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Showing posts from March 7, 2021Show all
 What does micro-bending losses depend on _____________
  How many forms of modal power distribution are considered?
 Microscopic meandering of the fiber core axis that is micro-bending is caused due to ___________
 ____________ results from small lateral forces exerted on the fiber during the cabling process.
 The phenomenon which occurs when an incident wave strikes an interface at an angle greater than the critical angle with respect to the normal to the surface is called as ____________
 What is refraction?
 Which is the most important velocity in the study of transmission characteristics of optical fiber?
 A monochromatic wave propagates along a waveguide in z direction. These points of constant phase travel in constant phase travel at a phase velocity V p is given by?
When light is described as an electromagnetic wave, it consists of a periodically varying electric E and magnetic field H which are oriented at an angle?
Constructive interference occur when total phase change after two successive reflections at upper and lower interfaces is equal to? (Where m is integer)
When λ is the optical wavelength in vacuum, k is given by k=2Π/λ. What does k stand for in the above equation?
  Which equations are best suited for the study of electromagnetic wave propagation?
 Planar waveguides are used to produce _______ coupler.
    The linear variation of refractive index with the electric field is known as the ________
    A passive Y-junction beam splitter is also used as a switch.
 A passive Y-junction beam splitter is fabricated from __________
 Propagation losses in slab and strip waveguides are smaller than the single mode fibre losses.
 Strip pattern in waveguide structures is obtained through ____________
Passive devices are fabricated by __________ technique.
 Which of the following materials have refractive index near two?
Which of the following devices are less widely used in the field of optical fibre communications?
The planar waveguides may be fabricated from glasses and other isotropic materials such as ___________ and ______________
 ___________ waveguides are plagued by high losses.
What does h ff stands for in the equation h ff = h+x+x2?