What are the main causes of absorption in optical fiber?

What are the main causes of absorption in optical fiber?
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1 Answer

Answer :

Intrinsic and extrinsic material properties.
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Related questions

Explain absorption loss and scattering loss occurs in optical fiber.

Description : Explain absorption loss and scattering loss occurs in optical fiber.

Last Answer : Scattering loss:- Basically, scattering losses are caused by the interaction of light with density fluctuations within a fiber. Density changes are produced when optical fibers are manufactured.  ... glass material. iii. Intrinsic absorption by the basic constituent atoms of the fiber material.

Which type of optical splitter (Y-coupler or T-coupler) splits only a small amount of power from the input fiber to one of the output fibers?

Description : Which type of optical splitter (Y-coupler or T-coupler) splits only a small amount of power from the input fiber to one of the output fibers?

Last Answer : T-coupler

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 is the basic fiber cleaving technique for preparing optical fibers for coupling?

Description : What is the basic fiber cleaving technique for preparing optical fibers for coupling?

Last Answer : Score-and-break.

Quality fiber-end preparation is essential for proper system operation. What properties must an optical fiber-end face have to ensure proper fiber connection?

Description : Quality fiber-end preparation is essential for proper system operation. What properties must an optical fiber-end face have to ensure proper fiber connection?

Last Answer : Be flat, smooth, and perpendicular to the fiber axis.

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.

The amount of optical power coupled into an optical fiber depends on what four factors?

Description : The amount of optical power coupled into an optical fiber depends on what four factors?

Last Answer : (1) The angles over which the light is emitted. (2) The size of the source's light-emitting area relative to the fiber core size. (3) The alignment of the source and fiber. (4) The coupling characteristics of the fiber (such as the NA and the refractive index profile)

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.

Describe an optical fiber cable component (OFCC).

Description : Describe an optical fiber cable component (OFCC).

Last Answer : OFCCs are tight-buffer fiber surrounded by arimid yarn and a low-halogen outer jacket.

Give two reasons why optical fiber manufacturers depart from the traditional circular core and cladding, low-loss glass fiber design?

Description : Give two reasons why optical fiber manufacturers depart from the traditional circular core and cladding, low-loss glass fiber design?

Last Answer : To increase performance and reduce cost

Multimode optical fibers can have a step-index or graded index refractive index profile. Which fiber, multimode step-index or multimode graded-index fiber, usually performs better?

Description : Multimode optical fibers can have a step-index or graded index refractive index profile. Which fiber, multimode step-index or multimode graded-index fiber, usually performs better?

Last Answer : Multimode graded-index fiber

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).

If an installed optical fiber cable does not have connectors or terminations on both ends, how should the cable be tested?

Description : If an installed optical fiber cable does not have connectors or terminations on both ends, how should the cable be tested?

Last Answer : With an OTDR unless it is less than 50 meters in length. If it is less than 50 meters in length, continuity should be verified with a flashlight.

When is an optical power meter measurement recommended for conducting field measurements on installed optical fiber cables or cable plants?

Description : When is an optical power meter measurement recommended for conducting field measurements on installed optical fiber cables or cable plants?

Last Answer : When an installed optical fiber cable or cable plant is less than 50 meters in length.

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).

A mode filter is a device that attenuates specific modes propagating in the core of an optical fiber. What mode propagating along single mode fibers do mode filters eliminate?

Description : A mode filter is a device that attenuates specific modes propagating in the core of an optical fiber. What mode propagating along single mode fibers do mode filters eliminate?

Last Answer : Second-order mode.

optical launch conditions exists if the launch spot size and angular distribution are larger than that of the fiber core?

Description : optical launch conditions exists if the launch spot size and angular distribution are larger than that of the fiber core?

Last Answer : Overfilled.

Does underfilling a multimode optical fiber excite mainly high-order or low-order modes?

Description : Does underfilling a multimode optical fiber excite mainly high-order or low-order modes?

Last Answer : Low-order modes.

What type of optical fiber operates below the cutoff

Description : What type of optical fiber operates below the cutoff

Last Answer : The order of a mode is indicated by the number of field maxima within the core of the fiber. The order of a mode is also determined by the angle that the wavefront makes with the axis of the fiber

A light ray incident on the optical fiber core is propagated along the fiber. Is the angle of incidence of the light ray entering the fiber larger or smaller than the acceptance angle

Description : A light ray incident on the optical fiber core is propagated along the fiber. Is the angle of incidence of the light ray entering the fiber larger or smaller than the acceptance angle

Last Answer : Smaller.

List the three parts of an optical fiber.

Description : List the three parts of an optical fiber.

Last Answer : Core, cladding, and coating or buffer.

The index of refraction measures the speed of light in an optical fiber. Will light travel faster in an optically dense material or in one that is less dense?

Description : The index of refraction measures the speed of light in an optical fiber. Will light travel faster in an optically dense material or in one that is less dense?

Last Answer : Light will travel faster in an optical material that is less dense.

What is the basic optical-material property relevant to optical fiber light transmission?

Description : What is the basic optical-material property relevant to optical fiber light transmission?

Last Answer : The index of refraction.

Two methods describe how light propagates along an optical fiber. These methods define two theories of light propagation. What do we call these two theories?

Description : Two methods describe how light propagates along an optical fiber. These methods define two theories of light propagation. What do we call these two theories?

Last Answer : The ray theory and the mode theory.

Low-order and high-order modes propagate along an optical fiber. How are modes determined to be low-order or high order modes?

Description : Low-order and high-order modes propagate along an optical fiber. How are modes determined to be low-order or high order modes?

Last Answer : Depends on the bending caused by the velocity difference of the wave traveling through different mediums

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.

In 1969, what did several scientists conclude about optical fiber loss?

Description : In 1969, what did several scientists conclude about optical fiber loss?

Last Answer : mpurities in the fiber material caused the signal loss in optical fibers. The basic fiber material did not prevent the light signal from reaching the end of the fiber.

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

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

Last Answer : Scattering, absorption, and dispersion.

The main hardware components of a graphics workstation are …………… A. Thick coax, optical fiber B. twisted pair , thin coax C. twisted, optical fiber D. Thick coax, Thin coax

Description : The main hardware components of a graphics workstation are …………… A. Thick coax, optical fiber B. twisted pair , thin coax C. twisted, optical fiber D. Thick coax, Thin coax

Last Answer : D. Thick coax, Thin coax

What is the main loss mechanism between the ultraviolet and infrared absorption regions?

Description : What is the main loss mechanism between the ultraviolet and infrared absorption regions?

Last Answer : Rayleigh scattering.

In fiber-to-fiber connections, Fresnel reflection is one source of coupling losses. Light is reflected back into the source fiber and is lost. What causes Fresnel reflection?

Description : In fiber-to-fiber connections, Fresnel reflection is one source of coupling losses. Light is reflected back into the source fiber and is lost. What causes Fresnel reflection?

Last Answer : A step change in refractive index that occurs at fiber joints, caused by fiber separation.

Modes of a light pulse that enter the fiber at one time exit the fiber at different times. This condition causes the light pulse to spread. What is this condition called?

Description : Modes of a light pulse that enter the fiber at one time exit the fiber at different times. This condition causes the light pulse to spread. What is this condition called?

Last Answer : Modal dispersion.

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.

Fibre optics work on the principle of – (1) Scattering of light (2) Total internal absorption (3) Total internal reflection (4) Optical rotation

Description : Fibre optics work on the principle of – (1) Scattering of light (2) Total internal absorption (3) Total internal reflection (4) Optical rotation

Last Answer : (3) Total internal reflection Explanation: An optical fiber (or optical fibre) is a flexible, transparent fiber made of glass (silica) or plastic, slightly thicker than a human hair. It ... science and engineering concerned with the design and application of optical fibers is known as fiber optics.

The optical property of a water body depends on: (A) Absorption by the dissolved material (B) Absorption by the suspended particulate matter (C) Scattering by the suspended particulate matter (D) All of these

Description : The optical property of a water body depends on: (A) Absorption by the dissolved material (B) Absorption by the suspended particulate matter (C) Scattering by the suspended particulate matter (D) All of these

Last Answer : Answer: Option D

Fibre optics work on the principle of (1) scattering of light (2) total internal absorption (3) total internal reflection (4) optical rotation

Description : Fibre optics work on the principle of (1) scattering of light (2) total internal absorption (3) total internal reflection (4) optical rotation

Last Answer :  total internal reflection

Identify the fastest wired media out of the following: Ethernet cable, Optical fiber, Co_axial cable -Technology

Description : Identify the fastest wired media out of the following: Ethernet cable, Optical fiber, Co_axial cable -Technology

Last Answer : Optical fiber

How to get data with optical fiber ?

Description : How to get data with optical fiber ?

Last Answer : Optical fiber (optical fiber ) is a type of thin , transparent fiber , usually made of glass or plastic , which is used to transmit light. Fiber optics is the branch of applied science and engineering that ... In this way our information goes to the recipient through the light fiber.

Optical fiber cable is more suitable in wired media- ?

Description : Optical fiber cable is more suitable in wired media- ?

Last Answer : Optical fiber cable is more suitable in wired media. Because optical fiber cable is a type of cable made of thousands of glass fibers through which data is transmitted at the speed of light. Laser beams are used to transfer data through this cable.

What is the use of optical fiber in health ?

Description : What is the use of optical fiber in health ?

Last Answer : To examine the inner wall of a patient's stomach, a light tube is inserted into the stomach through the mouth. One set of these light tubes illuminates the corresponding part of the stomach wall by sending ... of the blood vessels or the valves of the heart can be seen by inserting the light tube.

What is the refractive index of optical fiber material ?

Description : What is the refractive index of optical fiber material ?

Last Answer : The refractive index of optical fiber material is 1.7 .

What happens to light in optical fiber ?

Description : What happens to light in optical fiber ?

Last Answer : Full optical reflection of light occurs in optical fiber.

Where is the optical fiber used ?

Description : Where is the optical fiber used ?

Last Answer : Optical fiber is used to observe any part of the human body.

What is Optical Fiber Made of ?

Description : What is Optical Fiber Made of ?

Last Answer : Optical fiber is a type of thin , transparent fiber , usually made of glass or plastic , which is used to transmit light.

In which district is the only optical fiber manufacturer of Bangladesh located ?

Description : In which district is the only optical fiber manufacturer of Bangladesh located ?

Last Answer : The only optical fiber manufacturer in Bangladesh is located in Khulna district.

What is observed in optical fiber ?

Last Answer : Optical fiber has full internal reflection

What is Optical Fiber ?

Last Answer : : Optical fiber is a type of fine glass fiber. It is as thin and flexible as hair. It is used to carry light rays.

Optical Fiber What ?

Last Answer : Optical Fiber Holo - glass Or Of plastic Too much Narrow , long Flexible But Solid Fiber Or Fiber. One Place From Other In place Electric Signal Exchange Of payment For Optical Fiber Use To do Is.

Optical Fiber Optical fibers are the fine strands of _____. A. Glass B. Iron C. Calcium D. Mercury

Description : Optical Fiber Optical fibers are the fine strands of _____. A. Glass B. Iron C. Calcium D. Mercury

Last Answer : ANSWER: A

Which of the following is used as an optical receiver in fiber optics communications a. APD b. Tunnel diode c. Laser diode d. LED

Description : Which of the following is used as an optical receiver in fiber optics communications a. APD b. Tunnel diode c. Laser diode d. LED

Last Answer : a. APD