光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)（Photo-Diode）和普通(tong)二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)一樣，也是由一個(ge)PN結組成的(de)(de)(de)(de)半導(dao)體(ti)器(qi)(qi)件(jian)(jian)，也具有(you)單方向導(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)特性。但在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路中它(ta)不(bu)是作(zuo)(zuo)整(zheng)流(liu)元件(jian)(jian)，而是把光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)信號轉換成電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)信號的(de)(de)(de)(de)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)傳(chuan)感器(qi)(qi)件(jian)(jian)。為幫助大家深(shen)入了解，本(ben)文將(jiang)(jiang)對(dui)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)和發光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)相(xiang)關(guan)知識予以匯(hui)總(zong)。如果您對(dui)本(ben)文即將(jiang)(jiang)要涉及的(de)(de)(de)(de)內容感興趣的(de)(de)(de)(de)話，那(nei)就繼(ji)續往下(xia)閱讀吧(ba)。光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)概述光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)是一種將(jiang)(jiang)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)轉換為電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)的(de)(de)(de)(de)半導(dao)體(ti)器(qi)(qi)件(jian)(jian)，在(zai) p（正(zheng)）和 n（負）層之(zhi)間，存(cun)在(zai)一個(ge)本(ben)征層。光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)接受光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)能(neng)作(zuo)(zuo)為輸入以產(chan)生電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)。光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)也被稱為光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)探(tan)測器(qi)(qi)，光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)傳(chuan)感器(qi)(qi)或(huo)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)探(tan)測器(qi)(qi)。光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)工(gong)作(zuo)(zuo)在(zai)反向偏置條件(jian)(jian)下(xia)，即光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)p-側(ce)與電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池（或(huo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源）的(de)(de)(de)(de)負極(ji)(ji)(ji)相(xiang)連，n-側(ce)與電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池的(de)(de)(de)(de)正(zheng)極(ji)(ji)(ji)相(xiang)連。典(dian)型的(de)(de)(de)(de)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)材料是硅、鍺、磷化砷(shen)化銦鎵和砷(shen)化銦鎵。在(zai)內部，光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)具有(you)濾光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)器(qi)(qi)、內置透鏡和表(biao)面區域。當光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)表(biao)面積增(zeng)加時(shi)，會縮短(duan)響(xiang)應時(shi)間。很(hen)少有(you)光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)看起(qi)來像發光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)二極(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan) (LED)。它(ta)有(you)兩個(ge)終端，如下(xia)所示。較(jiao)小的(de)(de)(de)(de)端子用作(zuo)(zuo)陰極(ji)(ji)(ji)，較(jiao)長(chang)的(de)(de)(de)(de)端子用作(zuo)(zuo)陽極(ji)(ji)(ji)。廣州濱(bin)松光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)生產(chan)廠家推薦成都意(yi)科科技有(you)限責任(ren)公司。西安(an)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓轉換光(guang)(guang)(guang)(guang)(guang)(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)接收(shou)器(qi)(qi)

雪(xue)崩(beng)二極(ji)管(guan)(guan)的結(jie)構(gou)可分(fen)為兩大(da)類：單(dan)漂移(yi)(yi)區雪(xue)崩(beng)二極(ji)管(guan)(guan)和(he)雙(shuang)漂移(yi)(yi)區雪(xue)崩(beng)二極(ji)管(guan)(guan)。單(dan)漂移(yi)(yi)區雪(xue)崩(beng)二極(ji)管(guan)(guan)的結(jie)構(gou)有(you)(you)PN、 PIN、 P NN (或(huo)(huo)N PP )、P NIN (或(huo)(huo)N PIP )、MNN 。其中(zhong)P NN 結(jie)構(gou)工藝簡(jian)單(dan),在(zai)適中(zhong)的電(dian)(dian)流密(mi)度下能(neng)獲得較(jiao)大(da)的負阻，且頻帶較(jiao)寬(kuan)，因此(ci)(ci)在(zai)工業中(zhong)應(ying)用較(jiao)多。雙(shuang)漂移(yi)(yi)區雪(xue)崩(beng)二極(ji)管(guan)(guan)是 1970 年以后出現的，其結(jie)構(gou)為P PNN ，實質上相當于兩個互補單(dan)漂移(yi)(yi)區雪(xue)崩(beng)二極(ji)管(guan)(guan)的串(chuan)聯，從而(er)有(you)(you)效地(di)利用了電(dian)(dian)子和(he)空穴漂移(yi)(yi)空間，因此(ci)(ci)輸(shu)出功(gong)率(lv)(lv)和(he)效率(lv)(lv)均(jun)較(jiao)高。制造(zao)雪(xue)崩(beng)二極(ji)管(guan)(guan)的材料主要是硅和(he)砷化鎵。雪(xue)崩(beng)二極(ji)管(guan)(guan)具有(you)(you)功(gong)率(lv)(lv)大(da)、效率(lv)(lv)高等優點。它是固(gu)體微波源(yuan)，特別是毫米波發射源(yuan)的主要功(gong)率(lv)(lv)器件，泛地(di)使用于雷達(da)、通(tong)信、遙控、遙測、儀器儀表中(zhong)。其主要缺點是噪聲(sheng)較(jiao)大(da)。重慶(qing)納秒光(guang)電(dian)(dian)管(guan)(guan)重慶(qing)紅外光(guang)電(dian)(dian)生產廠(chang)家(jia)推(tui)薦成(cheng)都(dou)意科科技有(you)(you)限(xian)責任公司。

光(guang)電(dian)二極管(guan)的(de)(de)(de)(de)(de)(de)速度(du)（帶(dai)寬）通常(chang)受到電(dian)氣(qi)參數(shu)（電(dian)容和(he)外部電(dian)阻）或(huo)內部效應的(de)(de)(de)(de)(de)(de)限制，如耗竭區(qu)的(de)(de)(de)(de)(de)(de)載(zai)(zai)流子傳輸(shu)時間。(在某些情況下，耗盡區(qu)外產生的(de)(de)(de)(de)(de)(de)載(zai)(zai)流子的(de)(de)(de)(de)(de)(de)相(xiang)對(dui)緩慢的(de)(de)(de)(de)(de)(de)擴散限制了帶(dai)寬）。幾(ji)十千兆赫的(de)(de)(de)(de)(de)(de)帶(dai)寬通常(chang)是(shi)通過(guo)小的(de)(de)(de)(de)(de)(de)有源區(qu)（直(zhi)徑遠(yuan)低于(yu)1毫(hao)米(mi)）和(he)小的(de)(de)(de)(de)(de)(de)吸收體積實(shi)(shi)(shi)現(xian)的(de)(de)(de)(de)(de)(de)。這(zhe)種小面(mian)積的(de)(de)(de)(de)(de)(de)有源器(qi)件仍然是(shi)實(shi)(shi)(shi)用的(de)(de)(de)(de)(de)(de)，特別是(shi)對(dui)于(yu)光(guang)纖(xian)耦合(he)器(qi)件，但它(ta)們將(jiang)可實(shi)(shi)(shi)現(xian)的(de)(de)(de)(de)(de)(de)光(guang)電(dian)流限制在1毫(hao)安或(huo)更(geng)少，對(dui)應的(de)(de)(de)(de)(de)(de)光(guang)功率為≈2毫(hao)瓦或(huo)更(geng)少。更(geng)高(gao)的(de)(de)(de)(de)(de)(de)光(guang)電(dian)流實(shi)(shi)(shi)際上(shang)對(dui)抑制射出噪(zao)聲和(he)熱噪(zao)聲是(shi)可取的(de)(de)(de)(de)(de)(de)。(更(geng)高(gao)的(de)(de)(de)(de)(de)(de)光(guang)電(dian)流在值上(shang)會增加射出噪(zao)聲，但相(xiang)對(dui)于(yu)信號來(lai)說會減少它(ta)）。較(jiao)大(da)的(de)(de)(de)(de)(de)(de)有源區(qu)（直(zhi)徑可達(da)1厘米(mi)）允許處理較(jiao)大(da)的(de)(de)(de)(de)(de)(de)光(guang)束和(he)更(geng)高(gao)的(de)(de)(de)(de)(de)(de)光(guang)電(dian)流，但代價(jia)是(shi)速度(du)較(jiao)低。高(gao)帶(dai)寬（幾(ji)十千兆赫）和(he)高(gao)光(guang)電(dian)流（幾(ji)十毫(hao)安培）的(de)(de)(de)(de)(de)(de)組(zu)合(he)是(shi)在速度(du)匹配的(de)(de)(de)(de)(de)(de)光(guang)電(dian)探測器(qi)中(zhong)實(shi)(shi)(shi)現(xian)的(de)(de)(de)(de)(de)(de)，它(ta)包含幾(ji)個(ge)小面(mian)積的(de)(de)(de)(de)(de)(de)光(guang)電(dian)探測器(qi)，它(ta)們與光(guang)波(bo)導(dao)弱耦合(he)并將(jiang)其光(guang)電(dian)流輸(shu)送到一(yi)個(ge)共同的(de)(de)(de)(de)(de)(de)射頻波(bo)導(dao)結(jie)構(gou)中(zhong)。

光(guang)電(dian)轉(zhuan)換(huan)模(mo)塊還可(ke)進行(xing)濾波(bo)和(he)(he)(he)解調(diao)等信(xin)號(hao)處理，提(ti)高信(xin)號(hao)質(zhi)量，例(li)如(ru)，濾波(bo)器(qi)(qi)(qi)可(ke)以對光(guang)電(dian)轉(zhuan)換(huan)的(de)信(xin)號(hao)進行(xing)濾波(bo)，抑制雜波(bo)和(he)(he)(he)干擾，提(ti)高信(xin)號(hao)的(de)可(ke)靠(kao)性﹔解調(diao)器(qi)(qi)(qi)可(ke)用于調(diao)制和(he)(he)(he)解調(diao)的(de)數字信(xin)號(hao)，實現數字信(xin)號(hao)的(de)傳輸(shu)和(he)(he)(he)控制。4、增強(qiang)(qiang)檢(jian)(jian)(jian)測(ce)靈(ling)敏度(du)(du)一些光(guang)學傳感器(qi)(qi)(qi)工(gong)作時需要高靈(ling)敏度(du)(du)，例(li)如(ru)在(zai)微(wei)小變化(hua)上(shang)進行(xing)檢(jian)(jian)(jian)測(ce)，光(guang)電(dian)轉(zhuan)換(huan)模(mo)塊就可(ke)以配備(bei)放大和(he)(he)(he)濾波(bo)電(dian)路來實現增強(qiang)(qiang)檢(jian)(jian)(jian)測(ce)靈(ling)敏度(du)(du)。光(guang)電(dian)轉(zhuan)換(huan)模(mo)塊是一種功能(neng)強(qiang)(qiang)大、可(ke)靠(kao)性高的(de)光(guang)電(dian)傳感器(qi)(qi)(qi)，其應用領域非常泛，包括自動控制、光(guang)通信(xin)、精密測(ce)量和(he)(he)(he)檢(jian)(jian)(jian)測(ce)等諸多領域，在(zai)使用光(guang)電(dian)轉(zhuan)換(huan)模(mo)塊的(de)過程中(zhong)，我們需要根據具體場景選擇適合(he)的(de)型號(hao)和(he)(he)(he)參數，并正(zheng)確(que)安裝(zhuang)和(he)(he)(he)調(diao)試，從而(er)保證其有效性和(he)(he)(he)可(ke)靠(kao)性，進而(er)推(tui)動科(ke)學技(ji)術的(de)不斷發展。重慶(qing)高速光(guang)電(dian)生產(chan)廠家(jia)推(tui)薦成都意科(ke)科(ke)技(ji)有限責任公(gong)司。

影響(xiang)光(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)二(er)(er)(er)極(ji)管(guan)系統的(de)(de)主要非(fei)理想情況稱(cheng)(cheng)為(wei)(wei)暗(an)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)，因為(wei)(wei)即(ji)使(shi)沒(mei)有照(zhao)明，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)也會流(liu)(liu)過光(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)二(er)(er)(er)極(ji)管(guan)。流(liu)(liu)過二(er)(er)(er)極(ji)管(guan)的(de)(de)總電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)是暗(an)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)和(he)(he)光(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)總和(he)(he)。如果這些(xie)強度產(chan)生(sheng)的(de)(de)光(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)大(da)小與暗(an)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)大(da)小相(xiang)(xiang)似，則暗(an)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)將限(xian)制系統準(zhun)確測量低光(guang)(guang)(guang)強度的(de)(de)能力。這種運算放(fang)大(da)器(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路稱(cheng)(cheng)為(wei)(wei)跨阻放(fang)大(da)器(qi) (TIA)。它專門用于將電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)信(xin)號(hao)轉換為(wei)(wei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)信(xin)號(hao)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)比由反饋電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻RF的(de)(de)值決定(ding)。運算放(fang)大(da)器(qi)的(de)(de)同相(xiang)(xiang)輸(shu)入端(duan)接地，如果我(wo)們應用虛(xu)擬短(duan)路假(jia)設，我(wo)們知道反相(xiang)(xiang)輸(shu)入端(duan)將始終處于大(da)約 0 V。因此，光(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)二(er)(er)(er)極(ji)管(guan)的(de)(de)陰極(ji)和(he)(he)陽極(ji)都保持在 0 V。我(wo)不相(xiang)(xiang)信(xin)“光(guang)(guang)(guang)伏(fu)”是這種基于運算放(fang)大(da)器(qi)的(de)(de)實現的(de)(de)完(wan)全準(zhun)確的(de)(de)名稱(cheng)(cheng)。我(wo)不認為(wei)(wei)光(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)二(er)(er)(er)極(ji)管(guan)的(de)(de)功能類似于通過光(guang)(guang)(guang)伏(fu)效應產(chan)生(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)的(de)(de)太陽能電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池。但是“光(guang)(guang)(guang)伏(fu)”是公認的(de)(de)術語，不管(guan)我(wo)喜不喜歡。“零(ling)偏(pian)置模(mo)式(shi)”更好(hao)，我(wo)認為(wei)(wei)，因為(wei)(wei)我(wo)們可以在光(guang)(guang)(guang)伏(fu)或光(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)導模(mo)式(shi)下使(shi)用相(xiang)(xiang)同的(de)(de) TIA 和(he)(he)光(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)二(er)(er)(er)極(ji)管(guan)，因此沒(mei)有反向(xiang)偏(pian)置電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)是顯著的(de)(de)區別(bie)因素。納秒光(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)生(sheng)產(chan)廠家(jia)推薦成都意科科技有限(xian)責任公司。四川濱松(song)光(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)生(sheng)產(chan)廠家(jia)

成都(dou)高速光(guang)電生(sheng)產廠(chang)家推薦成都(dou)意科科技有限責任公(gong)司。西(xi)安電流(liu)電壓轉換光(guang)電接收器

激(ji)(ji)光(guang)(guang)(guang)二極(ji)(ji)管(guan)(guan)(guan)和發光(guang)(guang)(guang)二極(ji)(ji)管(guan)(guan)(guan)的區(qu)別激(ji)(ji)光(guang)(guang)(guang)二極(ji)(ji)管(guan)(guan)(guan)和發光(guang)(guang)(guang)二極(ji)(ji)管(guan)(guan)(guan)都是(shi)使用的半導(dao)體(ti)材(cai)料發光(guang)(guang)(guang)，且從名字上看，雖然兩者(zhe)很相似，但它們(men)之間更多(duo)的是(shi)不同(tong)點。1、定(ding)義(yi)區(qu)別激(ji)(ji)光(guang)(guang)(guang)二極(ji)(ji)管(guan)(guan)(guan)是(shi)半導(dao)體(ti)激(ji)(ji)光(guang)(guang)(guang)器(qi)，英文是(shi)Laser Diode，縮(suo)寫(xie)LD。發光(guang)(guang)(guang)二極(ji)(ji)管(guan)(guan)(guan)是(shi)我(wo)們(men)常(chang)說的LED，是(shi)常(chang)見的照明、顯示器(qi)件(jian)。2、原(yuan)理(li)區(qu)別激(ji)(ji)光(guang)(guang)(guang)二極(ji)(ji)管(guan)(guan)(guan)產生激(ji)(ji)光(guang)(guang)(guang)是(shi)通過受(shou)激(ji)(ji)輻(fu)射原(yuan)理(li)。發光(guang)(guang)(guang)二極(ji)(ji)管(guan)(guan)(guan)發光(guang)(guang)(guang)是(shi)自發輻(fu)射原(yuan)理(li) 。3、光(guang)(guang)(guang)質量(liang)(liang)區(qu)別激(ji)(ji)光(guang)(guang)(guang)二極(ji)(ji)管(guan)(guan)(guan)的光(guang)(guang)(guang)能(neng)量(liang)(liang)聚集、傳(chuan)輸(shu)方向準直、單色性好、相干(gan)性強。發光(guang)(guang)(guang)二極(ji)(ji)管(guan)(guan)(guan)光(guang)(guang)(guang)能(neng)量(liang)(liang)發散、傳(chuan)輸(shu)方向不同(tong)。西安電流電壓(ya)轉換光(guang)(guang)(guang)電接收(shou)器(qi)

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