Modes of a Rectangular Dielectric Waveguide. A rectangular dielectric waveguide has a square cross section of area 10-2 mm2 and numerical aperture NA = 0.1. Use (8.3-3) to plot the number of TE modes as a function of frequency v. Compare your results with Fig. 8.2-4.

The accuracy and stability oT the oscillator. Depending on the application, frequency accuracy and StUbllily mu) be specified in hertz or as a percentage of the operating frequency Etel Example 8.1 frequency could its output be at 27 MHz? fa 27 *166 * *•005 =/350 HZ = 0.00135 MHZ A crystal oscillator is accurate within 0.005%. How far off %3D 100 27.00135MHZ

2. A phase retardation plate ade by quartz has thickness 0.1436 mm. For what wavelength in the visible range (400- 750nm) it will act as (i) quarter-wave plate & (ii) half wave plate? Given µ,= 1.5443 and pH=1.5533. [Ans: 738.6nm, 574.4 nm, 470 nm for QWP and 517 nm for HWP.] [CO3]

A sinusoidal voltage trace displayed by an oscilloscope is shown, if the 'time/div' or Hs, switch is set to 0.2 µs/div and the 'volts/div' Vs, switch is set to 50 mV/div, from the waveform, the frequency and the maximum voltage of the sinusoid is * e- 12.5 MHz and 0.1 V 0.125 GHz and 1000 μV 1.25 MHz and 100 mV 12.5 MHz and 0.1 mV ||||||||||||||||||

this question is related to optoelectronics. Define a wavevector and give its mathematical relation.

Example Light wave with A, = 5nm passes into fiber cable with n, = 2.4. Find the wave's speed and wavelength in the fiber. %3D ans: v = 1.25x10% m/s 1 = 2.08 nm

1. Determine the Q-factor of a 4MHz crystal with the following values: L=100mH, R=100Ω, C=0.015pF, and mounting capacitance (Cm)=5pF. A. 24000B. 25000C. 26000D. 27000 2. Calculate the series-resonant frequency of the crystal described in #1. A. 4.1 MHzB. 225 kHzC. 224.74 kHzD. 5.12 MHz 3. Calculate the parallel-resonant frequency of the crystal described in #2. A. 4.12 MHzB. 224 kHzC. 310 kHzD. 3.66 MHz

Calculate the following: a. When the optical power incident on a photodiode is 9 μW and the responsivity is 0.8 A/W, what is the photocurrent generated (in μA) ? b. Determine incident optical power on a photodiode if it has photocurrent of 2.5 μA and responsivity of 0.55 A/W. c. Determine wavelength of photodiode having quantum efficiency of 350% and Responsivity of 0.304 AW-1.

According to the book the answer is 29.8

A flat luminaire with dimensions 1.2 x 0.2m is mounted in a ceiling. The fixture has an opal plastic plate at the bottom, and can be considered ideal diffused. On a wall in the room there is a picture with dimensions 0.4m x 0.4m, as shown in the figure. The measurements apply from the midpoint of fixture and picture. The luminous flux of the light source is 6200 lm. The luminous intensity normally from the bottom of the luminaire is 1400 cd. a) Determine the luminous flux going out of the luminaire. What is the luminaire's efficiency?