Optical Performance Monitor
Description
Optoplex Optical performance monitor (OPM) uses proprietary thin-film interference filter technology combined with a micro-actuator and high-speed electronics. Optical performance monitor is used to measure critical information data on optical transmission signals in DWDM networks for monitoring signal dynamics, determining system functionality, identifying performance change, and providing feedback for controlling network elements so as to optimize operational performance. In particular, Optoplex Optical performance monitor can automatically scan the C-, L- or C+L-band wavelength range and precisely measure channel wavelength and power. See the following schematic diagram for OPM working principle.
Operating through a continuous wavelength scan and built-in wavelength reference with optical tunable filter technology, Optoplex's Optical performance monitor has a high wavelength accuracy and resolution with a low channel cross-talk. Built with Optoplex's high-isolation and wide passband thin-film filter and assembled together with high-grade single detector, Optoplex's Optical performance monitor increases channel power measurement accuracy and dynamic range. Further, the Optical performance monitor includes a built-in filter driver and PCB to control and interface with all data-processing electronics. DPRAM, RS-232, or USB interfaces are available and can be customized to meet specific requirements. Optoplex's Optical performance monitor has passed Telcardia GR-468-CORE tests. Moreover, the Optical performance monitor device features compact size and low cost.
Features and Benefits of Optical Performance Monitor
High Dynamic Range
Low Temperature Sensitivity
High Reliability and Repeatability
High Power and Wavelength Accuracy
Built-in Wavelength Reference
Compact Size
Firmware Upgradeable
25 GHz and 33 GHz Channel Spacing Available
Copackaged 2-in-1 OPM available (2-port OPM)
Telcordia GR-468 Qualified
Applications of Optical Channel Monitor
Optical Add/Drop Monitoring
Optical Performance Monitoring of DWDM System
Optical Power or OSNR Monitoring for Gain Equalization
System Alarms or Error Warnings
Portable OSA/Spectrometer
Standard Specifications of Optical Channel Monitor1
Parameter
Unit
100 GHz
50 GHz
Wavelength Range
nm
C band or L band
Channel Number
-
43
85
Adjacent Channel Power Difference
dB
< 13
Non-adjacent Channel Power Difference
dB
< 20
Minimum Spacing Between Channels
GHz
75
40
Channel Input Power Range
dBm
-40 to -10
Absolute Channel Power Accuracy
dB
± 0.5
Relative Channel Power Accuracy
dB
± 0.3
Power Measurement Repeatability
dB
± 0.1
PDL
dB
< 0.3
Absolute Wavelength Accuracy
pm
± 50
Relative Wavelength Accuracy
pm
± 30
Channel Wavelength Resolution
pm
40
OSNR2
dB
> 28
> 25
OSNR Accuracy2
dB
± 1.5
Noise Floor
dBm
- 55
Response Time
ms
500 (Wavelength and Power)
1000 (Wavelength, Power & OSNR)
Power Consumption
W
< 2
Electronics Interface
-
RS232/DPRAM
Operating Temperature
°C
-5 to 65
Storage Temperature
°C
-40 to 85
Dimension3
mm
100x70x17.5 (Compact)
220x110x22 (Custom)
Notes:
Certain parameter specs can be varied based on customer demands.
Optional feature. Its values at lower input power level are limited by noise floor.
Including PCB.
Typical Performance of Optical Channel Monitor