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product for an optical fiber m-1 and optical e the bandwidth and length with chromatic dispersion coefficient 8pskm-...
8. A 1550 nm optical link uses a standard single-mode fiber with dispersion parameter of 4 ps/nm/km (Chromatic Dispersion), and a laser source with a linewidth of 0.5 nm. Assuming the link carrier is...
8. A 1550 nm optical link uses a standard single-mode fiber with dispersion parameter of 4 ps/nm/km (Chromatic Dispersion), and a laser source with a linewidth of 0.5 nm. Assuming the link carrier is a 10 Gbits/s binary signal, estimate the maximum length of optical fiber required before dispersion compensation is required. (Assume the maximum spread is half the time interval between each bit).
Q1)in maltimode step index fiber,the pulsebroadening due to intermodel dispersion increase linearly with the fiber length...
Q1)in maltimode step index fiber,the pulsebroadening due to intermodel dispersion increase linearly with the fiber length (true and why this statement is true or false and prove why false) . Q2)APD is preferable in shot noise limited case whereas PIN is preferable in thermal noise limited case(true and why this statement is true or false and prove why false). Q3)multimode GI-Fiber are characterized by higher gathering capability and lower intermodal dispersion compared to multimode step index fiber(true and why this...
Photonics and Optical Revision Sheet 1 1. Caculate the photon energy in eV for a wavelength of 1....
Photonics and Optical Revision Sheet 1 1. Caculate the photon energy in eV for a wavelength of 1.55 um 2, A 1.55 μm digital communications system operating at 4 GBits/s receives an average power of -24 dBm at the detector. On the assumption that 1 and 0 bits are equally likely to occur how many photons are received within each 1 bit? 3. A1.3 um digital communications system operating at 3 GBits/s receives an average power of -29 dBm at...
1. Plastic optical fiber (POF) is a low-cost alternative to standard fiber optic cable.The core is...
1. Plastic optical fiber (POF) is a low-cost alternative to standard fiber optic cable.The core is of either Poly(methyl methacrylate) or Polystyrene and the cladding is usually of silicone resin.Typically POFs have a large core size, making them easy and cheap to connectorize and couple to laser diodes but they have a low bandwidth-distance product and high attenuation. a) Search the web and find typical values for the bandwidth-distance product and attenuation of step index plastic optical fiber. How do...
1. Select the correct statement(s) regarding frequency modulation (FM) and bandwidth. A. Increasing Kvco will increase...
1. Select the correct statement(s) regarding frequency modulation (FM) and bandwidth. A. Increasing Kvco will increase frequency bandwidth B. the higher the FM index ?, the wider the modulated signal bandwidth C. As baseband signal, m(t) amplitude increase, so does modulated signal bandwidth D. All are correct statements 2. Identify the way(s) baseband signals, m(t), can modulate a carrier wave. a) By changing the carrier amplitude to reflect m(t) b) By changing the carrier frequency to reflect m(t) c) By...
(a) The optical gain coefficient of a semiconductor laser with 150 μm cavity length is shown in Fig 1. The loss coefficient and the refractive index of the semiconductor laser are 21.6 cm" and 3....
(a) The optical gain coefficient of a semiconductor laser with 150 μm cavity length is shown in Fig 1. The loss coefficient and the refractive index of the semiconductor laser are 21.6 cm" and 3.5 respectively. Find (i)The minimum gain coefficient required for lasing (ii) The frequency separation between the longitudinal modes of the laser (iii) The number of longitudinal modes emitted (b) This laser is required to produce a single mode output at a wavelength of 1.32 unm If...
A 1 m length dye laser emitting around 500 nm has a 1 nm bandwidth. How...
A 1 m length dye laser emitting around 500 nm has a 1 nm bandwidth. How many longitudinal modes can the laser have?
1.The minimum wavelength and the minimum wave length for visible light is about 0.4 um and...
1.The minimum wavelength and the minimum wave length for visible light is about 0.4 um and 0.7 um, respectively . Assume that the velocity of light is a constant of 3.0x10^8 m/s and Planck's constant is 4.13x10^-15 eV-s. What kind of material will appear colored? (a)The material with band gap of 1.0eV (b)The material with band gap of 2.0eV (c)The material with band gap of 3.2eV (d)The material with band gap of 3.5eV 2.Which kind of material is most likely...
2-1: GaAs has a refractive index of 3.68 and an absorption coefficient of 1.3x10 m' at...
2-1: GaAs has a refractive index of 3.68 and an absorption coefficient of 1.3x10 m' at 800 nm. Calculate the transmission coefficient and optical density of a GaAs plate of thickness 2.0 micrometers 2-2: The complex dielectric function of a metal at IR frequency can be described by the following: w, +i Eow where E, is the relative static dielectric constant, o is the w and is the angle frequency. Estimate the reflectivity of a silver mirror electrical conductivity, at...
PROBLEM 17.113 The slender rod AB of length L = 1 m forms an angle B...
PROBLEM 17.113 The slender rod AB of length L = 1 m forms an angle B = 30° with the vertical as it strikes the frictionless surface shown with a vertical velocity 7 = 2 m/s and no angular velocity. Knowing that the coefficient of restitution between the rod and the ground is e = 0.8, determine the angular velocity of the rod immediately after the impact.
Photonics and Optical Revision Sheet 1 1. Caculate the photon energy in eV for a wavelength of 1.55 um 2, A 1.55 μm digital communications system operating at 4 GBits/s receives an average power of -24 dBm at the detector. On the assumption that 1 and 0 bits are equally likely to occur how many photons are received within each 1 bit? 3. A1.3 um digital communications system operating at 3 GBits/s receives an average power of -29 dBm at...
(a) The optical gain coefficient of a semiconductor laser with 150 μm cavity length is shown in Fig 1. The loss coefficient and the refractive index of the semiconductor laser are 21.6 cm" and 3.5 respectively. Find (i)The minimum gain coefficient required for lasing (ii) The frequency separation between the longitudinal modes of the laser (iii) The number of longitudinal modes emitted (b) This laser is required to produce a single mode output at a wavelength of 1.32 unm If...
2-1: GaAs has a refractive index of 3.68 and an absorption coefficient of 1.3x10 m' at 800 nm. Calculate the transmission coefficient and optical density of a GaAs plate of thickness 2.0 micrometers 2-2: The complex dielectric function of a metal at IR frequency can be described by the following: w, +i Eow where E, is the relative static dielectric constant, o is the w and is the angle frequency. Estimate the reflectivity of a silver mirror electrical conductivity, at...
PROBLEM 17.113 The slender rod AB of length L = 1 m forms an angle B = 30° with the vertical as it strikes the frictionless surface shown with a vertical velocity 7 = 2 m/s and no angular velocity. Knowing that the coefficient of restitution between the rod and the ground is e = 0.8, determine the angular velocity of the rod immediately after the impact.
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