Related Experiment Video
Updated: Oct 12, 2025
08:44
Fabrication and Testing of Photonic Thermometers
Published on: October 24, 2018
6.0K
Study into the spread of heat from thermo-optic silicon photonic elements
Optics Express
|November 23, 2021
Summary
Thermo-optic phase modulators in silicon photonics generate heat, impacting device proximity. This study models and experiments to determine safe waveguide spacing, minimizing thermal crosstalk for compact photonic integrated circuits.
Area of Science:
- Photonics
- Materials Science
- Integrated Optics
Background:
- Thermo-optic phase modulators are crucial for low-speed silicon photonics applications like switching and tuning.
- Heat dissipation from these devices is a key challenge, limiting component density due to potential thermal crosstalk.
Purpose of the Study:
- To investigate the thermal crosstalk between adjacent waveguides in silicon photonics.
- To determine the minimum safe spacing between waveguides to prevent detrimental thermal interference.
Main Methods:
- Utilized both computational modeling and experimental validation.
- Studied various silicon-on-insulator (SOI) photonic platforms.
- Analyzed thermal crosstalk as a function of waveguide proximity.
Main Results:
- Quantified the thermal crosstalk effects between closely spaced waveguides.
- Identified critical distances for waveguide placement to mitigate thermal crosstalk.
- Demonstrated the impact of device spacing on integrated photonic circuit performance.
Conclusions:
- Understanding thermal crosstalk is essential for designing dense silicon photonic circuits.
- The findings provide practical guidelines for optimizing waveguide layout in thermo-optic devices.
- This research contributes to the development of more compact and efficient photonic integrated circuits.
Related Concept Videos
01:19Mechanism of heat transfer
1.5K
Understanding heat transfer mechanisms is essential for understanding how our bodies maintain balance in different environmental conditions. When the environment is thermoneutral, the body is in a state of balance, neither using nor releasing energy to maintain its core temperature. However, when the environment is not thermoneutral, the body employs four heat transfer mechanisms to maintain homeostasis: conduction, convection, evaporation, and radiation. These mechanisms facilitate heat...
1.5K
01:20Mechanisms of Heat Transfer II
3.6K
In convection, thermal energy is carried by the large-scale flow of matter. Ocean currents and large-scale atmospheric circulation, which result from the buoyancy of warm air and water, transfer hot air from the tropics toward the poles and cold air from the poles toward the tropics. The Earth’s rotation interacts with those flows, causing the observed eastward flow of air in the temperate zones. Convection dominates heat transfer by air, and the amount of available space for the airflow...
3.6K
01:14Mechanisms of Heat Transfer
706
Heat transfer between the human body and its environment occurs through four main mechanisms: conduction, convection, radiation, and evaporation.
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant...
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant...
706
01:14Mechanisms of Heat Transfer I
4.9K
Just as interesting as the effects of heat transfer on a system are the methods by which the heat transfer occur. Whenever there is a temperature difference, heat transfer occurs. It may occur rapidly, such as through a cooking pan, or slowly, such as through the walls of a picnic ice box. So many processes involve heat transfer that it is hard to imagine a situation where no heat transfer occurs. Yet, every heat transfer takes place by only three methods: conduction, convection, and radiation.
4.9K
01:21Joule-Thomson Effect
6.0K
The Joule-Thomson effect, also known as the Joule-Kelvin effect, describes the temperature change of a fluid when it is forced through a valve or porous plug while keeping it in a thermally insulated environment. This experiment is called a throttling process. This is an important effect widely used in refrigeration and the liquefaction of gases.
This experiment forces high-pressure gas through a throttle valve or a porous plug to a lower-pressure region. The gas expands as it passes through to...
This experiment forces high-pressure gas through a throttle valve or a porous plug to a lower-pressure region. The gas expands as it passes through to...
6.0K
02:46Quantifying Heat
57.5K
Thermal Energy Microscopically, thermal energy is the kinetic energy associated with the random motion of atoms and molecules. Temperature is a quantitative measure of “hot” or “cold”, which depends on the amount of thermal energy. When the atoms and molecules in an object are moving or vibrating quickly, they have a higher average kinetic energy (KE) (or higher thermal energy), and the object is perceived as “hot”, or it is described as being at a...
57.5K