18 ʧ

 Ҥҹ͹ ӹѡҹ Ҥصˡҧ ǹͧѭҳ§к ѭҳͧ
Ѩغѹѭҳкҡ к§ кҧСͺк к кѾ кԡͧѷԡҧ ѡɳ֧ ֧ѧҤҧкѭҳǹʧ
ҡԨó ֧ ѨغѹҤͧʧԹҤҤ§Ѻô ᤵ 5 ѹʧԷҾ٧ҡͧѺҹ͹ҡ
ᤵ 5 ͧѺѭҳ 100 ԵԹҷ ӡѴͧ§ 100 ʧͧѺѭҳõ ѧѺ֧ 2000 Ѳͧҧ ͧʧ֧شѹҧҧҧ

شͧʧ

 شͧʧС شºͧͧᴧ شѲҧͧ Сͺ

öѺ

 ʧ Ҵٹҧѹҡ 62.5/125 ʧҴҤ Ѻʧ 850 ѭҳҡ 160 õ 1 1300 ѭҳ 500 1 Ŵ 100 Ѻѭҳҡ 1 ԡõ ѧ֧ 5 Ѻѭҳ 100 õ

ѧ٭

 ʧسѵԧʧҹ ͹ʧ͹ҧ ҵҹͧʧ ѭҳʧ֧ 2000 ҡҧԹ 2000 ͧյء 2000 ٭ͧѭҳ֧ͧҡ ͧ˹ҧ§ 100
ҡԨó ͺʹͧҧѧ٭ Ǵͧѭҳ سѵͧͧ¹ŧҧѹ ͧѭҳͧ٧ ѵ٭ҡóͧʧѭҳŵѺʧ ¹ѭҳѺ֧šѺѧ٭ҧʧ

öúǹ

 ѭӤѭͧѭͧ˹ ѭҡ ͧúǹҧ¡Ҥʷ ҧ з͹Ѻ úǹҡѨ͡¡ EMI ѭҧͧ
Ѻʧѭͧ ʧѧҹѧҹ١úǹͧʧҡ͡

˹ѡ

 ʧ˹ѡǴͧ˹ѡͧʧҴ 2 ᡹˹ѡ§ҳ 20 ֧ 50 繵ͧᤵ 5

Ҵ 

 ʧҴҧҤѴҧǴͧҡ ҴͧʧʴҴ Ҵͧҳ 15 繵ͧǴٷᤵ 5 

ʹͧ٧

 ʧѡɳʧԹҧ ֧ҡѴѧ

ʹԵѾԹ

 ǹ ֧ Ѵǧ Դѹҡ֧Դ

ԴҧС

 ʧç˭ Ẻ⺹ ෤ǡѺʧѧԴҡѡ ԴԴҧСǡѺسѵءҹ

ѡ

 Դ "ᵡѧ" Դ֧Դ鹡Ѻ ʴ ԧçҹ٧ҡ ͡ çᷡ ͡ҡç֧ѧҹ٧ٷ ҡººǡѺ ˹ͧسѵҧ ֧ ѡѡɳسѵҧ٧¹ŧ¡

ʧҤ

 ҧҹҤ¹ŧҤͧʧŴŧ ѧٷҧ ҡѡ͡ҡѧ Դʧҡ ͧӹҭ Դԧ Դҡѡͧҡͧҡ ͧö¡ҡ աҤͧ١ŧѺԴ

ʧѧöѺͧ

 Ѩغѹǹ˭͡ѺŹ 10 Ե ͡ѺŹҵҹ ѨغѹҡԹ 100 Ե ͧѺ 155 Ե ͧҹкҧͧҧ٧ҡ ͧŵʴҾԴ ʧ͡ ѲͧѲҡ 155 Ե ͧʧͧѺ ʧѧöѺԴ͹ù ѭҳСͺ

ʧ

 سѵͧʧ¡ѡɳسѵͧʧѡɳʧͧѡɳҧ سѵͧШʧ͡ óз͹ͧʧѺͧԴ ѧҹҧͧѪѡͧʧʧз͹Ѻ Ŵ٭ͧѧҹʧ Ը¡ͧ͡ԧ ŵ

ԧ

ʧպʧç Шʧ͡ҧҹҧش ԧ֧ʧѧ٭ҧʧش ѺѺҧ ԹʧѺҧҡ Թҧҧ ҧͧ ѡԧ

ٻ 1 ʧԧ
ŵ
ʧѡɳШʧ͡ҹҧ ѧ֧ͧҧѪѡͧʧѺػóҺʡѺ紴ԧз͹Ѻ ҡѪѡͧʧѡɳʧ¡ôԹ ҡʧз͹Ѻسѵͧʧ¡Ẻ Թ硫
ʧ ǹ˭Ẻŵ Ҵ 62.5/125 ֧ٹҧͧ 62.5 ͧ紴ԧ 125
سѵͧѹʧẺԹ硫٭٧ôԹ硫


ٻ 2 ʧẺŵ
ʧѺʧ
ʧͧػó˹Ѻѭҳʧػó˹ѭҳʧԴʧ LED ʹ ػóʧ˹¹ʧ ǹػóѺʧ¹Ѻѭҳ ʹ
ػóʧ LED ѧҹ§ 45 ѵ ѺѺʧẺ 62.5/125 Ԩóػóͧʧ ʧҹҳ 830 ֧ 850 ҧҳ 25-40 ѧ˹ԧԡѴͧʧ֧֧ʧҹ 850
ѺʧʹػóѺѭҳʧʧ ʧŵѭҳ
ػóѺʧѡ ҡѺѭҳç дǡҹ

ٻ 3 çҧͧʧ

͡Ѻʧ ʧҹѧա͹ѹ
ѡɳѭҳʧ͡ ͧѧ٭ش ѧ֧ԸҺºѭҳʧ
ѧ͹֧ͧ ԸԸ Һ (Flat) Ẻ PC Ẻ APC ʴѧٻ 4

ٻ4 ͹

áŴ͹ѭҳҧѹ ѧͧʧз͹Ѻش ѡɳ֧ͧѹͧʧ֧ѹ ѧ٭ʧش Һѧ٭٧ ҳ -30 dB Ẻ PC ٭ҳ -40dB Ẻ APC ٭ش -50 dB
ѡɳ֧ͧѹʴѧٻ 5

ٻ 5 ѹҧ
ءʧ
ҹʧٻѴ ѲͧѺѺʧ ͧѺѭҳ ʧͧ٧ ҡúǹ աѧöѺ෤ҡͧѺԴ͹Ҥ


ٻ 6 ʧẺ ST

ҧҹٻҧͧءҤӹѡҹ öԹѭҳʧҵҹҡ Һ §ҧ ǹҺҡ
ٻԹСͺçҧѧٻ 7


ٻ 7 çԹѭҳҵҹ EIA 568


ҡѡɳͧԹҵҹ EIA 586 öѺ෤ҧ ҡ
෤ 10BASE F
Ẻ 10BASE F ҵҹ͡ç ѭҳѧ 10 Ե ҡ 10BASE F 10 Ե ѲкẺԡԵ ѭҳ 1,000 Ե Թʧѡɳ͹Ѻ ԻШ쵵ҧ ѧʴٻ 8


ٻ 8 çҧԹѭҳѺʧ
FDDI
ҹ ͧѭҳ 100 Ե ѭҳʧ çҧǧǹͧШ͡ Թѭҳҵҹ EIA 568 ѴҡѺ FDDI FDDI ö§ ӹǹ˹ FDDI ֧ 1,000 ˹ Ѵçҧҧ ͧ FDDI öҹҧ᾵ٻ FDDI ͧ ٻǧǹѡͧ FDDI ͧǧǹͧ ͧʧӹǹ 4 ʧ FDDI  ѧѡѧ ͡Ѻ Ѻԧ ͧ FDDI ʴѧٻ 9


ٻ 9 §ͧ FDDI

ATM

ѲͧѺҹ٧ҡ öѺ 155 Ե 622 Ե ٧ԹҡԡԵ͹Ҥ çҧԹѡɳ çҧШѭҳçѺҾʧ
ѡɳͧШѭҳѺʧѡɳѺ¹ҡѺ෤ҧ ʴٻ 10 ҧçҧͧѭҳ֧ҧѺ


ٻ 10 ҧçҧҡѺػóҧ
ǹʧ (fiber optic)

ʧͻԡ ҧͧѭҳʧԴ˹ ҡط٧ҡ ʧѡɳҴ Ҵҳͧ ʧͧöѭҳʧҡش˹ѧաش˹ ٭ͧѭҳʧҡ

ǹʧö觵ö㹡ùʧ͡ 2 Դ ǹʧԴ (Singlemode Optical Fibers, SM) ЪԴ (Multimode Optical Fibers, MM)

ѨغѹѲʧ ҡʵԡҹҧҧӹ֧֧٭ѭҳҡѡ ҧ

ʧöԹҧҹǹʧҧ

çҧͧʧǹҧҡҹʧ ʧʧ١з͹ѺѺҧͧҧ (core) ǹ (cladding) ҡҧ˹ѧաҧ˹ͧʧ

˵ͧ cladding ǹͧ core ͧҡ ҡ core Ѻҡç Ҩ͹ҡ ҺѹѺ core з͹Ѻͧʧ core ˵٭ѭҳʧ ѧ֧ͧ cladding ͧѹ˵óѧ ͡ҡ Ѵҡ cladding ͡ǹա˹ çʧ˹ѡ

ʧԹҧҡҧ˹ѧաҧ˹ Դҡóͧз͹ (reflection) ѡ (refraction) ͧʧҧҧͧ ѺóҧʧѪѡաҧ˹ ( n2>n1 ; n1 êѡͧʧҧʧѡ n2 êѡͧҧʧ) Դҡó¡ з͹Ѻͧʧ (Total Internal Reflection) ҡóѧö͸Ժ֧ٻԹҧͧʧҧʧ

êѡͧҧ˹ ѵǹҧͧʧҡȡѺͧʧҧ êѡͧҳ 1.3 ʧ͹ҡ

͹Ҥͧʧ

֧Ѩغѹҹҧª ҡѲͧͧҴ˭¡ҫ ͧѺӹǹҡءٻẺŵ·ѧԴͧҾͧѲͧѺѺӹǹҳҡ 
֧ ʧѭҳؤ ҷ٧ ֧Ҥҹ͹ ӹѡҹ çҹ ʧԹШѹ͹ѺѧóԴաѡ