發(fā)布時(shí)間：2018-07-08 20:58

  本文選題：光通信 + 光碼分多址��； 參考：《光學(xué)學(xué)報(bào)》2014年05期

【摘要】：可集成、易調(diào)諧的光編解碼器是光碼分多址(OCDMA)系統(tǒng)集成化的關(guān)鍵模塊之一�；隈詈想p環(huán)陣列提出了一種新型的光編解碼器。該編解碼器通過調(diào)諧雙環(huán)下載端反射波長(zhǎng)以及集成于總線的相移器的相位,實(shí)現(xiàn)了OCDMA系統(tǒng)的二維相干編解碼�；隈詈夏＠碚�,建立了耦合雙環(huán)陣列的傳輸矩陣方程。用于編解碼器的雙環(huán)半徑分別為50μm和48μm,陣列中四組雙環(huán)的反射中心波長(zhǎng)分別為1535,1535.2,1535.4,1535.6nm,信道寬度為17GHz,反射譜3dB帶寬約為0.14nm,信號(hào)基本上不會(huì)出現(xiàn)干擾,保證了用戶發(fā)送和接收信號(hào)的準(zhǔn)確性。相應(yīng)的自相關(guān)峰值旁瓣比(P/W)約為5,互相關(guān)峰值比(P/C)約為7,可以容納用戶數(shù)為96個(gè)。
[Abstract]:Integrated and tunable optical codec is one of the key modules of optical code division multiple access (OCDMA) system integration. A novel optical codec based on coupled double loop array is proposed. By tuning the reflection wavelength at the download end of the double loop and the phase of the phase shifter integrated into the bus, the encoder and decoder can realize the two-dimensional coherent coding and decoding of OCDMA system. Based on the coupled mode theory, the transfer matrix equation of coupled double loop array is established. The radii of the two rings for the codec are 50 渭 m and 48 渭 m, respectively. The central wavelength of the four groups of double rings in the array is 1535. 5 / 2 1535. 2 / 1535.4 / 1535. 6 nm respectively. The channel width is 17 GHz, and the 3dB bandwidth of the reflectance spectrum is about 0. 14 nm. The signal basically does not appear interference. The accuracy of sending and receiving signals is ensured. The corresponding autocorrelation peak sidelobe ratio (P / W) is about 5, and the peak cross-correlation ratio (P / C) is about 7, which can accommodate 96 users.
【作者單位】： 天津大學(xué)精密儀器與光電子工程學(xué)院光電信息技術(shù)教育部重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家973計(jì)劃(2010CB327806,2014CB340103) 國(guó)家自然科學(xué)基金(61377077) 天津市科技支撐重點(diǎn)項(xiàng)目(11ZCKFSF00400)
【分類號(hào)】：TN929.1

【參考文獻(xiàn)】

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1 李傳起;周，

本文編號(hào)：2108719