Optical Fiber Communication OFC 6th Sem Diploma Dec 2015 Paper

Download Previous Year Diploma Paper of Optical Fiber Communication OFC 6th Sem Diploma Dec 2015 Paper

Optical Fiber Communication OFC 6th Sem Diploma Dec 2015 Paper

                                                SECTION-A

Q1. Do as directed.                                                                                                              10×1.5=15

     (i) LASER stands for Light Amplification Stimulated Emission of Radiations.
    (ii) APD stands for anti-photo diode. (T/F)
   (iii) Define dark current.
   (iv) Define refraction.
   (v) WDM stands for Wavelength Division Multiplexing .
  (vi) Optical fiber is costlier than wires. (T/F)
  vii) Name two fiber splicing techniques.
  (viii) Intermodal dispersion occurs in multimode fibers. (T/F)
  (ix) Unit for measurement of attenuation in optical fiber is Decibel (dB) .
   (x) Write two properties of LASER.

 

                                      SECTION-B

Q2. Attempt any five questions.                                                                    5×6=30

     (i) Explain PIN diode as optical detector.
    (ii) What do you mean by bending losses? Discuss micro and macro bending.
    (iii) Discuss multimode graded index fiber and multimode step index fibre.
    (iv) Discuss rise time budget and link power budget.
    (v) What is splicing in fiber optics? Explain briefly.
    (vi) Explain various advanatges and disadvantages of optical fiber communication.
    (vii) Write short notes any of TWO:
          (a) Multiplexing
          (b) Population inversion
          (c) Modulation methods
    (viii) Discuss different types of amplifiers used in optical communication.

                                     SECTION-C

Q3. Attempt any three questions.                                                       3×10=30

    (i) What is dispersion? Explain in detail its different types.
   (ii) Explain working principle of optical fiber communication system. Discuss various applications of fiber optics.
   (iii) Draw and explain block diagram of optical receiver and transmitter circuit.
   (iv) Explain in detail working of LED and its different types.

The number of bits transmitted per second over a channel is called          .

 

The optical communication frequency is ______ 

 

The principle of light propagation in optical fibre is based on _____

 

Dark current is defined as

 

LASER exhibits

 

In a graded index fiber the refractive index _____ 

 

The optical fiber structure consists of basically three parts

 

Single mode fibers support only _____ mode of

 

The unit of Dispersion is_______ 

 

VCSEL stands for

 

Johnson noise is due to _______

 

A photodiode is used in _ ___

DWDM stands for_____ 

 

The heart of an optical receiver is the _________

Optical Fiber Communication OFC 6th Sem Diploma May 2015 Solved Paper Click Here

PIN diode as optical detector.
   

Bending losses

Discuss micro and macro bending.
    

Multimode graded index fiber and multimode step index fibre.
   

Rise time budget and link power Budget.
    

Advanatges and disadvantages of optical fiber communication.
    

Write short notes any of TWO:
        

(a) Multiplexing
        

(b) Population inversion
        

(c) Modulation methods
   

viii) Types of amplifiers used in optical communication.

Optical Fiber Communication OFC 6th Sem Diploma May 2015 Paper Click Here

Optical Fiber Communication OFC 6th Sem Diploma May 2015 Paper

Working principle of optical fiber communication system.

Discuss various applications of fiber optics.

Block diagram of optical receiver and transmitter circuit.

Working of LED and its different types.

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