Question paper – B Tech VII Semester ECE

Question paper – B Tech  VII  Semester   ECE-2

Time -1 hrs  MM : 30

Note: Answer all questions, each question carry equal marks (1.5 marks)

Describe briefly:

1. What is absorption?

2. What are scattering parameters in optical device ?

3. Multimode terms used in fiber optics ?

4. Gaussian beam used in laser ?

5. Advantages of fiber optics?

6. Optical sensors used for human welfare?

7. SPP, SPR and Optical radiations at visible frequencies?

8. Emitter and detector (  THz ,IR and visible spectrum)?

9. Multimode step index fiber?

10. Single mode fibers?

11. optical communication system?

12. Dispersion in optics?

13.  Propagating modes ?

14.  Calculate resonant frequency of Silicon  rectangular sensor having  a,b,d dimensions as 30micrometers(each) with material permittivity as  11.9 

15. Calculate fundamental frequency of Silicon Cylindrical sensor built with height and radius 25 and 13.3 micrometers respectively built with silicon  εr= 11.9  

16. UV sensor ?

17. Optical Gas sensor?

18. Optical Glucose sensor?

19. Optical Oxymeter pulse  sensor ?

20. Optical Antenna?

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