Fiber Core and Clad Modeling with Mixed Mode in Zemax
This video demonstrates fiber structure modeling in Zemax, focusing on the core and cladding. The model is built using a mixed mode in Zemax Optical Studio.
Model Overview
In the lens data, a non-sequential component is inserted into a sequential editor to model the core and cladding of the fiber structure. The model is defined with three configurations:
- Configuration 1: Aperture data is 0.4
- Configuration 2: Aperture data is 0.41
- Configuration 3: Aperture data is 0.45
Numerical Aperture (NA) Analysis
Based on these configurations, we can define the Numerical Apertures (NAs) in relation to the fiber:
- First Row: NA of the laser is larger than the core or the fiber.
- Green: NA of the fiber equals the NA of the laser.
- Blue: NA of the laser is smaller than the NA of the fiber.
This analysis helps us understand how light propagates inside the three fibers.
Fiber Structure Definition
The fiber structure is divided into the cladding and the core:
- The outer layer is the cladding.
- The inner part is the core.
These components are defined with materials labeled as N of K3 and K5, which are predefined in the libraries. For K5, you can find the refractive index and other optical properties.
Conclusion
This is a general definition of the cladding and core in a fiber. Regardless of whether the NA is larger or smaller than the fiber NA, the propagation of the laser in the fiber can be modeled in three scenarios.
This video demonstrates fiber structure modeling in Zemax, including core and cladding. The model is built in a mixed mode of Zemax Optical Studio.
We can see from the lens data that a non-sequential component is inserted into a sequential editor here, modeling the core and cladding of the fiber structure.
The model has defined three configurations: 1. Configuration one, the aperture data is 0. 4. 2. Configuration two is 0. 41. 3. Configuration three is 0. 45. From these three configurations, we can define the NAs that are smaller, smaller, equal, or larger than the NA of the fiber. - The first row defines the NA of the laser as larger than the core or the fiber. - The green demonstrates the NA of the fiber equals the NA of the laser. - The blue defines the NA of the laser as smaller than the NA of the fiber.
From this definition and the three configurations, we can see how the light is propagating inside the three fibers. From the mechanical structure, the fiber can be divided into the cladding and the core. From this non-sequential insertion, we can see the outer is the cladding.
When we click here, the outer is highlighted as cladding, and the inner is the core, the center part of the core here. The cladding and the core are defined with the materials of N-K3 and K5, both predefined at the libraries here.
We can see from K5 that we can find the refractive index and segregate the number here. We can also find the optical properties here. This is the general define of the cladding and the core in a fiber.
So, the propagation of the laser in the fiber can be modeled in three scenarios, depending on whether the NA is bigger or smaller than the fiber NA.
