TY  - BOOK
AU  - Walker, Bruce, H 
TI  - Optical engineering fundamentals 
SN  - 81-203-2407-2 
U1  - 621.382 7 WAL  
PY  - 2003///
CY  - Prentice hall 
PB  - New Delhi 
KW  - OPTICAL COMMUNICATION
ER  -