What effect does noise have on the fiber optic signal?

What effect does noise have on the fiber optic signal?
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1 Answer

Answer :

Noise obscures or reduces the quality of the signal.
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Related questions

Fiber optic connectors can reduce system performance by increasing what two types of noise?

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Last Answer : Modal and reflection.

Which part of a fiber optic transmitter converts the processed electrical signal to an optical signal?

Description : Which part of a fiber optic transmitter converts the processed electrical signal to an optical signal?

Last Answer : The optical source.

An advantage of optic fiber rejecting an induced noise signals from magnetic field or solar storms flux. A. Electric hazard B. Cross talk C. Immunity to noise D. Shielding

Description : An advantage of optic fiber rejecting an induced noise signals from magnetic field or solar storms flux. A. Electric hazard B. Cross talk C. Immunity to noise D. Shielding

Last Answer : C. Immunity to noise

What is the difference between passive and active fiber optic couplers?

Description : What is the difference between passive and active fiber optic couplers?

Last Answer : Passive couplers redistribute optical signals without optical-to electrical conversion.

The Navy classifies fiber optic connectors in what two ways?

Description : The Navy classifies fiber optic connectors in what two ways?

Last Answer : Light-duty and heavy-duty connectors.

Which type of fiber optic connector (butt-jointed or expanded beam) brings the prepared ends of two optical fibers into close contact?

Description : Which type of fiber optic connector (butt-jointed or expanded beam) brings the prepared ends of two optical fibers into close contact?

Last Answer : Butt-jointed connectors.

What connection properties result in fiber optic connector coupling loss?

Description : What connection properties result in fiber optic connector coupling loss?

Last Answer : Poor fiber alignment and end preparation, fiber mismatches, and Fresnel reflection.

Define a fiber optic splice.

Description : Define a fiber optic splice.

Last Answer : A permanent fiber joint whose purpose is to establish an optical connection between two individual optical fibers.

Which types of LEDs are the preferred optical sources for short-distance, low-data-rate fiber optic systems?

Description : Which types of LEDs are the preferred optical sources for short-distance, low-data-rate fiber optic systems?

Last Answer : SLEDs and ELEDs.

Which fiber optic component (splice, connector, or coupler) makes a permanent connection in a distributed system?

Description : Which fiber optic component (splice, connector, or coupler) makes a permanent connection in a distributed system?

Last Answer : Splice.

List five common fiber optic transmitter packages.

Description : List five common fiber optic transmitter packages.

Last Answer : TO can, DIP, butterfly lead microcircuits, circuit cards, and stand-alone optical fiber converters.

What are the two types of output interfaces for fiber optic transmitters?

Description : What are the two types of output interfaces for fiber optic transmitters?

Last Answer : Optical connectors and optical fiber pigtails.

What are the three parts of a fiber optic transmitter?

Description : What are the three parts of a fiber optic transmitter?

Last Answer : Interface circuit, source drive circuit, and an optical source.

What are the two basic types of preamplifiers used in fiber optic receivers?

Description : What are the two basic types of preamplifiers used in fiber optic receivers?

Last Answer : The high-impedance amplifier and the transimpedance amplifier.

Why is detector saturation not generally a problem in fiber optic communications systems?

Description : Why is detector saturation not generally a problem in fiber optic communications systems?

Last Answer : Because fiber optic communications systems operate at low optical power levels.

List the two principal optical detectors used in fiber optic systems.

Description : List the two principal optical detectors used in fiber optic systems.

Last Answer : The semiconductor positive-intrinsic-negative (PIN) photodiode and avalanche photodiode (APD).

What is a fiber optic receiver?

Description : What is a fiber optic receiver?

Last Answer : An electro-optic device that accepts optical signals from an optical fiber and converts them into electrical signals

List the types of fiber optic components considered part of a fiber optic cable plant.

Description : List the types of fiber optic components considered part of a fiber optic cable plant.

Last Answer : Optical fiber cables, connectors, splices, mounting panels, jumper cables, and other passive components.

List five precautions to take when installing fiber optic systems on board naval ships.

Description : List five precautions to take when installing fiber optic systems on board naval ships.

Last Answer : a. Never bend an optical fiber or cable at a radius of curvature less than the minimum bend radius. b. Never pull fiber optic cables tight or fasten them over or through sharp corners or ... the hardware. e. Allow only trained, authorized personnel to install or repair fiber optic systems.

Why is it generally only necessary to refer to point-to-point data links when discussing the process of fiber optic system design?

Description : Why is it generally only necessary to refer to point-to-point data links when discussing the process of fiber optic system design?

Last Answer : Because fiber optic systems that incorporate complex architectures can be simplified into a collection of point-to-point data links before beginning the design process.

What type of modulation do most analog fiber optic communications systems use?

Description : What type of modulation do most analog fiber optic communications systems use?

Last Answer : Intensity modulation.

List four system topologies that can be constructed using point-to-point fiber optic links.

Description : List four system topologies that can be constructed using point-to-point fiber optic links.

Last Answer : Linear bus, ring, star, and tree topologies.

What is the main disadvantage of using fiber-optic cables?

Description : What is the main disadvantage of using fiber-optic cables?

Last Answer : High attenuation.

In fiber optic systems, designers consider what trade-offs?

Description : In fiber optic systems, designers consider what trade-offs?

Last Answer : Trade-offs in fiber properties, types of connections, optical sources, and detector types in military and subscriber-loop applications.

List the three parts of a fiber optic data link

Description : List the three parts of a fiber optic data link

Last Answer : Transmitter, optical fiber, and receiver.

Describe the basic functions of a fiber optic data link

Description : Describe the basic functions of a fiber optic data link

Last Answer : The basic functions of a fiber optic data link are to convert an electrical input signal to an optical signal, send the optical signal over an optical fiber, and convert the optical signal back to an electrical signal.

In a fiber-optic cable, the signal is propagatedalong theinner core by _______. A) reflection B) refraction C) modulation D) none of the above

Description : In a fiber-optic cable, the signal is propagatedalong theinner core by _______. A) reflection B) refraction C) modulation D) none of the above

Last Answer : reflection

Which performance parameter is the minimum amount of optical power required to achieve a specific bit-error rate (BER) in digital systems or a given signal-to-noise ratio (SNR) in analog systems?

Description : Which performance parameter is the minimum amount of optical power required to achieve a specific bit-error rate (BER) in digital systems or a given signal-to-noise ratio (SNR) in analog systems?

Last Answer : Receiver sensitivity.

Two tape recorders have signal-to-noise ratios (SNRs) of 25-dB RMS and 35-dB RMS respectively. Which of the SNRs can record and reproduce the widest range of input signals and why?

Description : Two tape recorders have signal-to-noise ratios (SNRs) of 25-dB RMS and 35-dB RMS respectively. Which of the SNRs can record and reproduce the widest range of input signals and why?

Last Answer : 35-dB RMS because the highest SNR can always record and reproduce the widest range of input signals.

What type of tape error causes noise to appear on the tape when no signal should appear? What causes this type of tape error?

Description : What type of tape error causes noise to appear on the tape when no signal should appear? What causes this type of tape error?

Last Answer : Noise error is usually caused by a cut or a scratch on the magnetic tape.

Why does adding dc vice ac bias voltage to the input signal result in a poor signal-to-noise ratio (SNR)?

Description : Why does adding dc vice ac bias voltage to the input signal result in a poor signal-to-noise ratio (SNR)?

Last Answer : With dc bias, the SNR is poor because only a small portion of the magnetism curve is straight enough to use, thus the output signal is weak compared with the natural tape hiss.

If the length of the fiber point defect changes with pulse duration, is the OTDR signal deviation a point defect or a region of high fiber attenuation?

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Last Answer : A point defect.

Delay differences between the source wavelengths occur as the optical signal propagates along the fiber. What is this called?

Description : Delay differences between the source wavelengths occur as the optical signal propagates along the fiber. What is this called?

Last Answer : Differential group delay t(l).

Which type of optical fiber (multimode or single mode) tends to have lower loss and produces less signal distortion?

Description : Which type of optical fiber (multimode or single mode) tends to have lower loss and produces less signal distortion?

Last Answer : Single mode fiber.

What mechanisms in the fiber waveguides weaken and distort the optical signal?

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Last Answer : Scattering, absorption, and dispersion.

Light travels faster in a material with a lower refractive index. Therefore, light rays that travel a longer distance in a lower refractive index travel at a greater average velocity. What effect does this have on multimode graded-index fiber modal dispersion and bandwidth?

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Last Answer : Decreases the time difference between light rays, which reduces modal dispersion and increases fiber bandwidth.

Deemphasis in the receiver in effect attenuates modulating signal components and noise in what frequency range? A. dc B. low C. intermediate D. high

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What is the effect in over modulated amplitude modulated radio broadcasting transmission? A. Interference to adjacent channel B. Higher fidelity C. Increase noise D. Higher audio signal

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If the input-signal-developing impedance of an amplifier is increased, what is the effect on the gain?

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When a large signal and a small signal are applied to a lin log amplifier at the same time, what is the effect on the small signal?

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Last Answer : Amplification is reduced.

rid-leak biasing in effect rectifies the input ac signal. What feature

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When will fiber optic cable be cheaper?

Description : When will fiber optic cable be cheaper?

Last Answer : Prices on my optic cable since update have stayed the same BUT the speed is six or seven times as faster.

What is the best fiber optic internet company?

Description : What is the best fiber optic internet company?

Last Answer : Verizon FiOS & Verizon Broadband Services offer blazing speed & crystal clarity of the 100% fiber optic Fios network & proven reliability for their TV, internet & phone products that will exceed your ... link below:ht tps://yaz ing .com/deals/verizon/SandroSalomonremove the blanks from the link

Why Fiber Optic Cable is Safe in Data Transport ?

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Last Answer : Optical fiber cable is safe for data transfer. It is a coating made of plastic or other materials , which protects the fiber from moisture , abrasion , sprains and other natural disasters. With ... Due to the high electrical resistance, this cable can be used with high voltage electrical equipment.

What are the insulators used to make fiber optic cable ?

Description : What are the insulators used to make fiber optic cable ?

Last Answer : The insulators used to make fiber optic cable are Silicon Dioxide and Muli Component Glass (Soda Boro Silicet , NaOH Silicet etc.).

Why does fiber optic cables transmit light?

Description : Why does fiber optic cables transmit light?

Last Answer : bc it does

What is fiber optic equipment and what does it do?

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Last Answer : Fiber optic equipment may refer to equipment used to manufacture fiber optic cable. It may also refer to equipment that uses fiber optic cable, such as some telecommunication firms and DSL ... market are the connectivity fiber optic connection. It makes going online much faster and easier.

How can I learn to build fiber optic equipment?

Description : How can I learn to build fiber optic equipment?

Last Answer : You will need special technical trainig to work with fiberoptics. You can get training information at www.thefoa.org.

What kinds of professions should I look into if I am interested in fiber optic equipment?

Description : What kinds of professions should I look into if I am interested in fiber optic equipment?

Last Answer : Professions you might be interested in are Telecom's engineering and also Network engineering. other good options would be telecoms or network technicians.

Can fiber optic cable be used for transmitting light from a source to another point around the opaque object?

Description : Can fiber optic cable be used for transmitting light from a source to another point around the opaque object?

Last Answer : Fiber Optic is normally used for carrying data as light; I doubt it'd be useful for actually transmitting coherent light.