We opened this Raman pump unit and also attached test data, we found it includes:Fitel 200mW PMF pump lasers with FBG:FOL1402PNJ-617-1465.0FOL1402PNJ-617-1424.5FOL1402PNJ-617-1455.0FOL1402PNJ-617-1434.5JDS EPM 605 -250 photodiode 4 pcsSSWC-A-1450-250S-1X2-01-1-N SM WB coupler 8 pcsWavesplitter WP4-ASM-142450-2-001 4x1 WavePump 1 pcsThe unit is with one SC/PC connector. The parts are all mounted in an aluminum heatsink case. The nit seems made by Nortel, since there is ‘Nortel networks’ tape on the original product box.We do not know how to use it, no pinout info, so it only sells for lasers and other passive fiber parts.This has all of the test data for each individual item. The 4-laser test data at 1st pdf link below, 4X1 Wavepump test data at 2nd pdf link, tap coupler test data at 3rd pdf link, 4 photodiode test data at 4th pdf link, and fusion splice loss data at 5th pdf link belowYou may also choose only one laser when you checkout. It will be much more expensive (about $315 each) if you only buy lasers rather than whole Raman pump unit, since we have to spend time to remove laser, test it, and pack it.---------New added message------------We do not know pinout info of whole system. PDF specification for these P/N shows each laser comes with FBG on fiber, and the distance between laser and FBG is 750mm. So no worry for the total fiber length.14-leads of each laser are still long enough to fix ILX laser mount/fixtures (we have them) based our laser testing experience.-------------------------------Please choose wavelength and P/N at the "Options" section below, then you will see actual available qty and price.If you buy whole Raman pump unit, you can return it if lasers are not working reasonably.