Experimental Demonstration of Single Mode- Splitting in Microring With Bragg Gratings

We demonstrate single mode-splitting in two types of microring resonators with Bragg gratings. In the first device type, gratings are periodically embedded to the inner wall of the microring resonator. By adjusting the reflection coefficient of the grating and the self-coupling coefficient between t...

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Bibliographic Details
Published in:IEEE photonics technology letters 2015-07, Vol.27 (13), p.1402-1405
Main Authors: Huang, Qiangsheng, Ma, Keqi, He, Sailing
Format: Article
Language:English
Subjects:
Bragg gratings
Devices
Extinction ratio
Gratings
Optical mode splitting
optical resonators
Optical ring resonators
Phase shift
Reflection coefficient
Resonators
Sensors
silicon Photonics
Spectra
Splitting
Walls
Wavelength measurement
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Summary:We demonstrate single mode-splitting in two types of microring resonators with Bragg gratings. In the first device type, gratings are periodically embedded to the inner wall of the microring resonator. By adjusting the reflection coefficient of the grating and the self-coupling coefficient between the waveguide and microring, experimental results show that the distance between the splitting dips can vary from 0 to more than 1 nm. In the second device type, Bragg gratings break into two identical parts with a π phase shift between them. The center peak in the mode-splitting spectrum has a full-width at half-maximum of 0.1 nm. The spectra can also be a Fano-type transmission, when the phase shift deviates from π.
ISSN:1041-1135
1941-0174
1941-0174
DOI:10.1109/LPT.2015.2422731