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Optics & Infrared Sensing

Optics & Infrared Sensing

Waveguide Modeling

Figure 1  1x 3 multimode interference splitter in chalcogenide glass
Figure 1 1x 3 multimode interference splitter in chalcogenide glass.

The propagation of optical fields through complex dielectric structures can be accurately modeled using the finite-difference beam propagation method (BPM). The BPM is generally very efficient and readily includes effects such as guided and radiation modes, mode coupling and mode conversion. In addition to calculating waveguide modes, BPM also models effects due to optical non-linearities and polarization.

The BPM is used to model optical fibers, photonic components, and optical circuits. It is a necessary first step for the development of novel photonics devices, allowing the determination of the specific geometric and material parameters needed to achieve the desired performance.

Optics & Infrared Sensing

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