WLPS Applications

1. Bi-directional point-to-point protection using 1x2 WDM Light Path Protection Switch (WLPS)

• Bi-directional 1:1 Point-to-point protection
• Splitters and photo diodes (not shown) inside the 1x2 WLPS are used for monitoring the signal level
• Patent Pending proprietary monitor methodology to eliminate Near-end Crosstalk (NeXT) due to reflection
• Designed to work in pair with matching wavelength

When the primary path is damaged or cut, WLPS will switch the traffic to the protection path.

2. Bi-directional point-to-point protection using 2x2 Crossover WDM Light Path Protection Switch (Crossover WLPS)

• Simultaneous monitoring of both primary and protection paths
• Increase efficiency by better utilization of protection path
• Accommodate traffic of different priorities
• The status of the protection fiber can be monitored

When the primary path is damaged or cut, WLPS will switch the traffic to the protection path. High priority traffic is, therefore, restored while low priority traffic is dropped.

3. Bi-directional WDM Ring protection using 2x2 Crossover WLPS and Bridge WDM Light Path Protection Switch (Bridge-WLPS)

• Switching is automatic among WLPS with no in-band or out-of-band signaling required.
• Node extensions allow additional traffic on protection fibers

When primary path between the two nodes is damaged or cut, both Crossover WLPS will simultaneously detect the problem path and restore the high priority traffic to the protection path. At this moment, extension nodes will automatically loop-back their low priority traffic so that the traffic between the extension nodes will be dropped.

WDM Light Path Protection Switch links to:

• WLPS Access & Configuration

• WLPS Specifications

• WLPS Ordering Information

• WLPS