ATIS Telecom Glossary
Monday, September 22, 2014

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optical path length
In a medium of constant refractive index, n, the product of the geometric distance and the refractive index. 2. In a medium of varying refractive index, the integral of ns, where s is an element of length along the path, and n is the local refractive index. Note: Optical path length is proportional to the phase shift that a lightwave undergoes along a path.

 

 

 

 

 

 

 

 

 

 



 
These definitions were prepared by ATIS Committee PRQC
 
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