作者kidd0308 (小艾)
站内comm_and_RF
标题[问题] OC-192的问题
时间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
这题我不知道要怎麽算
有人可以帮我吗
拜托大家
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 140.127.112.20
※ kidd0308:转录至看板 Electronics 01/09 10:58
1F：推 hammer7268:版上好像很少讨论光通讯的东西~ 163.18.53.160 01/12 23:00
2F：→ hammer7268:让我也很苦恼..不知哪里可以问.. 163.18.53.160 01/12 23:01