光通信用DWDM 器件的制作工藝及其參數(shù)測(cè)試

密集波分復(fù)用(DWDM) 是光纖通信增容的首選方案,而波分復(fù)用/ 解復(fù)用器件(DWDM 器件) 是DWDM 系統(tǒng)中的關(guān)鍵器件。本文討論了DWDM 器件的幾種典型制作方法,其中薄膜濾光片( TFF) 型器件是最富競(jìng)爭(zhēng)力的,并對(duì)TFF 型DWDM 器件的制作工藝、主要特性參數(shù)及其測(cè)試方法開展了實(shí)驗(yàn)研究,對(duì)我們自行研制的四通道TFF 型DWDM 器件的測(cè)試
結(jié)果表明:該器件具有精確的中心波長(zhǎng)、寬且平坦的帶通、小而均勻的插入損耗以及較大的信道隔離度等特性,具有很好的應(yīng)用前景。

Dense wavelength division multiplexing (DWDM) is the preferred technology for expanding capacity in optical fiber communication , and the wavelength division multi/ demultiplexers (DWDM device) is the core component s in DWDM sys2 tems. In this paper , the typical fabrication schemes of DWDM device are discussed , and the thin film filter ( TFF) DWDM de2 vice is very rivalrous. The experimental research is developed on the fabrication process , primary characteristic parameters and corresponding testing means of the TFF DWDM device. The testing result s of a four channel TFF DWDM device which is fab2 ricated in our lab indicate that the device has accurate cent ral wavelength , wide and flat Channel pass - band , less and even Channel inserting loss and large channel isolation Characteristics etc. The applications foreground is very wide.