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Wavelength-Tunable Microring Resonator on Lithium Niobate

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2 Author(s)
Tzyy-Jiann Wang ; Nat. Taipei Univ. of Technol., Taipei ; Chia-Hong Chu

A wavelength-tunable microring resonator with integrated microheater on lithium niobate is presented. Ridge structure on lithium niobate is formed by a wet-etching technique for enhancing the lateral index contrast of the waveguide. The resonant wavelength of the microring resonator is tuned through thermooptic effect by injecting current into the integrated microheater. The tuning characteristics of through port and drop port are measured and the tuning rates in the microring resonator with a radius of 100 mum for transverse-magnetic and transverse-electric polarizations are 2.54 x 10-2 nm/mA and 3.40 x 10-3 nm/mA.

Published in:

IEEE Photonics Technology Letters  (Volume:19 ,  Issue: 23 )