discuss modal propagation in optical fibers



discuss modal propagation in optical fibers
The following statement applies to multimode graded-index fibers: a. Multimode graded-index fibers produce less modal pulse distortion than multimode step-index fibers b. Multimode graded-index fibers produce more modal pulse distortion than multimode step-index fibers c. Multimode graded-index fibers produce equal modal pulse distortion than multimode step-index fibers
The fibers mostly not used nowadays for optical fiber communication system are a. Single mode fibers b. Multimode step fibers c. Coaxial cables d. Multimode graded index fibers
Combining optical fibers into a network requires some important components, one of which is the optical switch. answer the following questions:a) What is the role of this component?b) How does it perform its task? Provide a sketch to illustrate your explanation.
An instance of innovation in services is ________. a. Optical fibers b. Internet banking c. Smart tags d. Customer satisfaction surveys
Discuss modal dispersion as it relates to single-mode and multimode cables.
components of some computers communicate with each other through optical fibers having an index of refaction n=1.55 What time in nanoseconds is required for a signal to travel 0.200 m through such a fiber? please sketch drawing or free body diagram of problem
Laser power losses in optical fibers are due to either intrinsic or extrinsic factors. • What is the difference between intrinsic and extrinsic losses? • Fresnel losses are caused by inevitable reflections at the interface of the fiber, increasing with the difference between the core index of refraction and that of the outside medium. Explain why this is considered an extrinsic loss and not an intrinsic one?
Part A: Optical fibers allow the fast transmission of vast amounts of data. In one type of fiber, the wavelength of transmitted light is 6700 nm. What is the frequency of the light? Express your answer to two significant figures and include the appropriate units. Part B: Fiber optic cable is available in 12 km lengths. How long will it take for a signal to travel that distance assuming that the speed of light in the cable is the same...
Please answer 4 question, tks 2.Explain the concept of total internal reflection and how it is important in optical communications. 3.Discuss the differences between single mode, multimode and graded index fibres. 6.What is meant by attenuation in optical fibers? 7.State the two ways in which energy is lost along the length of an optical fiber.