Wide-range tuning of polymer microring resonators by the photobleaching of CLD-1 chromophores.
We present a simple and effective method for the postfabrication trimming of optical microresonators. We photobleach CLD-1 chromophores to tune the resonance wavelengths of polymer microring resonator optical notch filters. A maximum wavelength shift of -8.73 nm is observed. The resonators are fabricated with a soft-lithography molding technique and have an intrinsic Q value of 2.6 x 10(4) and a finesse of 9.3. The maximum extinction ratio of the resonator filters is -34 dB, indicating that the critical coupling condition has been satisfied.
Poon
Joyce K S
JK
Department of Electrical Engineering and Department of Applied Physics, California Institute of Technology, MC 136-93, Pasadena, California 91125, USA. poon@caltech.edu
Huang
Yanyi
Y
Paloczi
George T
GT
Yariv
Amnon
A
Zhang
Cheng
C
Dalton
Larry R
LR