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Characteristics of Series Resonant Circuit

Characteristics of Series Resonant Circuit

Series resonance occurs in a circuit containing inductive (L), capacitive (C), and resistive (R) elements connected sequentially. At the resonance frequency, the inductive and capacitive reactances are equal in magnitude but opposite in sign, effectively canceling each other. This causes the circuit's impedance is minimal, primarily determined by the resistance R. The resonant frequency of an RLC circuit is defined as:

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Characterizing microring resonators using optical frequency domain reflectometry.

Xiaopei Zhang, Yuexin Yin, Xiaojie Yin

|May 14, 2021

Summary

This summary is machine-generated.

This study introduces a new method using optical frequency domain reflectometry (OFDR) to measure optical microring resonator loss. The technique accurately determines resonator quality factors by analyzing backscattered light signals.

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Area of Science:

Photonics
Optical Engineering
Materials Science

Background:

Optical microring resonators are crucial components in integrated photonics.
Accurate characterization of loss is essential for device performance optimization.
Traditional transmission methods can be limited in spatial resolution.

Purpose of the Study:

To develop and demonstrate a novel method for extracting optical microring resonator loss characteristics.
To utilize optical frequency domain reflectometry (OFDR) for resonator analysis.
To accurately determine loaded and intrinsic Q-factors of microring resonators.

Main Methods:

Employing optical frequency domain reflectometry (OFDR) to obtain spatial-resolved backscattering signals.
Analyzing the increased optical path length of resonance modes due to circulation within the resonator.
Developing a calculation model to derive intrinsic Q-factors from loaded Q-factor measurements.

Main Results:

Demonstrated a novel method for measuring optical microring resonator loss.
OFDR successfully visualized resonance mode circulation and path length increase.
Accurate determination of loaded Q-factors for multiple resonators was achieved.
A model was proposed to calculate intrinsic Q-factors from OFDR data.

Conclusions:

The proposed OFDR-based method offers a viable alternative for characterizing optical microring resonator loss.
This technique provides detailed spatial information not available with traditional methods.
The developed calculation model enables accurate extraction of intrinsic resonator quality factors.