| Microdisk Resonant Devices | |||
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See a collection of SEM photos of smooth and vertical disk and ring mesas defined with the newly developed CH4 -based RIE dry etching process. |
A microdisk resonant cavity
supports whispering gallery modes, which propagate by means of total
internal reflection from the disk/air interface.
When coupled to bus waveguides, a microdisk cavity is
capable of completely extracting the resonant wavelength from the input port and rerouting it to the output, drop port. Thus numerous applications could be utilized and the microdisk device is viewed as building block for the future photonic circuits. |
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The vertically coupled microdisk resonators are processed by a thermal wafer -to-wafer bonding. Follow the link to find out more how the devices are made. |
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The microdisk devices are versatile elements for the photonic circuits. This presentation (best viewed with IE 4 or latter) contains more information on this subject. A PDF version is also available. |
To understand the tradeoffs governing the behavior of this complex device extensive numerical simulations are undertaken. The above movie is an example of a 3D Finite Element simulation. |
This page contains a list of publications related to the project. |
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The
first order mode has the smallest volume and occupies the outmost region of
the disk in the radial direction. The
resonant condition is achieved when the roundtrip phase is equal to
integer number times 2p: 2pR*beff=p*2p. The following picture shows a
cross-sectional view of a microdisk cavity and the field distribution of
the first TE mode as calculated by a full-vectorial mode solver.
