Homework Answers
a) Optical frequency combs are coherent sources whose spectrum contains equidistant, discrete frequency lines.
b)Optical frequency combs are generally generated using mode-locked ultrafast femtosecond lasers.Since the spectrum contains a number of equidistant, discrete frequency lines, so simultaneous measurement of molecular/ionic species can be performed.
c)Carrier envelope phase is the relative phase difference between peak of the envelope and the maximum of the carrier wave.
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For optical frequency combs, answer the following questions: a) What are optical frequency combs? b) How...
7. A mode-locked Ti:Al203 laser with a cavity length of 1.5m and center wavelength of 790nm is used for optical frequency metrology. If the pulse duration is 20fs, and the laser has a hyperbolic seca...
7. A mode-locked Ti:Al203 laser with a cavity length of 1.5m and center wavelength of 790nm is used for optical frequency metrology. If the pulse duration is 20fs, and the laser has a hyperbolic secant square pulse profile a) Estimate the frequency bandwidth of the laser output.HINT: AtAf0.315 b) Estimate the number of modes in the laser output. c) If the pulse to pulse carrier envelope phase changes by 0.1rad, calculate the carrier offset frequency shift HINT: ΔωςΕ-ter d) What...
Problem 92. A) Why do pulses that enter an optical fiber at the same time but...
Problem 92. A) Why do pulses that enter an optical fiber at the same time but at different angles, exit the fiber at dif- ferent times? B) Would a pulse in an optical fiber spread if the wave speed was the same for all frequency components? Briefly justify your answer. Problem 93. Do some internet research and then answer the following questions. A) What are the carrier frequencies and bandwidths associated with the 802.11ac wireless internet (WiFi) standard? B) What...
For each of the following questions on optical spectra and spectroscopy, please provide answers no longer...
For each of the following questions on optical spectra and spectroscopy, please provide answers no longer than 3 lines. (a) (2 marks) Describe how emission lines can be used as a diagnostic for gas temperature. (b) (2 marks) Describe how a continuum spectrum can be used as a temperature diagnostic (c) (2 marks) If a continuum spectrum peaks at 100 ?m wavelength, what is the approximate temperature of the source? An order of magnitude answer will suffice. (d) (2 marks)...
Answer the following questions: a) Explain what the frequency spectrum of a signal is (remember that...
Answer the following questions: a) Explain what the frequency spectrum of a signal is (remember that the frequency spectrum is two graphs). b) What's FFT? c) What is the analysis in the frequency domain of a signal? What differences exist with respect to time domain d) Generally, what type of signals do we find in nature (continuous or discrete) and what type of signals do computer systems use (continuous or discrete)?
Part B Constants Learning Goal Find C, Veavelope (x, t), and ycarrier(,t) To see how two traveling waves of nearly the same frequency can create beats and to interpret the Express your answer in term...
Part B Constants Learning Goal Find C, Veavelope (x, t), and ycarrier(,t) To see how two traveling waves of nearly the same frequency can create beats and to interpret the Express your answer in terms of A, ki, k2, x, t, wi, and w2. Separate the three parts of your response with commas. Recall that yenvelope (the second term) varies slowly whereas ycarrier (the third term) varies quickly. Both Venvelope and ycarrier Figure 1 of 1 should be trigonometric functions...
10. Answer the following questions: 10.1 What characteristic of the carrier wave is changed to represent...
10. Answer the following questions: 10.1 What characteristic of the carrier wave is changed to represent the data in ASK? a. amplitude b. frequency c. phase d. period 10.2 What kind of keying or modulation changes both the amplitude and phase of a carrier wave to represent data? a. FM 6. FSK c. PSK d. QAM 10.3 PSK is keying, not analog modulation. a. true b. false 11. Match. Data is the original information and signal is the information as...
can someone help me do this and maybe also the picture of the scope explain how you get it. thankyou! Frequency-sh...
can someone help me do this and maybe also the picture of the
scope explain how you get it. thankyou!
Frequency-shift keying (FSK) and Phase-shift keying (PSK) Two other modulation schemes are the phase-shift keying (PSK) and the frequency-shift keying (FSK). These are illustrated in Figure 8 b and c respectively. In phase-shift keying the carrier signal changes phase by a radians when the digital signal changes values. In frequency-shift keying a 0 is transmitted at a different carrier frequency...
An FM signal has an intelligence frequency of 5 KHz, a maximum deviation of 30 KHz, and a carrier frequency of 162.4 MHz. Use the Bessel Function chart to answer the following: a) Its bandwidth b) How...
An FM signal has an intelligence frequency of 5 KHz, a maximum deviation of 30 KHz, and a carrier frequency of 162.4 MHz. Use the Bessel Function chart to answer the following: a) Its bandwidth b) How many frequency components are there in the output spectrum? c) What is the frequency of the highest frequency component within its bandwidth?
2. Answer the following questions: a. What is the interest parity condition? Include the appropriate equation...
2. Answer the following questions: a. What is the interest parity condition? Include the appropriate equation and explain. b. Is “arbitrage” possible when the interest rate parity condition holds? Define “arbitrage” and explain. c. What do we mean by “exchange rate overshooting”? Why does it happen?
Im trying to sudy Bjt amplifiers-frequency response.. Could someone pls help explain my questions so i...
Im trying to sudy Bjt amplifiers-frequency response..
Could someone pls help explain my questions so i could better
understand this topic..
Pls explain through words or in essay..
Any helpful help would be appreciated
Pls answer all of my question so ur help would be
helpful..
when analyzing Frequency Response of BJ! amplifiers, (What is the primary benefit of common- emmitter amplifier, common-base & emitter-follower amplifier le configurations? pls explain... PI ec 151 RBI 3 RB REI 3RE2 Question 2...
7. A mode-locked Ti:Al203 laser with a cavity length of 1.5m and center wavelength of 790nm is used for optical frequency metrology. If the pulse duration is 20fs, and the laser has a hyperbolic secant square pulse profile a) Estimate the frequency bandwidth of the laser output.HINT: AtAf0.315 b) Estimate the number of modes in the laser output. c) If the pulse to pulse carrier envelope phase changes by 0.1rad, calculate the carrier offset frequency shift HINT: ΔωςΕ-ter d) What...
Problem 92. A) Why do pulses that enter an optical fiber at the same time but at different angles, exit the fiber at dif- ferent times? B) Would a pulse in an optical fiber spread if the wave speed was the same for all frequency components? Briefly justify your answer. Problem 93. Do some internet research and then answer the following questions. A) What are the carrier frequencies and bandwidths associated with the 802.11ac wireless internet (WiFi) standard? B) What...
For each of the following questions on optical spectra and spectroscopy, please provide answers no longer than 3 lines. (a) (2 marks) Describe how emission lines can be used as a diagnostic for gas temperature. (b) (2 marks) Describe how a continuum spectrum can be used as a temperature diagnostic (c) (2 marks) If a continuum spectrum peaks at 100 ?m wavelength, what is the approximate temperature of the source? An order of magnitude answer will suffice. (d) (2 marks)...
Part B Constants Learning Goal Find C, Veavelope (x, t), and ycarrier(,t) To see how two traveling waves of nearly the same frequency can create beats and to interpret the Express your answer in terms of A, ki, k2, x, t, wi, and w2. Separate the three parts of your response with commas. Recall that yenvelope (the second term) varies slowly whereas ycarrier (the third term) varies quickly. Both Venvelope and ycarrier Figure 1 of 1 should be trigonometric functions...
10. Answer the following questions: 10.1 What characteristic of the carrier wave is changed to represent the data in ASK? a. amplitude b. frequency c. phase d. period 10.2 What kind of keying or modulation changes both the amplitude and phase of a carrier wave to represent data? a. FM 6. FSK c. PSK d. QAM 10.3 PSK is keying, not analog modulation. a. true b. false 11. Match. Data is the original information and signal is the information as...
can someone help me do this and maybe also the picture of the
scope explain how you get it. thankyou!
Frequency-shift keying (FSK) and Phase-shift keying (PSK) Two other modulation schemes are the phase-shift keying (PSK) and the frequency-shift keying (FSK). These are illustrated in Figure 8 b and c respectively. In phase-shift keying the carrier signal changes phase by a radians when the digital signal changes values. In frequency-shift keying a 0 is transmitted at a different carrier frequency...
Im trying to sudy Bjt amplifiers-frequency response..
Could someone pls help explain my questions so i could better
understand this topic..
Pls explain through words or in essay..
Any helpful help would be appreciated
Pls answer all of my question so ur help would be
helpful..
when analyzing Frequency Response of BJ! amplifiers, (What is the primary benefit of common- emmitter amplifier, common-base & emitter-follower amplifier le configurations? pls explain... PI ec 151 RBI 3 RB REI 3RE2 Question 2...
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