Optical performance monitoring (OPM) provides cost-effective and flexible DWDM (Dense Wavelength Division Multiplexing) network solutions. It measures 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 to optimize operational performance. Keep reading to dive into OPM.
What is OPM?
OPM is a device that acts as an all-in-one monitor of any WDM optical network, which supports up to 96 channel DWDM optical signal monitoring. It is used for optical performance monitoring analysis of high-speed DWDM signals, including optical wavelength monitoring, optical power monitoring, and optical signal-to-noise ratio (OSNR) monitoring. By distributing OPM units in critical nodes in the DWDM network, users can easily access key parameters and historical information of each monitored channel through an optimized interface.
How Does OPM Work in DWDM Networks?
In DWDM networks, OPM mainly works to monitor the quality of the data channel by measuring its optical characteristics in real-time. It can ensure correct switching in reconfigurable optical add-drop multiplexers, set levels for dynamic equalization of the gain of optical amplifiers, and provide system alarms and error warnings for lost or out-of-specification optical channels. In addition, OPM employs proprietary thin-film interference filter technology combined with a micro-actuator and high-speed electronics. To ensure stable and reliable operation of the optical network under multi-channel and high-rate conditions, the wavelength, power, and OSNR of each optical channel signal are monitored by OPM at key locations in the optical network.
What are the Features and Benefits of OPM?
OPM provides the following features and benefits:
1. High reliability and repeatability
2. High channel power measurement accuracy and dynamic range
3. High wavelength accuracy and resolution with a low channel cross-talk
4. Flexible, compact modular transport platform and cost-effective
5. Support up to 96ch DWDM optical signal monitoring
6. Support 100Ghz/50Ghz DWDM optical signal monitoring
7. Support accurate measurement of wavelength, optical power, and OSNR
Application
OPM is used in WDM/DWDM networks, EDFA, telecommunication networks, CATV networks, optical power, optical cable monitoring systems, system alarms, data centers, optical transport networks (OTN), metro networks, regional networks, long haul networks, etc.
Conclusion
OPM monitors each channel within a DWDM system to understand the signal status and quality more clearly and intuitively, which is helpful for network maintenance and troubleshooting. It has a variety of optical layer boards that provide excellent optical performance and reduce costs to meet different networking needs.
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