... ,gpon olt, We supply all kinds of optical transceivers from 155M to 40G, including SFP, GBIC, SFP+, XENPAK, X2 , XFP, BIDI ... X2 MSA form factor 2.CWDM EML laser transmitter and APD photo-detector 3. Wavelength from 1470nm to 1610nm with step ...