ʻO ke kaula hoʻokahi-ʻano: G652D vs G657A2

1/ He aha ka fiber mode-hoʻokahi?

+ ʻO ka fiber mode-hoʻokahi kahi fiber optical i hoʻolālā ʻia e lawe i hoʻokahi wale nō ʻano mālamalama - ke ʻano transverse.

+ ʻO ke anawaena o ka fiber optical mode hoʻokahi maʻamau he 8 a 10.5 μm (ʻo 9μm ka maʻamau) a me ke anawaena o ka cladding he 125 μm.

+ ʻO OS1 a me OS2 he fiber optical mode hoʻokahi maʻamau 9/125 μm. Hoʻohana ʻia nā mea ʻelua me nā nalu 1310 nm a me 1550 nm.

+ Ua hoʻolālā ʻia ka fiber ʻano hoʻokahi no ka hoʻoili ʻana i kahi mamao loa, me ka wikiwiki kiʻekiʻe, e kākoʻo pinepine ana i nā mamao mai 2 km a hiki i 100–160 km.

+ Ke ʻano o kahi fiber mode hoʻokahi maʻamau:

ʻO ke kumu:8–9 μm ke anawaena

Ka uhi ʻana:125 μm ke anawaena

Palekana:250 μm ke anawaena

ʻAʻahu komo:600 a i ʻole 900 μm ke anawaena

2/ G652D ʻAno Hoʻokahi ʻŌwili:

+ G652D ʻO ka Fiber Single-mode ka ʻano maʻamau o ka fiber optical single-mode maʻamau (SMF), i hoʻohālikelike ʻia e ka ITU-T no ke kamaʻilio wikiwiki a me ka mamao loa.

+ Loaʻa iā ia ka ʻenehana "low water peak", e hoʻemi ana i ka nalowale o ka hōʻailona ma ka pae nalu 1383 nm.

+ ʻIke ʻia no ka bandwidth kiʻekiʻe, ka attenuation haʻahaʻa, a me ka hoʻohālikelike hope, kūpono ia no nā pūnaewele kelepona, nā Metropolitan Area Networks (MAN), a me nā noi Fiber to the Home (FTTH).

3/ G657A2 ʻAno Hoʻokahi o ke kaula uila:

+ ʻO G.657A2 Single-mode Fiber kahi fiber kūlou-ʻike ʻole loa, hoʻokahi-mode fiber i kūlike me nā kūlana ITU-T, i hana ʻia e hana me ka liʻiliʻi o ka nalowale hōʻailona ma nā radii kūlou paʻa (e like me 7.5mm).

+ He kūpono loa ia me ka fiber G.652D, e kūpono ana no nā kaula hāʻule FTTH kiʻekiʻe-density, nā uwea o loko, a me nā hoʻonohonoho liʻiliʻi, radius kūlou kiʻekiʻe.

4/ ʻO ke ʻano hoʻokahi o ka fiber G652D vs G657A2: