If you have a MLM laser designed for use on single mode fiber, I assume some of the extra modes get transmited onto the single mode fiber.
Do these extra modes cause problems with a SLM receiver at the other end? Is it assumed the single mode fiber dissipates the extra modes over distance? What distance is needed? 2 km?
If you connect your single mode optical power meter to this MLM laser, using a SM fiber jumper, is the reading going to be accurate? Is the actual power greater than the reading?
Sorry for all the questions, but we're connecting an MLM interface to an SLM interface (IR1) over a short distance, and while the power readings are within range, it appears the SLM interface is getting overloaded, and causing line and section level SONET errors. Adding attenuation seems to clear it up.
thanks.