Download Previous Year Diploma Paper of Optical Fiber Communication OFC 6th Sem Diploma May 2019 Paper
Optical Fiber Communication OFC 6th Sem Diploma May 2019 Paper
                        SECTION-A
Q1. Do as directed.                                                       15×1=15
    a. LASER stands for Light Amplification and Stimulated Emission of Radiation.
    b. An optical detector converts Light signal to Electrical signal.
    c. The refractive index of the core is less than cladding. (T/F) False
    d. Define critical angle.
    e. SLED stands for Surface Light Emitting Diode .
    f. V-groove splice is ______ a type of splice.
    g. Numerical aperture is the light gathering capability of optical fiber. (T/F) True
    h. Dispersion causes light pulse SpreadÂ
    i. Define Snell’s Law.
    j. The wavelength of optical fiber communication is .
    k. Rayleigh scattering always occur in reverse direction. (T/F)
    l. TWA stands forÂ
   m. An LED is a coherent source of light. (T/F) False
    n. EDFA stands for Erbium-Doped Fiber Amplifier .
   o. Define dark current.
                   SECTION-B
Q2. Attempt any five questions.                                  5×6=30
   i. List the advantages and disadvantages of optical fiber communication.
   ii. Write a short note on TIR.
  iii. What is numerical aperture? What is its significance in fiber optics?
  iv. What do you mean by optical splicing? Explain fusion splicing method.
  v. Explain optical power budgeting.
  vi. Write a short note on the following.
    a. Spontaneous Emission
    b. Stimulated Emission
  vii. What are the different modes of propagation used in optical fiber?
                   SECTION-C
Q3. Attempt any three questions.                            3×10=30
   a. Discuss the elements of Optical fiber communication in detail.
    b. Explain dispersion and its types in detail.
   c. Explain the construction and working of SOA in detail.
   d. Write note on (any two)
     i. Wavelength Division Multiplexing
     ii. Critical Angle
     iii. Noise in optical fiber
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 _________
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Critical Angle
Snell’s Law
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Step Index and graded index FibresÂ
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Characteristics of light used in Optical CommunicationÂ
Block diagram of an Optical Receiver
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Different types of functional Amplifiers.
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What is Splicing
Two Techniques of SplicingÂ
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Applications of Optical CommunicationÂ
Few applications of Optical CommunicationÂ
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Elements of Optical fiber communication in detail
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Dispersion and its types in detail.
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Construction and working of SOA in detail.
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Write note on (any two)
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i. Wavelength Division Multiplexing
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ii. Critical Angle
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iii. Noise in optical fiber