1. Especially designed for long distance transmission 2. Based on Stimulated Raman Scattering effect Products SeriesFor CATVOL RA 0107 (1540~1563nm, witch gain 7) OL RA 0109 (1540~1563nm, witch gain 9)OL RA 0111(1540~1563nm, witch gain 11)OL RA 0113(1540~1563nm, witch gain 13)OL RA 0115(1540~1563nm, witch gain 15)OL RA 0116(1540~1563nm, witch gain 16)For CATV, optical communication and DWDMOL RA ...