Related Experiment Video
Updated: Feb 2, 2026
12:19
Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
Published on: April 4, 2017
8.9K
High-Q inverted silica microtoroid resonators monolithically integrated into a silicon photonics platform
Optics Express
|November 25, 2018
Summary
We developed new silica microtoroid resonators integrated with silicon nanowaveguides. This advancement enables seamless connectivity for silicon photonics devices, achieving high quality factors for improved performance.
Area of Science:
- Photonics and Materials Science
- Nanotechnology and Microfabrication
Background:
- Silica microtoroid resonators are crucial optical components.
- Integrating resonators with silicon nanowaveguides presents fabrication challenges.
Purpose of the Study:
- To report the monolithic integration of reflown silica microtoroid resonators with silicon nanowaveguides.
- To enable connectivity with other silicon photonics devices through novel toroid geometry.
Main Methods:
- Fabrication of silica microtoroid resonators on a silica film.
- Integration with silicon nanowaveguides using an inverted toroid geometry.
- Utilizing standard microfabrication and laser-induced heating for processing.
Main Results:
- Achieved intrinsic quality factors up to 2 million.
- Demonstrated monolithic integration of resonators and nanowaveguides.
- Identified pathways for achieving quality factors exceeding 10^8.
Conclusions:
- The developed microtoroid resonators are compatible with monolithic co-fabrication.
- The inverted toroid geometry facilitates integration with silicon photonics.
- Further process improvements can lead to significantly higher quality factors.
Related Concept Videos
01:20Inverting and Non-inverting OpAmps
1.8K
In an inverting amplifier, the input voltage is connected through a resistor to the inverting terminal. Meanwhile, the non-inverting terminal is grounded and a feedback resistor is established between the inverting and output terminal, as depicted in Figure 1.
1.8K
02:52Resonance
65.4K
The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N-O and N=O bonds.
65.4K
01:26Integration by Parts: Indefinite Integrals
173
Integration by parts is a fundamental technique in calculus for evaluating integrals involving the product of two functions. It is particularly useful when direct integration is not feasible. The method is based on the product rule for differentiation, which states that the derivative of a product equals the derivative of the first function times the second, plus the first function times the derivative of the second. By integrating this identity and rearranging terms, the integration by parts...
173
01:23Integration by Parts: Definite Integrals
80
Definite integrals involving the product of two functions over a fixed interval can be evaluated using integration by parts. This method rewrites the integral as the difference of a product evaluated at the endpoints and a remaining definite integral that is often simpler to compute.A representative example is the definite integral of the inverse tangent function. Since there is no direct integration formula for arctan x, the integrand is rewritten as a product of arctan x and the...
80
01:10Silica Gel Column Chromatography: Overview
3.6K
Silica gel column chromatography is a technique for separating compounds using a column packed with silica gel as the stationary phase. This method relies on differences in the polarity of compounds. Based on their polarities, compounds move between the stationary phase (silica gel) and the mobile phase (the solvent), forming discrete bands in the column.
Polar components tend to bind strongly to the silica gel, causing them to move slowly through the column. In contrast, nonpolar compounds...
Polar components tend to bind strongly to the silica gel, causing them to move slowly through the column. In contrast, nonpolar compounds...
3.6K
01:17Series Resonance
810
The RLC circuit impedance is defined as the ratio of the supply voltage to the circuit current. Resonance in such a circuit occurs when the imaginary part of this impedance equals zero. This specific condition means that the inductive reactance is exactly equal to the capacitive reactance. The frequency at which this happens is known as the resonant frequency. Mathematically, the resonant frequency is inversely proportional to the square root of the product of the inductance (L) and capacitance...
810