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Fabrication of Silica Ultra High Quality Factor Microresonators
Published on: July 2, 2012
Coupled high Q-factor surface nanoscale axial photonics (SNAP) microresonators.
M Sumetsky1, K Abedin, D J DiGiovanni
1OFS Laboratories, Somerset, New Jersey 08873, USA. sumetski@ofsoptics.com
Optics Letters
|March 27, 2012
Summary
We developed novel coupled photonic microdevices using surface nanoscale axial photonics (SNAP) technology. These high Q-factor microresonators on optical fibers offer potential for dense integration of low-loss photonic devices.
Area of Science:
- Photonics
- Materials Science
- Nanotechnology
Background:
- Coupled microresonators are crucial for integrated photonic circuits.
- Achieving high Q-factors and dense integration on optical fibers remains a challenge.
Purpose of the Study:
- To experimentally demonstrate series of coupled Surface Nanoscale Axial Photonics (SNAP) microresonators.
- To explore the fabrication and characteristics of these novel microresonator structures.
Main Methods:
- Fabrication of SNAP microresonators via periodic nanoscale variation of optical fiber radius.
- Characterization of microresonator properties including Q-factor and axial Full Width at Half Maximum (FWHM).
Main Results:
- Demonstrated series of 2, 3, and 5 coupled SNAP microresonators with Q-factor > 10^7.
- Achieved microresonators with axial FWHM as small as 30 μm and fundamental mode FWHM of 10 μm.
- Fabricated microresonators with a 100 μm period on an 18 μm radius optical fiber.
Conclusions:
- SNAP microresonators offer a promising platform for dense integration of photonic devices.
- The demonstrated high Q-factors and small FWHM suggest potential for low-loss optical applications.
- This technology could advance integrated photonics on optical fiber platforms.
