1. MEENAKSHI COLLEGE OF ENGINEERING
CHENNAI – 78
DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING
UNIT TEST- I
Subject Name/Code: EI8075/Fiber optics and Laser Instruments Marks: 50
Year/Sem: IV/VII Date: 30.09.21
Session: FN Time: 1.5 Hrs
Part –A (5×2 = 10 Marks)
(Answer all Questions)
1.What is the basicprinciplesof interferometricsensors?Whatare theiruses?
2.What is the special featuresof opticsensors?
3.What is the principle of microbendingsensors?
4.What are active andpassive sensors?
5.What is Optical Time DomainReflectometer?
Part –B (13x2=26)
(Answer any two Questions)
6.Explain the construction and working principle of OTDR with neat diagram?
7.Explain the interferometric method of length measurement of an optical fibres? And also explain the Moire
fringe pattern?
8.Explain the principle of measurement of Refractive index profile of an optical fiber?
Part-C (14x1=14)
(Compulsory)
9. Describethe different types of fibers and their properties with neat diagram?
FACULTY INCHARGE HOD
