olemus
optilise kiu liik: südamiku läbimõõt erineb läbiva kiire lainepikkusest vähe ja kius saab levida ainult üks võnkemood
= type of optical fiber: the diameter of the core differs little from the wavelength of the transmitted beam, and only a single mode of light can propagate in the fiber

ülevaateid
http://www.ad-net.com.tw/wp-content/uploads/2006/06/single-mode-vs-multimode-FIBERS.jpg

https://qph.fs.quoracdn.net/main-qimg-2d585882f8f2d71a2e58b72e90473f14

https://en.wikipedia.org/wiki/Single-mode_optical_fiber

https://community.fs.com/blog/single-mode-cabling-cost-vs-multimode-cabling-cost.html

näiteid
https://medium.com/@fiberstoreorenda/overview-of-single-mode-fiber-types-7af03359527c

https://duckduckgo.com/?t=h_&q=%22single+mode+fiber%22&iax=images&ia=images

vt ka
- multimoodkiud