & Uniform Insertion Loss
- High Channel Isolation
- Latching and Low Power Consumption
- 2-Port Tunable Filter Available
- Telcordia GR-468 Qualified
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| Applications of ROADM |
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- Dynamically reconfigure channels
- Dynamic wavelength selection in DWDM systems
- Signal demultiplexing for DWDMs
- Optical performance monitoring
- Tunable optical noise filtering
- Noise suppression for optical amplifiers
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| Standard Specifications of ROADM1 |
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Parameter |
Unit |
100 GHz |
| Wavelength
Tuning Range |
nm |
1528 ~ 1563 |
| Wavelength
Tuning Resolution |
THz |
Calibrated to ITU grids |
| Clear
Bandwidth |
GHz |
ITU±10 |
| Drop
Channel Maximum Insertion Loss2,3 |
dB |
2.8 |
| Drop
Channel Ripple2,3 |
dB |
0.3 |
| Drop
Channel Adjacent Channel Isolation2,3 |
dB |
>25 |
| Drop
Channel PDL2,3 |
dB |
<0.5 |
| Express
Channel Insertion Loss2,3 |
dB |
<2.3 |
| Express
Non-Adjacent Channel Ripple2,3 |
dB |
<0.1 |
| Express
Adjacent Channel Ripple2,3 |
dB |
<0.5 |
| Express
Channel Isolation (drop in express)2,3 |
dB |
>25 |
| Express
Channel PDL2,3 |
dB |
<0.5 |
| PMD2,3 |
ps |
<0.5 |
| Wavelength
Setting Error4 |
GHz |
< ±4 |
| Wavelength
Repeatability4 |
GHz |
±1 |
| Wavelength
Temperature Dependence2 |
pm/°C |
< ±1 (typical) |
| Return
Loss2 |
dB |
>40 |
| Maximum
Input Optical Power |
mW |
300 |
| Tuning
Speed (channel to channel, depending on originating and destination channels) |
sec |
5 ~ 10 |
| Tuning
Power Consumption |
mW |
< 1800 (peak); < 300 (idle) |
| Tuning
Voltage |
V |
5 (DC) |
| Electronic
Interface |
- |
RS232 |
| Operating
Temperature |
°C |
0 ~ 65 |
| Storage
Temperature |
°C |
-40 ~ 85 |
| Dimension (L x W x H)5 |
mm |
88 x 62 |
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Notes:
- Certain parameter specifications can be varied based on customer needs.
- Over the stated spectral and operating temperature ranges and all polarization states.
- Within clear bandwidth.
- Alignment related at a given temperature.
- Including collimator sleeve and control PCB.
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| Typical Performance of ROADM |
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| Parameter Definition of 3-Port Tunable Optical Filter |
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Parameter
Definition |
Example |
Wavelength Tuning Range (nm) is the spectral range over which a ROADM's center wavelength can be
tuned and performance specification can be met.. |
1527.994 ~ 1563.047 nm |
Wavelength
Tuning Resolution (GHz) is the minimum
tuning step of a tunable filter. |
10 pm |
Passband Width @ X-dB Down (GHz) is the full spectral width centered
at the ITU grid measured at X-dB below the minimum insertion loss
point. Usually, X = 0.5, 1, 3 and 20. |
35 GHz @0.5-dB down for 100 GHz channel spacing |
Peak
Insertion Loss (dB) is power
difference between the 0-dB level and the maximum power level measured within
a given passband window. |
2.5 dB |
Polarization
Dependent Loss (PDL) (dB) is the difference
between the maximum and minimum insertion loss over all polarization states
within a given passband window. |
0.3 dB within CW ± 12 GHz |
Polarization
Mode Dispersion (PMD) (ps)
is the maximum Differential Group Delay within a given passband width. |
0.3 ps |
Chromatic
Dispersion (CD) (ps/nm)
is the derivative of the Group Delay versus wavelength within a given passband width. |
± 25 ps/nm within CW ± 12 GHz |
Wavelength
Setting Error (GHz) is the difference between a
channel central wavelength (usually defined using 3-dB bandwidth) and the
target wavelength (usually the ITU grid) during tuning. |
± 4 GHz |
Wavelength
Repeatability (GHz) is the repeatability of a
channel central wavelength (usually defined using 3-dB bandwidth) during
repeated tuning. |
± 1 GHz |
Wavelength
Temperature Dependence (pm/°C) is the rate of a
channel central wavelength versus temperature. |
± 1
pm/°C |
Optical
Return Loss (dB) is the ratio between the input
power and the reflected power over all polarization states at each port , RL = -10×log10(Pr/Pin). |
40 dB |
Tuning
Speed (s) is the time needed by a tunable filter
to tune from one channel to another. It is dependent on the originating and
destination channels. The longest time required is specified. |
6 s |
Operating
Temperature (°C) is the ambient temperature
range over which the device's performance spec can be met. |
-5 to 65 °C |
Storage
Temperature (°C) is the ambient temperature
range over which the device can be stored without affecting its intended
application afterwards. |
-40 to 85 °C |
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| Product Request and Ordering Information |
| Please speak to Optoplex Sales persons. If you request custom-designed TOADM/ROADM product,
please provide the following parameters: |
- Wavelength range
- Channel spacings
- Pass bandwidth
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- Fiber length
- Optical connector type
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