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.
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                   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         .
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The optical communication frequency is ______Â
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The principle of light propagation in optical fibre is based on _____
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LASER stands forÂ
Dark current is defined as
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LASER exhibits
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In a graded index fiber the refractive index _____Â
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The optical fiber structure consists of basically three parts
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Single mode fibers support only _____ mode of
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The unit of Dispersion is_______Â
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VCSEL stands for
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Johnson noise is due to _______
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A photodiode is used in _ ___
DWDM stands for_____Â
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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.
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Bending losses
Discuss micro and macro bending.
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Multimode graded index fiber and multimode step index fibre.
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Rise time budget and link power Budget.
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Splicing in fiber optics
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Advanatges and disadvantages of optical fiber communication.
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Write short notes any of TWO:
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(a) Multiplexing
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(b) Population inversion
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(c) Modulation methods
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viii) Types of amplifiers used in optical communication.
Optical Fiber Communication OFC 6th Sem Diploma May 2015Â Paper Click Here
Dispersion?its different types.
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.