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Optical Fiber Communication

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A signal is retrieved at the optical fiber end whose power is half that of the input power. Calculate the loss in fiber. Also, calculate the output power if the loss is $30 \mathrm{~dB} / \mathrm{km}$
optical fiber communication updated 17 months ago by prajapatijaimin • 3.1k
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A glass fibre exhibits material dispersion given by $\left|\lambda^2 \frac{d^2 n}{d \lambda^2}\right|$ of 0.025. Determine the material dispersion parameter at a wavelength of $0.85 \mu \mathrm{m}$,
optical fiber communication updated 17 months ago by prajapatijaimin • 3.1k
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A $6 \mathrm{~km}$ optical link consists of multimode step-index fiber with a core refractive index of 1.5 and a relative refractive index difference of $1 \%$...
optical fiber communication updated 17 months ago by prajapatijaimin • 3.1k
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Consider a bare step-index fiber with $n_1=1.46, n_2=1.0$ and $a=50$ $\mu \mathrm{m}$. Show that the pulse dispersion is about $2240 \mathrm{~ns} / \mathrm{km}$.
optical fiber communication updated 17 months ago by prajapatijaimin • 3.1k
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Find the core radius necessary for single mode operation at $800 \mathrm{~nm}$ in step-index fiber with $n_1=1.48$ and $n_2=1.47$. Find the NA and maximum acceptance angle.
optical fiber communication updated 17 months ago by prajapatijaimin • 3.1k
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Calculate the number of modes at $820 \mathrm{~nm}$ in a graded index fibre having a parabolic index profile $\left(\alpha_1=2\right)$, a $25 \mu \mathrm{m}$ core radius,...
optical fiber communication updated 17 months ago by prajapatijaimin • 3.1k
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A manufacturer wishes to make a silica core, step-index fiber with $\mathrm{V}=75$ and a numerical aperture $\mathrm{NA}=0.30$ to be used at $820 \mathrm{~nm}$. If $n_1=1.458$, what should the core..
optical fiber communication updated 17 months ago by prajapatijaimin • 3.1k
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Determine the normalized frequency at $0.82 \mu \mathrm{m}$ for a step-index fiber having a $25 \mu \mathrm{m}$ core radius, $n_1=1.48$ and $n_2=1.46$. How many modes propagate in this fiber at..
optical fiber communication updated 17 months ago by prajapatijaimin • 3.1k
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A step-index fiber has normalized frequency $V=266$ at $1300 \mathrm{~nm}$ wavelength. If the core radius is $25 \mu \mathrm{m}$, calculate the numerical aperture.
optical fiber communication updated 17 months ago by prajapatijaimin • 3.1k
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An Optical fiber has a numerical aperture of 0.15 in air and a cladding refractive index of 1.50. Find the numerical aperture of the fiber in liquid with a refractive index of 1.30.
optical fiber communication updated 17 months ago by prajapatijaimin • 3.1k
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Optical fiber has a numerical aperture of 0.2 and a cladding refractive index of 1.59. Determine the acceptance angle for the fiber in water which has a refractive index of 1.33.
optical fiber communication updated 17 months ago by prajapatijaimin • 3.1k
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A glass-clad fiber is made with a core glass of a refractive index of 1.5 and the cladding is doped to give an index difference of 0.0005. Determine, (a) the cladding refractive index,..
optical fiber communication updated 17 months ago by prajapatijaimin • 3.1k
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Calculate the numerical aperture, acceptance angle, and critical angle of a fiber having a core refractive index of $1.5$ and a cladding refractive index of $1.45$.
optical fiber communication updated 17 months ago by prajapatijaimin • 3.1k
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Calculate the maximum value of the angle of incidence that a ray can make with the axis of a fiber such that it is guided through the fiber for the following fiber parameters...
optical fiber communication updated 17 months ago by prajapatijaimin • 3.1k
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Problem 1 Consider a fibre with $n_1=1.48, n_2=1.46$ and core radius $a=30 \mu \mathrm{m}$. (a) Show that all rays making an angle $\theta<9.43^{\circ}$ with the axis will be guided through the fibbe
optical fiber communication updated 17 months ago by prajapatijaimin • 3.1k
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Write a Advantages of Fibber Optic Sensors in detail.
optical fiber communication updated 17 months ago by prajapatijaimin • 3.1k
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Briefly explain Distributed Bragg Reflector (DBR) Laser with diagram.
optical fiber communication updated 17 months ago by prajapatijaimin • 3.1k
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Write a short note on Integrated Absorption Modulators.
optical fiber communication updated 17 months ago by prajapatijaimin • 3.1k
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What is Line Broadening? and also explain it's types.
optical fiber communication updated 17 months ago by prajapatijaimin • 3.1k
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What is Coherence Length and Coherence Time? explain in detail.
optical fiber communication updated 17 months ago by prajapatijaimin • 3.1k
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Write a Characteristics of LEDs in detail.
optical fiber communication updated 17 months ago by prajapatijaimin • 3.1k
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Short Note: a. Transmission system model b. Power penalty c. Crosstalk d. Wavelength Stabilization
optical fiber communication updated 17 months ago by sagarkolekar ★ 11k
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Define Four-Wave Mixing (FWM) with diagram.
optical fiber communication updated 17 months ago by prajapatijaimin • 3.1k
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Describe a Non-Zero Dispersion-Shifted Fibber in detail.
optical fiber communication updated 17 months ago by prajapatijaimin • 3.1k
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What is Polarisation Mode Dispersion (PMD)? explain in detail.
optical fiber communication updated 17 months ago by prajapatijaimin • 3.1k
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