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波分復(fù)用器

WDM Wavelength Division Multiplexing ，波分復(fù)用器
CWDM Coarse Wavelength Division Multiplexing ，稀疏波分復(fù)用器，也稱粗波分復(fù)用器
DWDM Dense Wavelength Division Multiplexing ，密集波分復(fù)用器

WDM是將一系列載有信息、但波長不同的光信號合成一束，沿著單根光纖傳輸；在接收端再用某種方法，將各個不同波長的光信號分開的通信技術(shù)。這種技術(shù)可以同時在一根光纖上傳輸多路信號，每一路信號都由某種特定波長的光來傳送，這就是一個波長信道。
在同一根光纖中同時讓兩個或兩個以上的光波長信號通過不同光信道各自傳輸信息，稱為光波分復(fù)用技術(shù)，簡稱WDM。光波分復(fù)用包括頻分復(fù)用和波分復(fù)用。光頻分復(fù)用（frequency-division multiplexing,FDM）技術(shù)和光波分復(fù)用（WDM）技術(shù)無明顯區(qū)別，因為光波是電磁波的一部分，光的頻率與波長具有單一對應(yīng)關(guān)系。通常也可以這樣理解，光頻分復(fù)用指光頻率的細分,光信道非常密集。光波分復(fù)用指光頻率的粗分，光信道相隔較遠，甚至處于光纖不同窗口。
光波分復(fù)用一般應(yīng)用波長分割復(fù)用器和解復(fù)用器（也稱合波/分波器）分別置于光纖兩端，實現(xiàn)不同光波的耦合與分離。這兩個器件的原理是相同的。光波分復(fù)用器的主要類型有熔融拉錐型，介質(zhì)膜型，光柵型和平面型四種。其主要特性指標(biāo)為插入損耗和隔離度。通常，由于光鏈路中使用波分復(fù)用設(shè)備后，光鏈路損耗的增加量稱為波分復(fù)用的插入損耗。當(dāng)波長11,l2通過同一光纖傳送時，在與分波器中輸入端l2的功率與11輸出端光纖中混入的功率之間的差值稱為隔離度。
現(xiàn)在市場使用WDM技術(shù)的產(chǎn)品主要有CWDM和DWDM。

波分復(fù)用器

AWG DWDM波分復(fù)用器 (29)

40-CH 100G Athermal AWG Use within the C -band release of DWDM system Offer different product packages, including special metal box and 19” 1U rackmount. Established silica-on-silicon Low chromatic dispersion 40-CH 100G Thermal AWG Use within the C -band release of DWDM system Offer different product packages, including special metal box and 19” 1U rackmount. Established silica-on-silicon Low chromatic dispersion 80-CH 50G AWG 80-CH 50G Athermal AWG module in 1U Rackmount

Fused WDM波分復(fù)用器 (44)

Fused Wavelength Division Multiplexer（1310/1550nm） Offer very low insertion loss, low polarization dependence, high isolation and excellent environmental stability Compact Size Top Quality-Price ratio Fused Wavelength Division Multiplexer（980/1550,1480/1550nm） Offer very low insertion loss, low polarization dependence, high isolation and excellent environmental stability Compact Size Top Quality-Price ratio Fused WDM Module（1310/1550nm） Top Quality-Price ratio Low insertion loss Long-HauI Uni and Bi-Directional Digital, Hybrid and Am-video Systems High-Speed Multi-Wavelength Systems

FWDM波分復(fù)用器 (6)

3 Ports Multimode FWDM（1310/1550nm） 3 Ports FWDM（1310/1550nm） 3 Ports FWDM（1310/1490/1550nm） 3 Ports FWDM（980/1550,1480/1550nm） FWDM Module Wide Operating Wavelength Range Ultra Flat Wide Passband High Stability and reliability Epoxy-free on Optical Path 3 port FWDM in 1U Rackmount Wide Operating Wavelength Range Ultra Flat Wide Passband Epoxy-free on Optical Path FTTH Tri-Play System

Mini微型粗波分復(fù)用器 (39)

F-tone’s Mini size Coarse Wavelength Division Multiplexers(Mini CWDM, MCWDM), are integrated optical modules using F-tone’s proprietary optical bench platform which can significantly improve optical performance, while also reduce manufacturing costs. Compare to the common standard CWDM module, F-tone's Mini CWDM takes much smaller package size. Much space can be saved in the application and meanwhile the performance and parameters are much better. All F-tone's CWDM modules are Telcordia qualified.(Meet TELCORDIA GR-1221-CORE)

其它種類波分復(fù)用器產(chǎn)品系列 (131)

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密集波分復(fù)用器 (34)

100GHz DWDM Module(4,8,16 Channel) 200GHz DWDM Module(4,8,16 Channel) 100G,200G 1X2 DWDM Device (3Ports) 100G,200G DWDM OADM Module (4,8-Channel) Provides ITU channel center wavelength, low insertion loss, high channel isolation, wide pass band, low temperature sensitivity and epoxy free optical path Wavelength add/drop in telecommunication network system 100GHz/200GHz DWDM Module in 1U Rackmount Wide pass band High Stability and reliability Epoxy-free on Optical Path Fiber Optical Amplifier 100GHz/200GHz DWDM Module in LGX Box Wide pass band High Stability and reliability Epoxy-free on Optical Path Fiber Optical Amplifier

粗波分復(fù)用器 (80)

CWDM是一種支持多協(xié)議傳送的波分復(fù)用技術(shù)。CWDM系統(tǒng)利用復(fù)用器將不同波長承載的光信號復(fù)用至單根光纖進行傳輸，在鏈路的接收端，借助解復(fù)用器將分解后的波長送給不同的光纖，連接到相應(yīng)的接收設(shè)備。CWDM信道間隔通常比DWDM寬得多，為區(qū)別起見，故稱其為粗波分復(fù)用。

WDM模塊 (3)

北億纖通專業(yè)研發(fā)生產(chǎn)WDM模塊，其主要產(chǎn)品有：AWG系列、TFF CWDM/LAN WDM Block、FA subassembly等

波分復(fù)用器

10M~2.5G,OEO光中繼器、波長轉(zhuǎn)換器、單多模轉(zhuǎn)換器

FT-CWDM-OEO-X 具有光中繼、波長轉(zhuǎn)換、傳輸介質(zhì)在單模光纖與多模光纖之間轉(zhuǎn)換等等功能。它適用于在10Mb/s～2.5 Gb/s 速率范圍內(nèi)各種數(shù)字信號(SDH、ATM 、以太網(wǎng)、光纖通道)和模擬信號在光纖中的復(fù)用傳輸和波長轉(zhuǎn)換。通常用于高質(zhì)量網(wǎng)絡(luò)電視(IPTV)，網(wǎng)絡(luò)監(jiān)控，高清電視(HDTV)，遠程教育，遠程醫(yī) 療等領(lǐng)域，可配合模擬光端機，數(shù)字光端機和帶光口的網(wǎng)絡(luò)交換機使用。