VTU QUESTION PAPERS:(Click this link)
https://drive.google.com/open?id=1cj4mpFzAVDEbCgztXpjA9fo9PLc9ljqS
NOTES (UNIT 4,UNIT 5,UNIT 6)
https://drive.google.com/open?id=1OdhGy2UU_KycBNfaCkjfwkZZGJG7jWRe
Unit 2 Scattering and absorption Losses in optical fiber