本文選題：硅與鈮酸鋰復(fù)合集成波導(dǎo) + 定向耦合��； 參考：《南京大學(xué)學(xué)報(bào)(自然科學(xué))》2017年03期

【摘要】：結(jié)合鈮酸鋰薄膜的研究現(xiàn)狀,提出一種硅與鈮酸鋰復(fù)合集成的波導(dǎo)結(jié)構(gòu),該波導(dǎo)結(jié)構(gòu)能夠?qū)⒐杌某墒旃に嚺c鈮酸鋰材料的特性結(jié)合,利用鈮酸鋰的高雙折射特性,該波導(dǎo)結(jié)構(gòu)在實(shí)現(xiàn)偏振控制器件方面具有一系列獨(dú)特的優(yōu)勢(shì).基于硅與鈮酸鋰復(fù)合的波導(dǎo)結(jié)構(gòu),設(shè)計(jì)了兩類(lèi)無(wú)源器件:定向耦合型偏振分離器和定向耦合型偏振分離轉(zhuǎn)換器.分別采用光束傳輸法(BPM)和時(shí)域有限差分法(FDTD)對(duì)兩類(lèi)器件進(jìn)行了仿真與性能分析,仿真計(jì)算結(jié)果表明,偏振分離器能夠?qū)崿F(xiàn)TE模和TM模的分離,且消光比高于30dB,在保證消光比大于10dB的情況下,其帶寬約為70nm,工藝容差達(dá)100nm;偏振分離轉(zhuǎn)換器能夠?qū)崿F(xiàn)TM模向TE模的轉(zhuǎn)換,且消光比達(dá)20dB.兩類(lèi)器件均具有尺寸小、結(jié)構(gòu)簡(jiǎn)單、工藝上易于實(shí)現(xiàn)等優(yōu)點(diǎn).
[Abstract]:According to the research status of lithium niobate thin films, a kind of composite waveguide structure is proposed, which combines the mature process of silicon with the characteristics of lithium niobate, and makes use of the high birefringence of lithium niobate. The waveguide structure has a series of unique advantages in the realization of polarization controller. Based on the waveguide structure of silicon and lithium niobate, two kinds of passive devices are designed: directional coupling polarization separator and directional coupling polarization separation converter. The beam propagation method (BPM) and the finite-difference time-domain method (FDTD) are used to simulate and analyze the performance of the two kinds of devices. The simulation results show that the polarization separator can separate te mode from TM mode. The extinction ratio is more than 30 dB, the bandwidth is about 70 nm and the process tolerance is 100 nm when the extinction ratio is more than 10 dB. The polarization separation converter can realize the conversion of TM mode to te mode, and the extinction Prida is 20 dB. Both kinds of devices have the advantages of small size, simple structure and easy to be realized in technology.
【作者單位】： 山東大學(xué)信息科學(xué)與工程學(xué)院;山東大學(xué)物理學(xué)院;
【基金】：國(guó)家自然科學(xué)基金(61201210,61571273) 山東省科技開(kāi)發(fā)項(xiàng)目(2014GGH201006) IPOC開(kāi)放基金(BUPT) 山東大學(xué)基礎(chǔ)研究基金
【分類(lèi)號(hào)】：TN256

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 劉金龍,李惠章,施仲堅(jiān),楊銀蘭,翁文生;鈮酸鋰大單晶的生長(zhǎng)及其性能[J];物理學(xué)報(bào);1983年04期

2 徐玉恒,趙業(yè)權(quán),王躍森,王君策,萬(wàn)立德,邊少平;鈮酸鋰渥拉斯頓棱鏡[J];量子電子學(xué);1991年01期

3 沈博英;鈮酸鋰多晶料燒結(jié)方法[J];人工晶體學(xué)報(bào);1991年Z1期

4 徐潤(rùn)源;鐵電單晶鈮酸鋰的極化方法研究[J];硅酸鹽學(xué)報(bào);1983年01期

5 張一兵;鈮酸鋰的晶體結(jié)構(gòu)[J];上饒師范學(xué)院學(xué)報(bào);2001年06期

6 袁海林;邱慧珠;羅t，

本文編號(hào)：2096569