Q. For many applications that involve optical fiber transmission, an intensity modulation optical source is not required.

View solution

Q. The optical source used for detection of optical signal is ____________

View solution

Q. An optical fiber behaves as a birefringence medium due to differences in ___________

View solution

Q. The beat length in a single mode optical fiber is 8 cm when light from a laser with a peak wavelength 0.6 μm is launched into it. Estimate the modal birefringence.

View solution

Q. Beat length of a single mode optical fiber is 0.6 cm. Calculate the difference between propagation constants for the orthogonal modes.

View solution

Q. A polarization maintaining fiber operates at a wavelength 1.2 μm and have a modal birefringence of 1.8*10⁻³. Calculate the period of perturbation.

View solution

Q. When two components are equally excited at the fiber input, then for polarization maintaining fibers δΓg should be around ___________

View solution

Q. Polarization modal noise can _________ the performance of communication system.

View solution

Q. The nonlinear effects in optical fibers are large.

View solution

Q. How many categories of nonlinear effects are seen in optical fibers?

View solution

Q. Which of the following is not related to Kerr effects?

View solution

Q. Linear scattering effects are _______ in nature.

View solution

Q. Which thing is more dominant in making a fiber function as a bidirectional optical amplifier?

View solution

Q. _________ semiconductor laser sources generally have broader bandwidths.

View solution

Q. Nonlinear effects which are defined by the intensity – dependent refractive index of the fiber are called as ________

View solution

Q. Self-phase modulation causes modifications to the pulse spectrum.

View solution

Q. Self-phase modulation can be used for _____________

View solution

Q. The beating between light at different frequencies or wavelengths in multichannel fiber transmission causes ________

View solution

Q. What is different in case of cross-phase modulation from self-phase modulation?

View solution

Q. When three wave components co-propagate at angular frequency w1, w2, w3, then a new wave is generated at frequency w4, which is given by?

View solution