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Explain Optical Transmission System Concepts in detail and also explain it's advantages.
optical fiber communication updated 23 months ago by prajapatijaimin • 3.2k
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For a multimode fiber following parameters are recorded, Calculate system rise time.
optical fiber communication updated 23 months ago by prajapatijaimin • 3.2k
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The radiative and nonradiative recombination lifetimes of minority carriers in the active region of a double heterojunction LED are $60 \mathrm{nsec}$ and $90 \mathrm{nsec}$ respectively. Determine..
optical fiber communication updated 23 months ago by prajapatijaimin • 3.2k
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An LED operating at $850 \mathrm{~nm}$ has a spectral width of $45 \mathrm{~nm}$. What is the pulse spreading in $\mathrm{ns} / \mathrm{km}$ due to material dispersion?
optical fiber communication updated 23 months ago by prajapatijaimin • 3.2k
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What is Mode coupling? Explain in detail.
optical fiber communication updated 23 months ago by prajapatijaimin • 3.2k
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Explain any five Basic Requirements and Considerations in Fiber Fabrication.
optical fiber communication updated 23 months ago by prajapatijaimin • 3.2k
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Write a short note on: Halide Glass Fibers.
optical fiber communication updated 23 months ago by prajapatijaimin • 3.2k
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A continuous 12 km long optical fiber link has a 1.5 dB/km loss. What is the minimum visual power level that must be launched into the fiber to maintain an optical power level of $0.3 \mu \mathrm{W}$
optical fiber communication updated 23 months ago by prajapatijaimin • 3.2k
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When mean optical power launched into an $8 \mathrm{~km}$ length of fiber is $12 \mu \mathrm{W}$, the mean optical power at the fiber output is $3 \mu \mathrm{W}$.
optical fiber communication updated 23 months ago by prajapatijaimin • 3.2k
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For a 30 km long fiber attenuation 0.8 dB /km at 1300 nm. If a 200-watt power is launched into the fiber, find the output power.
optical fiber communication updated 23 months ago by prajapatijaimin • 3.2k
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A low-loss fiber has an average loss of 3 dB/km at 900 nm. Compute the length over which, a) Power decreases by 50% b) Power decreases by 75%.
optical fiber communication updated 23 months ago by prajapatijaimin • 3.2k
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Optical power launched into the fiber at the transmitter end is 150 W. The power at the end of the 10 km length of the link working in the first windows is -38.2d Bm. ..
optical fiber communication updated 23 months ago by prajapatijaimin • 3.2k
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The input power to an optical fiber is $2 \mathrm{~mW}$ while the power measured at the output end is $2 \mu \mathrm{W}$. If the fiber attenuation is $0.5 \mathrm{~dB} / \mathrm{km}$, calculate the le
optical fiber communication updated 23 months ago by prajapatijaimin • 3.2k
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550
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Write a Characteristics of Light Source of Communication.
optical fiber communication updated 23 months ago by prajapatijaimin • 3.2k
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658
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Compute the emitted wavelength from an optical source having x = 0.07.
optical fiber communication updated 23 months ago by prajapatijaimin • 3.2k
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A double heterojunction InGaAsP LED operating at $1310 \mathrm{~nm}$ has radiative and non-radiative recombination times of 30 and $100 \mathrm{~ns}$ respectively. ..
optical fiber communication updated 23 months ago by prajapatijaimin • 3.2k
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624
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Find the optical gain at the threshold of a laser diode having the following parametricvalues $-\mathrm{R} 1=\mathrm{R} 2=0.32, \alpha=10 \mathrm{~cm}-1$ and $\mathrm{L}=500 \mu \mathrm{m}$.
optical fiber communication updated 23 months ago by prajapatijaimin • 3.2k
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770
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Design as optical fiber link for transmitting $15 \mathrm{Mb} / \mathrm{sec}$ of data for a distance of $4 \mathrm{~km}$ with BER of $10^{-9}$.
optical fiber communication updated 23 months ago by prajapatijaimin • 3.2k
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A transmitter has an output power of 0.1 mW. It is used with a fiber having NA= 0.25, attenuation of 6 dB/km, and length of 0.5 km. ..
optical fiber communication updated 23 months ago by prajapatijaimin • 3.2k
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240
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Explain Active DWDM in detail.
optical fiber communication updated 23 months ago by prajapatijaimin • 3.2k
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673
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What is optical network? Explain about Elements of optical network.
optical fiber communication updated 23 months ago by prajapatijaimin • 3.2k
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Types of communication channel.
principles of communication network updated 23 months ago by sagarkolekar ★ 11k
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1] Fidelity. 2] Selectivity 3] Sensitivity. 4] Image frequency and its rejection. 5] Double spotting.
principles of communication network updated 23 months ago by sagarkolekar ★ 11k
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Noise figure and Noise factor.
principles of communication network updated 23 months ago by sagarkolekar ★ 11k
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322
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Calculate power of given signal x(t),
discrete time signal processing updated 23 months ago by prajapatijaimin • 3.2k
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