He aha ka G.654E fiber?

I nā makahiki i hala iho nei, ua hoʻohana ʻia kahi ʻano hou o ka fiber optical G.654E i kekahi mau laina pahu lōʻihi a ua loaʻa nā hopena maikaʻi. No laila he aha ka G.654E fiber optical? E pani anei ka pulupulu G.654E i ka pulupulu G.652D?

Ma ka waena o 1980s, no ka hoʻokō ʻana i nā koi kamaʻilio lōʻihi o nā uwea optical submarine, ua hoʻomohala ʻia kahi silica core single-mode fiber optical me ka nalu o 1550 nm. ʻO kona attenuation kokoke i kēia nalu nalu he 10% emi ma mua o koʻO ka fiber OpticalKe hele mai nei ʻo G.652.

Ua wehewehe ʻia kēia ʻano fiber e like me G.654 fiber, a ʻo kona inoa i kēlā manawa ʻo "1550 nm wavelength liʻiliʻi attenuation single-mode fiber."

I ka makahiki 1990, ua hoʻomaka ka ʻenehana WDM e hoʻohana i nā ʻōnaehana kamaʻilio optical i lalo o ka wai. Hiki i ka ʻenehana WDM ke hoʻoili like ʻia o nā kakini a i ʻole nā ​​haneli o nā kaila optical i loko o kahi fiber optic, a me ka hoʻohana ʻana i nā amplifiers fiber optic, hoʻohui ʻia nā hōʻailona optical multi-wavelong kiʻekiʻe i kahi fiber optical a hui pū ʻia . hōʻike i nā hiʻohiʻona laina ʻole.

Ma muli o ka hopena nonlinear o ka fiber optical, i ka wā i ʻoi aku ai ka mana optical e komo ana i ka fiber ma mua o kekahi waiwai, e emi mālie ka hoʻoili ʻana o ka ʻōnaehana me ka piʻi ʻana o ka mana optical e komo i ka fiber.
ʻO ka hopena nonlinear o ka fiber optical e pili ana i ka mana optical o ka fiber core I ka manawa e hoʻomau ai ka mana optical input, ma ka hoʻonui ʻana i ka wahi kūpono o ka fiber optical a me ka hoʻemi ʻana i ka mana optical o ka fiber core ka fiber. hiki ke ho'emi 'ia ka mana o ka hopena nonlinear i ka hana ho'ouna. No laila, ua hoʻomaka ʻo G.654 fiber optical e hoʻomāhuahua i ka wahi kūpono.

ʻO ka hoʻonui ʻana i ka ʻāpana kūpono o ka fiber e alakaʻi i ka hoʻonui ʻana i ka lōʻihi o ka nalu ʻokiʻoki, akā pono e mālama ʻia ka piʻi ʻana o ka lōʻihi o ka hawewe cutoff i ʻole e hoʻopilikia i ka hoʻohana ʻana o ka fiber i ka hui C (1530nm ~ 1565nm) , No laila, ua hoʻonohonoho ʻia ka lōʻihi hawewe cutoff o G.654 fiber i 1530nm.

I ka makahiki 2000, i ka wā i hoʻoponopono hou ai ka ITU i ka G.654 optical fiber standard, ua hoʻololi ia i ka inoa i "cutoff wavelength-shifted single-mode optical fiber."

A hiki i kēia manawa, ʻelua mau hiʻohiʻona o ka fiber optical G.654 o ka attenuation haʻahaʻa a me kahi wahi kūpono nui. Ma hope o kēlā, ʻo ka G.654 optical fiber i hoʻohana ʻia no ke kamaʻilio kelepona submarine i hoʻopaʻa nui ʻia a puni ka attenuation a me ka wahi kūpono, a hoʻomohala mālie i ʻehā mau ʻāpana o A / B / C / D.