Related Experiment Video
Updated: Aug 5, 2025

12:18
Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
17.1K
An Introduction to Nonlinear Integrated Photonics Devices: Nonlinear Effects and Materials.
Luigi Sirleto1, Giancarlo C Righini2
1National Research Council (CNR), Institute of Applied Sciences and Intelligent Systems (ISASI), Via Pietro Castellino 111, 80131 Napoli, Italy.
Micromachines
|March 29, 2023
Summary
Nonlinear integrated photonics combines optics and nonlinear phenomena for new devices. This field leverages advanced materials and guided structures for applications in communications and computing.
Area of Science:
- Photonics
- Optics
- Materials Science
Background:
- Nonlinear integrated photonics merges integrated optics with nonlinear photonics.
- This integration enables novel devices and applications by exploiting nonlinear optical effects.
Purpose of the Study:
- To introduce the fundamental physical processes in nonlinear photonics applications.
- To provide an overview of second-order, third-order, and ultrafast nonlinear phenomena.
- To discuss materials and guided-wave structures crucial for enhancing nonlinear properties.
Main Methods:
- Review of traditional and ultrafast nonlinear optical phenomena.
- Analysis of material properties, focusing on nonlinear coefficients.
- Discussion of guided-wave structures for nonlinear effects.
Main Results:
- Summary of common and innovative nonlinear materials.
- Identification of key physical processes driving nonlinear photonics.
- Highlighting the role of materials and structures in device performance.
Conclusions:
- Nonlinear integrated photonics is a rapidly growing field with significant potential.
- The development of suitable materials and guided structures is key to advancing applications.
- This work provides a foundational overview for researchers entering the field.
Related Concept Videos
Nonlinear Pharmacokinetics: Overview
484
Nonlinear or dose-dependent pharmacokinetics is a phenomenon that occurs when the pharmacokinetic parameters of certain drugs deviate from linear pharmacokinetics at higher doses. These drugs do not follow the expected first-order kinetics, where the rate of drug elimination is directly proportional to the drug concentration. Instead, they exhibit a nonlinear relationship, which can be attributed to several factors.
Nonlinearity can arise due to the saturation of plasma protein-binding or...
Nonlinearity can arise due to the saturation of plasma protein-binding or...
484
Nonlinear Pharmacokinetics: Bioavailability and Protein-Drug Binding
219
When a drug follows nonlinear pharmacokinetics, its bioavailability, the amount of the drug that reaches the systemic circulation, can change with different doses. This is due to the presence of a saturable pathway. The pathway becomes saturated as the drug concentration increases, decreasing the absorption rate. Consequently, the drug's bioavailability may be lower than expected at higher doses.
To quantify the extent of bioavailability, pharmacologists often use a parameter called .
To quantify the extent of bioavailability, pharmacologists often use a parameter called .
219
Nonlinear Pharmacokinetics: Causes of Nonlinearity
275
Nonlinearity in drug pharmacokinetics is caused by various factors influencing how a drug is absorbed, distributed, metabolized, and excreted. Understanding these nonlinear processes is crucial for predicting drug behavior in the body and optimizing drug dosing regimens.
Nonlinear drug absorption can occur when the process is rate-limited by solubility, carrier-mediated transport systems, or saturation of the presystemic gut wall or hepatic metabolism. For instance, high doses of riboflavin...
Nonlinear drug absorption can occur when the process is rate-limited by solubility, carrier-mediated transport systems, or saturation of the presystemic gut wall or hepatic metabolism. For instance, high doses of riboflavin...
275

