Table 1: Manufacturer and characteristics of the fibers in the K-, H-, and J-bands. NA: numerical aperture, $\lambda _{\rm c}$: cut-off wavelength, $\oslash $: diameters, Conc.: core concentricity.
K-band Highwave NA = 0.16; $\lambda _{\rm c}$ = 1900 nm
  Silica Core $\oslash $ = 9.7 $\mu $m; Conc. < 5 $\mu $m
  Elliptical core Coating $\oslash $ = 245 $\mu $m
    Absolute length = 1.30 m $\pm$0.01 m
    Length difference after polishing: $\leq$$11~\mu$m
H-band Fujikura NA = 0.15; $\lambda_{\rm c}=1150$ nm
  Silica Mode $\oslash=5.5~\mu$m@1300 nm; Conc. 0.2 $\mu $m
  Panda core Coating $\oslash=245$ $\mu $m
    Absolute length = 1.30 m $\pm$0.01 m
    Length difference after polishing: $\leq$$12~\mu$m
J-band Fibercore NA = 0.14; $\lambda_{\rm c}=944$ nm
  Silica Mode $\oslash=6.3~\mu$m@1060 nm; Conc. 0.28 $\mu $m
  Bow tie core Coating $\oslash $ = 245 $\mu $m
    Absolute length = 1.30 m $\pm$0.01 m
    Length difference after polishing: $\leq$$20~\mu$m


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