Intuitive explanation for slot waveguides? |
| Intuitive explanation for slot waveguides? Posted: 01 Dec 2021 09:02 AM PST Can someone help me with an intuitive explanation for optical slot waveguides, where the optical field is confined in a low index cladding slot between two higher index sections? Basically I am having trouble conceptualizing the math directly into physical intuition - a strip waveguide makes sense since it's just continual refraction of light. Is it a property of the slot waveguide that it must be sub-wavelength or near-wavelength? For example, obviously two macroscopic strip waveguides near each other do not confine the light inbetween them, and instead within themselves. Or perhaps this is more a property of the dimension of the high index material itself? A resource would be useful - I read this link but section 2.2 wasn't super clear to me in terms of intuition https://www.intechopen.com/chapters/60221 Any help is appreciated! [link] [comments] |
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