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How does the data flow in a time-domain simulation in INTERCONNECT?
For which of the following circuits is it appropriate to use Transient Sample Mode for time-domain simulations? (Select all that applies).
In the time-domain, the response of an element to an input signal can be calculated through the time-convolution of the input signal with the element’s impulse response. In Transient Sample Mode, the signal through an element is calculated sample by sample, and the convolution becomes a discrete convolution as shown below. What role does a digital filter play in the discrete convolution?
Which of the following approaches is used to calculate output signals in Transient Block Mode simulations?
Which of the following statements apply to Transient Block Mode simulations? (Select all that apply)
Which of the following are true?
To use an ONA for a time domain simulation of a circuit, the “analysis type” should be set to:
The image below shows three independent circuits connected to Optical Oscilloscope (OOSC) elements. Which of the following corresponds to the matching optical power signals measured by the OOSC_1, OOSC_2, and OOSC_3, respectively?
If the bit rate is 2.5e10 bits/s, the number of samples is 2400, and the sample rate is 1.6e12 Hz, what is the time window? Please answer in units of nanosecond with 1 decimal precision.
(For example, if the answer is 50.64 ns, then type 50.6.)
If the sample rate is 1.6e12 Hz, what is the simulation time step? Please answer in units of picoseconds with 3 decimal precision.
(For example, if the answer is 2.341 ps, then type 2.34.)
Which of the following settings is NOT recommended when you want a waveguide element to accurately model the group delay?
Which of the following statements is true?
In which case should we set the “number of taps estimation” to fit tolerance for an s-parameter element?
Which of the following statements is true?
If there are 4 elements inside the ring of a ring resonator, two of which are waveguides, then what should be the best choice for the “delay compensation” properties of the two waveguides in a Transient Sample Mode simulation?
(Hint: Which options give the correct total delay compensation and allow for the lowest possible sample rate? )
How do you calculate the time delay of a waveguide?
A circuit is set up for a Transient Sample Mode time domain simulation. It includes one waveguide, which has the “number of tap estimation” set to group delay and "delay compensation" set to 4. The waveguide has "effective index 1" = 2, "group index 1" = 2.5, and "length" = 20e-6. What is the minimum sample rate of the simulation, if we are interested in the TE mode? (Assume only the waveguide contributes to the group delay). Please provide your answer in units of THz, with 1 decimal precision.
(For example, if the sample rate is 1.23 THz, then type 1.2.)
In the demo shown in the video, which of the following settings are necessary to assure an accurate free-spectral range?
(Select all that applies).
What is the free spectral range of a ring resonator with a group index of 4 and a radius of 5 microns?
(Insert your answer in units of TeraHertz [THz] with one decimal place precision. For example, if the answer is 1.236 THz, type in 1.24).
Which of the following statements is true for a Transient Block Mode simulation?
(Check all that apply).
If the sample rate is 10 THz and the time window is 5 ns, what is the number of samples?
Please answer the integer value.
Consider an Optical N Port S-parameter element that captures the response of a grating coupler in a time domain Transient Sample Mode simulation. The transmission amplitude is of critical importance, and the digital filter "number of taps estimation" is set to fit tolerance. What methods can be used to improve the accuracy of the simulated transmission amplitude? Assume all sources in the simulation have the same sample rate.
What is the recommended setting for a waveguide that will be used in both frequency and time domain (Sample Mode) simulations?
A circuit is set up for a Transient Sample Mode time domain simulation. It includes two waveguides, which each have the “number of tap estimation” set to group delay and "delay compensation" set to 2. Waveguide 1 has "effective index 1" = 2, "group index 1" = 3, and "length" = 50e-6. Waveguide 2 has "effective index 1" = 2.5, "group index 1" = 4, and "length" = 20e-6.
What is the minimum sample rate of the simulation, if we are interested in the TE mode? (Assume only the waveguides contribute to the group delay).
Please provide your answer in units of THz, with 1 decimal precision. (For example, if the sample rate is 1.23 THz, then type 1.2).
Download the ring_resonator_time_domain.icp file. The ONA is set up to run the simulation in Transient Sample Mode. Set up the “delay compensation” property of the waveguides. Run the simulation to extract the FSR of the ring near a frequency of 193.2 THz. Hint: Look at the free spectral range result for the drop port (input 2).
Write the value in units of TeraHertz (THz) with two decimal place precision. (For example, if the answer is 1.233 THz, type in 1.23).