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1) Two slits are illuminated by light that consists of two w...

1) Two slits are illuminated by light that consists of two wavelengths. One wavelength is known to be 436 nm. On a screen, the fourth minimum of the 436 nm light coincides with the third maximum of the other light. What is the wavelength of the other beam? 2) In a Young's experiment, narrow doubl...

Use Mueller matrices to construct a single matrix that repre...

Use Mueller matrices to construct a single matrix that represents the left-handed circular polarizer shown below. Show that it passes left-circularly polarized light, but is opaque to right circularly polarized light. A B Linear polarizer 90° retarder

2) Consider a uniform fibre Bragg grating (FBG) written in s...

2) Consider a uniform fibre Bragg grating (FBG) written in silica fibre, of length Lgr = 7mm, effective periodic index modulation δn = 10‾⁴, and Bragg wavelength λB = 1550nm. a. Calculate the value of the coupling coefficient K, in the FBG. (in units of m‾¹ b. Co...

2) Consider a uniform fibre Bragg grating (FBG) written in s...

2) Consider a uniform fibre Bragg grating (FBG) written in silica fibre, of length Lgr = 7mm, effective periodic index modulation δn = 10‾⁴, and Bragg wavelength 𝜆B = 1550nm. a. Calculate the value of the coupling coefficient 𝜅, in the FBG. (in units of m‾¹) b. Cons...

Section questions 1) Explain why x² for any uniform gl...

Section questions 1) Explain why x² for any uniform glass (in the dipole approximation). 2) You havebeen given nonlinear crystal with x(2) 0. Explain whether the material will demonstrate the Pockels effect or the Kerr effect. 3) Amaterialwith x(3) as the lowest order nonlinearity will driv...

The Laser Amplifier Problem 1.1 A HeNe laser at a waveleng...

The Laser Amplifier Problem 1.1 A HeNe laser at a wavelength of 632.8 nm emits ImW of light in a continuous beam (known as 'cw' or continuous-wave lasing) a) Calculate the stimulated emission rate ins b) Estimate the population in m² of Ne atoms in the upper laser level, assuming that the...

Part A [20 marks] A1) Assume that a laser pulse (carrier wa...

Part A [20 marks] A1) Assume that a laser pulse (carrier wavelength um, bandwidth Ah=5 nm) is launched into a 100 kmlong fibre with dispersion D=17 ps/(nm.km). What is its pulse duration at the output? Afterwards you want to compress the pulse to its original length by sending the pulse through ...

Section A 1. Do amorphous materials display the phenomenon ...

Section A 1. Do amorphous materials display the phenomenon of polymorphism? Why or why not (Explain very briefly)? [2] 2. Very briefly discuss two similarities and two differences between photons and phonons [3] 3. The loss of an optical fibre is measured by the cutback technique. The output p...

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