Optical device
First Claim
1. An optical device comprising a waveguide structure having a photonic band structure region, the photonic band structure region including a first region having a first refractive index and an array of sub-regions having a second refractive index, the array of sub-regions being arranged in a Fibonacci spiral pattern.
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Abstract
In the present invention, an optical device having a waveguide structure includes a photonic band structure region, the photonic band structure region comprising a first region having a first refractive index and an array of sub-regions having a second refractive index, the array of sub-regions being arranged in a Fibonacci spiral pattern. The present invention can also be applied to optical fibres.
The Fibonacci spiral pattern and can be found in nature in the arrangement of the seeds of a sunflower and in pine kernels. The Fibonacci pattern is an optimal packing system for the sub-regions surrounding a central cavity region.
31 Citations
32 Claims
- 1. An optical device comprising a waveguide structure having a photonic band structure region, the photonic band structure region including a first region having a first refractive index and an array of sub-regions having a second refractive index, the array of sub-regions being arranged in a Fibonacci spiral pattern.
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24. A method of processing an optical signal comprising the step of coupling an optical signal into an optical device comprising a waveguide structure having a photonic band structure region, the photonic band structure region including a first region having a first refractive index and an array of sub-regions having a second refractive index, the array of sub-regions being arranged in a Fibonacci spiral pattern.
- 25. A method of manufacturing an optical device, comprising the steps of forming a photonic band structure region in a waveguide structure, the photonic band structure region including a first region having a first refractive index and an array of sub-regions having a second refractive index, the array of sub-regions being arranged in a Fibonacci spiral pattern.
Specification