Backscattering in ring resonator

- January 30, 2023 at 5:16 am
  
  bublee-2016114988
  Subscriber
  
  Could someone tell me if the ring resonator in the structure group is bidirectional or unidirectional by default? Because I am supposed to see mode splitting in a single ring when I add NPs but I only see mode splitting when there are two parallel rings. If it is unidirectional, how do I make it bidirectional?
- January 30, 2023 at 8:20 pm
  
  Guilin Sun
  Ansys Employee
  
  bidirectional or unidirectional? the fields propagate omnidirectionally. the device does not have such concept, since it has uniform material.
  I am not sure what do you mean "two parallel rings". the NP has samll pertrubation to the mode. the mode spliting will depend on its interaction with the original device.

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