[{"id":"om1","name":"OM1","kind":"multimode","coreUm":"62.5/125","jacket":"Orange","wavelengthsNm":"850 / 1300","reach1G":"275 m","reach10G":"33 m","reach40100G":"—","cost":1,"useFor":"Legacy only — leave it in the wall","year":1989,"blurb":"LED-era fat core. Modal dispersion kills 10G past 33 m. Don't install new."},{"id":"om2","name":"OM2","kind":"multimode","coreUm":"50/125","jacket":"Orange","wavelengthsNm":"850 / 1300","reach1G":"550 m","reach10G":"82 m","reach40100G":"—","cost":1,"useFor":"Legacy 1G backbones","year":1998,"blurb":"Slimmer 50 µm core. Better than OM1, still not a 10G+ cable."},{"id":"om3","name":"OM3","kind":"multimode","coreUm":"50/125 laser-optimised","jacket":"Aqua","wavelengthsNm":"850 VCSEL","reach1G":"1 km","reach10G":"300 m","reach40100G":"100 m (SR4)","cost":2,"useFor":"Default datacenter / campus MM","year":2003,"blurb":"The workhorse: cheap VCSEL optics, 300 m of 10G, 100 m of 100G."},{"id":"om4","name":"OM4","kind":"multimode","coreUm":"50/125 laser-optimised+","jacket":"Aqua / violet","wavelengthsNm":"850 VCSEL","reach1G":"1.1 km","reach10G":"550 m","reach40100G":"150 m (SR4)","cost":3,"useFor":"Longer MM runs, 40/100G rooms","year":2009,"blurb":"More modal bandwidth than OM3 — stretches 10G to 550 m."},{"id":"om5","name":"OM5","kind":"multimode","coreUm":"50/125 wideband","jacket":"Lime","wavelengthsNm":"850–953 (SWDM)","reach1G":"1 km","reach10G":"550 m","reach40100G":"150 m (2 fibres!)","cost":3,"useFor":"100G on a single pair via SWDM","year":2016,"blurb":"Wideband + SWDM4: 100G over just 2 fibres instead of 8."},{"id":"os2","name":"OS2","kind":"single-mode","coreUm":"9/125","jacket":"Yellow","wavelengthsNm":"1310 / 1550","reach1G":"10 km","reach10G":"10 km","reach40100G":"10 km (LR4)","cost":2,"useFor":"Campuses, between buildings, future-proof","year":2006,"blurb":"One mode, (almost) no dispersion. Kilometres on cheap LR optics — often cheaper than OM4 to install."}]