?.SM:Matched-Clad Index MM:Graded Index

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• ?.SMMatched-Clad Index MMGraded Index

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• 1.????????
• 1.1???????---Corning Fiber
• 1.2???????---NTT,Fujikura,Furukawa
• 1.3??????????---ATT
• 1.4??????????---Philips(??)

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????(245 10µ m)
??(125 2µm )
??(810µm )
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1.????? (1).???? (2).????
2.?????? (1).????? (2).?????
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(a).???????
(b).???????
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(c).???????
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1.???(2 ) ???(1-????/????)100
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• 2.???(1.0µ m )
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clad
core
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• ?.???(?)????
• 1.?????????????
• 2.???????,??????????????
• 3.???????????
• 4. 0.4 dB/km???????

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3.1?????(PK 2500 S25)----???
3.2??????(OTDR0)--------??????
3.3????------------------------------??????
???????1???????0.4 dB
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1.???
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?????????(L)? LP1-P2(dB)
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• ???????OTDR

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• ?.???(?)????
• 1.???? MFD

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2.????CUT OFF
3.??Dispersion
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1.?????????
2.???,???
3.?????
4.???????????
5.????
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6.?????
7.??????????
8.???????????
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?.????? 1.????? 2.????? 3.?????
4.OTDR??????