[問題] OC-192的問題

[kidd0308 (小艾)]

※ [本文轉錄自 comm_and_RF 看板]

作者: kidd0308 (小艾) 站內: comm_and_RF
標題: [問題] OC-192的問題
時間: Tue Jan  9 10:51:35 2007

an oc-192 system includes
1.A typical silica single-mode fiber.attenuation is 0.2 db/km at
  1550nm and dispersion coefficient is 15ps/nm*km
2.laser diode #1.wavelength is 1550nm,linewidth is 0.02nm,and
  output power is10mw
3.laser diode #2.wavelength is 1550nm,linewidth is 2nm,and
  output power is10mw
4.photodiode.sensitivity is -30dbm
5.erbium-doped fiber amplifier.input power range is -20 to dbm,
  saturated output power is 15dbm,signal gain is 20db

please answer the following questions

1.if there are no any optical amplifiers and laser diode #1 is used,
  estimate the maximum transmission distance
2..if there are no any optical amplifiers and laser diode #2 is used,
  estimate the maximum transmission distance
3.if there is an optical amplifier between transmitted and received
  ends and laser diode #1 is used,determine the location of this EDFA
  and estimate the maximum transmission distance



這題我不知道要怎麼算

有人可以幫我嗎

拜託大家

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※ 發信站: 批踢踢實業坊(ptt.cc) 
◆ From: 140.127.112.20
推 pow:拜託幫我解一下   差這一題作業就可以拿滿分了
推 kidd0308:樓上是高應大的嗎~~??