He aha ka ʻokoʻa ma waena o OM a me OS2 fiber optic cable?

He koʻikoʻi koʻikoʻi nā kaula fiber optic i ke kūkulu ʻana i nā ʻoihana kelepona, ʻelua mau ʻano o nā kaula fiber optic maʻamau i ka mākeke. Hoʻokahi-mode a ʻo kekahi he multi-mode fiber optic cable. ʻO ka mea maʻamau, ua kau mua ʻia ka multi-mode me "OM (Optical multi-mode fiber)" a ua kau mua ʻia ke ʻano hoʻokahi me "OS (Optical single-mode fiber)".

ʻEhā ʻano o ka multi-mode: OM1, OM2, OM3 a me OM4 a me Single-mode ʻelua ʻano o OS1 a me OS2 i nā kūlana ISO/IEC 11801. He aha ka ʻokoʻa ma waena o OM a me OS2 fiber optic uwea? Ma lalo nei, e hoʻolauna mākou i ka ʻokoʻa ma waena o ʻelua ʻano o nā kaula.

1. ʻO ka ʻokoʻa i ke anawaena kumua me nā ʻano fiber

He ʻokoʻa nui nā kaula ʻano OM a me OS i ke anawaena kumu. ʻO 50 µm a me 62.5 µm ka nui o ke anawaena fiber core, akā he 9 µm ke anawaena maʻamau maʻamau o OS2.

Nā Anawaena Fiber Core

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Nā ʻano fiber

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2. ʻO ka ʻokoʻa i ka attenuation

ʻOi aku ka kiʻekiʻe o ka attenuation o ke kelepona OM ma mua o ke kelepona OS, no ka nui o ke anawaena kumu. ʻO ka uwea OS he anawaena koʻikoʻi koʻikoʻi, no laila hiki i ka hōʻailona māmā ke hele i ka fiber me ka ʻike ʻole ʻia i nā manawa he nui a mālama i ka atenuation i ka liʻiliʻi. Akā ʻoi aku ka nui o ke anawaena fiber core o ke kaula OM, ʻo ia hoʻi, e nalowale ana ka mana māmā i ka wā o ka lawe ʻana i nā hōʻailona māmā.

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3. ʻO ka ʻokoʻa o ka mamao

ʻAʻole emi ka mamao o ka hoʻouna ʻana o ka fiber mode hoʻokahi ma mua o 5km, ka mea maʻamau i hoʻohana ʻia no ka laina kamaʻilio lōʻihi; ʻoiai hiki ke hiki i ka fiber multi-mode wale nō ma kahi o 2km, a he kūpono ia no ka kamaʻilio pōkole ma nā hale a i ʻole nā ​​pā kula.

ʻAno fiber

mamao

100BASE-FX

1000BASE-SX

1000BASE-LX

1000BASE-SR

40GBASE-SR4

100GBASE-SR10

ʻAno hoʻokahi

OS2

200M

5KM

5KM

10KM

ʻAno-nui

OM1

200M

275M

550m

OM2

200M

550M

OM3

200M

550M

300M

100M

100M

OM4

200M

550M

400M

150M

150M

 

4. ʻOkoʻa i ka nalu nalu & Māmā Puna

Hoʻohālikelike i ke kelepona OS, ʻoi aku ka maikaʻi o ke kelepona OM "ʻohi-mālamalama". Hiki i ka nui o ka fiber core ke hoʻohana i nā kumu kukui haʻahaʻa, e like me nā LED a me nā VCSEL e hana ana ma 850nm a me 1300 nm mau nalu. ʻOiai ʻo ke kelepona ʻo OS e hana nui ana ma 1310 a i ʻole 1550 nm mau hawewe e koi ai i nā kumu laser ʻoi aku ka maikaʻi.

5. ʻOkoʻa i ka bandwidth

Kākoʻo ʻo OS cable i nā kumu kukui māmā a ʻoi aku ka mana me ka attenuation haʻahaʻa haʻahaʻa, hāʻawi i ka bandwidth theoretically palena ʻole. ʻOiai ke hilinaʻi nei ke kaula OM i ka hoʻouna ʻana i nā ʻano māmā he nui me ka liʻiliʻi o ka mālamalama a me ka attenuation kiʻekiʻe e hāʻawi i ka palena o ka bandwidth.

6. ʻOkoʻa i loko o ka uhi waihoʻoluʻu uwea

E nānā i ka wehewehe maʻamau ʻo TIA-598C, ua uhi ʻia ka uwea singl-mode OS me ka ʻaʻahu waho melemele, ʻoiai ua uhi ʻia ke kaula multi-mode me ka waihoʻoluʻu aqua.

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Ka manawa hoʻouna: Jan-30-2023
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