In recursive systems, which of the following is caused because of the nonlinearities due to the finite-precision arithmetic operations?

Which of the following rule is used in the bilinear transformation in context to filter design ?

 What is the ROC of z-transform of an two sided infinite sequence?

In IIR Filter design by the Bilinear Transformation, the Bilinear Transformation is a mapping from

In A/D converter, what is the time relation between sampling period T and the duration of the sample mode and the hold mode?

Which of the following is not a technique for fabrication of glass fibers?

Consider a step- index optical fiber with n1 = 1.49, n2 = 1.48 and a = 4 μm. Calculate the number of modes (without including degeneracies) at 1 μm wavelength.

If 3.8317 < V < 5.1356, then the possible modes are

Given core radius =4.5μm, core and cladding refractive indices n1=1.41 and n2=1.40. assuming an operating wavelength of 1550 nm. Find the numerical aperture assuming that the fiber is kept in air.

How many speech signals can be sent simultaneously with 8 GHz bandwidth analog communication system?

A step index multimode fiber with NA = 0.3 supports approximately 1000 modes at 980 nm wavelength. What is the core diameter?
 

The photocurrent of an optical detector should be __________

The electron hole pairs generated in a photodiode are separated by the ____________
 

 What is the hierarchy of the process at the receiving end of the cut-back technique?
 

 __________ dictates the performance characteristics required from components and devices which are to be utilized in coherent optical fiber systems.
 

Coherent optical transmission is degraded by the ________ associated with the transmitter and local oscillator lasers.
 

Which technique was started for narrowing of injection laser line widths?
 

______________ is the progressive spatial separation between the two polarization modes as they propagate along the fiber.
 

Which of the following is not a metallic impurity found in glass in extrinsic absorption?
 

How the potential macro bending losses can be reduced in case of multimode fiber?
 

Rayleigh scattering and Mie scattering are the types of _____________
 

Raman and Brillouin scattering are usually observed at ___________
 

0.4 dB/km, 1.4μm, 6μm, 550MHz. Find threshold optical power for stimulated Raman scattering.
 

Consider a single mode fiber having core refractive index n1= 1.5. The fiber length is 12m. Find the time taken by the axial ray to travel along the fiber.
 

A 4 km optical link consists of multimode step index fiber with core refractive index of 1.3 and a relative refractive index difference of 1%. Find the delay difference between the slowest and fastest modes at the fiber output.