11光電器件培訓(xùn)教程-資料下載頁(yè)
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【正文】 EX=10Log P1/P0 EX: Extinction Ratio Unit: dB P1 : is the output power when the signal is “1” Unit: mW P0 : is the output power when the signal is “0” Unit: mW 聯(lián)系人：孫宇 13714800771 聯(lián)系人：孫宇 13714800771 ? Transmitter output eye 聯(lián)系人：孫宇 13714800771 聯(lián)系人：孫宇 13714800771 ? Receiver ? Receiver Sensitivity Sensitivity expressed as a ratio of errored bits to correct bits (BER) BER is a function on signal to noise ratio (SNR) SONET required a BER of 1010 GbE / FC require a BER of 1012 聯(lián)系人：孫宇 13714800771 ? Saturation Power To prevent errored bit on the output when no signal is present . If the power inputted into PhotoDiode is very big , the signal “1” is detected when the signal is “0” in fact . 1 0 0 or 1 聯(lián)系人：孫宇 13714800771 ? Input Signal Detection To prevent chatter on the output when no signal is present. Threshold level set by external resistors (defined on respective datasheets). Resistors set a reference voltage, which is pared to staged output of limiting amplifier. to 3dB hysteresis present to ensure that data is jammed before BER is violated . 聯(lián)系人：孫宇 13714800771 . Input power 43dBm 40dBm Status ? Jam Buffer Input set by a single external pin. For automated operation for BER, input defined by signal detection plimentary outputs. Status of Jam will block Limiting Amplifier output to PECL/ECL output stage. 聯(lián)系人：孫宇 13714800771 10. Class of Transceiver ? PECL/CML TTL ? +5V/+ ? 52M/155M/622M/(SONET/SDH) 100M/(Fiber Channel) ? 1*9/2*9 GBIC(Gigabit Interface Converter) SFP(Small Form Pluggable) 2*5/2*10 SFF (Small Form Factor) 聯(lián)系人：孫宇 13714800771 Thanks!
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