The optical source used in a fiber is an injection laser with a relative spectral width σλ/λ of 0.0011 at a wavelength of 0.70μm. Estimate the RMS spectral width.

In optical fiber light propagated in the

) An optical fiber has a core refractive index of 1.4. Two lengths of thefiber with smooth and perpendicular (to the core axes) end faces arebutted together. Assuming the fiber axes are perfectly aligned, calculatethe optical loss in decibels at the joint (due to Fresnel reflection) whenthere is a small air gap between the fiber end faces. ---- 2 marks

A multimode step-index fiber has a core refractive index of 1.5 and relative refractive index difference of 1%. The length of the optical link is 6 km. Estimate the RMS pulse broadening due to intermodal dispersion on the link.a. a.86.7 nsb. b.69.3 nsc. c.92.6 nsd. d.68.32 ns

What is the wavelength range corresponding to C-band transmission in optical fibres?

A 0.1 watt LASER beam with an aperture of 5.0 mm emits light of wavelength 6943 Å.Calculate the areal spread and intensity of the image when the beam is focused with the lenshaving a focal length of 100 mm.