        The Add-Drop Filter
        -------------------

This project demonstrates a large-Q add-drop resonant filter.

* Open the project.
* Select the doubleresonator component

Here, we have a component that consists of two square resonators which are very
slightly separated. On either side of the resonators, there is a waveguide core
(i.e. one is a bus waveguide and the other is a receiver waveguide). At a 
particular wavelength, light inputted into the bus waveguide resonates the
resonators and light is coupled into the receiving waveguide.

* Click on the View Optical Field Icon.

In under a minute on an 800 MHz machine, a field plot will appear
showing light resonating in the resonators and being dropped into the receiving
waveguide. This efficiency is achieved in the use of the complete 1d overlap
method between sections. This method uses fully analytical integration and is
extremely quick!! Furthermore, a wavelength scan takes minutes!!!

* On the doubleresonator component, select Edit\Options.
* Change the wavelength to 1.525
* On the main panel of FIMMWAVE select the "FIMMPROP Scanner: wavelength scan"
  component.
* Select "Replicate CD1=>CD2" - the word REPLICA will appear in the text box
* Click the Edit button next to the text box that contains REPLICA.
* A replica of the device will appear. Select Edit\Options and change the
  wavelength to 1.54
* Now on the general scanner select Scan\start

After a couple of minutes, the power vs wavelength graph will appear showing
just how sharp the Q of the device is!!!

This device has been used to Validate results obtained from FIMMWAVE. For more
information about this device, please refer to the .pdf documents in the
ValidationDocs directory of your FIMMWAVE distribution.