光纖收發器AB端有區別嗎

光(guang)(guang)(guang)纖(xian)(xian)收(shou)發器按光(guang)(guang)(guang)纖(xian)(xian)芯數(shu)分類有2種(zhong)，一(yi)種(zhong)是(shi)單模(mo)(mo)雙(shuang)纖(xian)(xian)光(guang)(guang)(guang)纖(xian)(xian)收(shou)發器，一(yi)種(zhong)是(shi)單模(mo)(mo)單纖(xian)(xian)光(guang)(guang)(guang)纖(xian)(xian)收(shou)發器。我(wo)們講到的(de)A，B端口只有單模(mo)(mo)單纖(xian)(xian)光(guang)(guang)(guang)纖(xian)(xian)收(shou)發器才會使(shi)用(yong)(yong)到，因為單模(mo)(mo)單纖(xian)(xian)收(shou)發器它(ta)是(shi)通(tong)過(guo)一(yi)芯光(guang)(guang)(guang)纖(xian)(xian)來(lai)傳(chuan)輸，那(nei)么發射和接收(shou)光(guang)(guang)(guang)都是(shi)同時通(tong)過(guo)一(yi)根光(guang)(guang)(guang)纖(xian)(xian)芯來(lai)傳(chuan)輸。這樣的(de)情況，要(yao)實現正(zheng)常通(tong)訊(xun)就必須(xu)用(yong)(yong)到2種(zhong)波長的(de)光(guang)(guang)(guang)來(lai)區分。

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單模單纖收發器的光模塊發射(she)光波長(chang)有(you)2個，一(yi)般短距離是1310nm/1550nm，遠距離是1490nm/1550nm。這樣一(yi)對(dui)收發器的互連的2端(duan)就(jiu)會存在區(qu)別，一(yi)端(duan)收發器發射(she)1310nm接收1550nm。另(ling)一(yi)端(duan)則(ze)是發射(she)1550nm，接收1310nm。那(nei)么方便用(yong)戶區(qu)分(fen)，一(yi)般就(jiu)會用(yong)字(zi)母(mu)來代(dai)替(ti)，就(jiu)出現了A端(duan)（1310nm/1550nm），B端(duan)（1550nm/1310nm）。用(yong)戶使用(yong)必須AB配(pei)對(dui)使用(yong)，不可AA或者(zhe)BB連接。

如何使用光纖收發器的AB端

光(guang)(guang)(guang)纖(xian)(xian)(xian)(xian)(xian)收(shou)(shou)(shou)(shou)發(fa)(fa)(fa)器(qi)(qi)的(de)(de)AB端(duan)(duan)(duan)(duan)通常是(shi)(shi)成對使(shi)用(yong)，A端(duan)(duan)(duan)(duan)用(yong)來發(fa)(fa)(fa)射(she)(she)，B端(duan)(duan)(duan)(duan)用(yong)來接(jie)收(shou)(shou)(shou)(shou)。人們根據連(lian)接(jie)光(guang)(guang)(guang)纖(xian)(xian)(xian)(xian)(xian)的(de)(de)芯(xin)(xin)數可分(fen)為(wei)單纖(xian)(xian)(xian)(xian)(xian)收(shou)(shou)(shou)(shou)發(fa)(fa)(fa)器(qi)(qi)與雙纖(xian)(xian)(xian)(xian)(xian)收(shou)(shou)(shou)(shou)發(fa)(fa)(fa)器(qi)(qi)，但在(zai)市面上使(shi)用(yong)單纖(xian)(xian)(xian)(xian)(xian)收(shou)(shou)(shou)(shou)發(fa)(fa)(fa)器(qi)(qi)的(de)(de)人較多(duo)。單纖(xian)(xian)(xian)(xian)(xian)收(shou)(shou)(shou)(shou)發(fa)(fa)(fa)器(qi)(qi)兩(liang)(liang)端(duan)(duan)(duan)(duan)分(fen)別是(shi)(shi)A端(duan)(duan)(duan)(duan)與B端(duan)(duan)(duan)(duan)，這兩(liang)(liang)端(duan)(duan)(duan)(duan)的(de)(de)波(bo)長(chang)(chang)不同，發(fa)(fa)(fa)射(she)(she)端(duan)(duan)(duan)(duan)的(de)(de)波(bo)長(chang)(chang)比接(jie)收(shou)(shou)(shou)(shou)端(duan)(duan)(duan)(duan)的(de)(de)波(bo)長(chang)(chang)短(duan)，而雙纖(xian)(xian)(xian)(xian)(xian)收(shou)(shou)(shou)(shou)發(fa)(fa)(fa)器(qi)(qi)其(qi)實是(shi)(shi)不分(fen)AB端(duan)(duan)(duan)(duan)的(de)(de)，因(yin)為(wei)它(ta)兩(liang)(liang)端(duan)(duan)(duan)(duan)的(de)(de)波(bo)長(chang)(chang)是(shi)(shi)一(yi)致的(de)(de)，只是(shi)(shi)在(zai)連(lian)接(jie)時分(fen)TX（發(fa)(fa)(fa)射(she)(she)）端(duan)(duan)(duan)(duan)和RX（接(jie)收(shou)(shou)(shou)(shou)）端(duan)(duan)(duan)(duan)。單纖(xian)(xian)(xian)(xian)(xian)顧名(ming)思義是(shi)(shi)一(yi)根光(guang)(guang)(guang)纖(xian)(xian)(xian)(xian)(xian)，也有行內人愛稱單芯(xin)(xin)收(shou)(shou)(shou)(shou)發(fa)(fa)(fa)器(qi)(qi)，是(shi)(shi)指在(zai)一(yi)個(ge)光(guang)(guang)(guang)纖(xian)(xian)(xian)(xian)(xian)上進行兩(liang)(liang)端(duan)(duan)(duan)(duan)信號的(de)(de)收(shou)(shou)(shou)(shou)發(fa)(fa)(fa)，因(yin)為(wei)在(zai)單模(mo)單纖(xian)(xian)(xian)(xian)(xian)收(shou)(shou)(shou)(shou)發(fa)(fa)(fa)器(qi)(qi)的(de)(de)內部(bu)使(shi)用(yong)的(de)(de)光(guang)(guang)(guang)模(mo)塊帶有兩(liang)(liang)個(ge)發(fa)(fa)(fa)射(she)(she)光(guang)(guang)(guang)波(bo)長(chang)(chang)，而雙纖(xian)(xian)(xian)(xian)(xian)是(shi)(shi)通過兩(liang)(liang)根光(guang)(guang)(guang)纖(xian)(xian)(xian)(xian)(xian)交叉連(lian)接(jie)的(de)(de)，內部(bu)的(de)(de)光(guang)(guang)(guang)膜塊只有一(yi)個(ge)波(bo)長(chang)(chang)。