本文關(guān)鍵詞： 可調(diào)諧激光器 V型腔可調(diào)諧激光器 甲烷檢測 自混頻效應(yīng)　出處：《浙江大學(xué)》2016年博士論文　論文類型：學(xué)位論文

【摘要】：21世紀(jì),隨著物聯(lián)網(wǎng)概念的興起,消費者和企業(yè)級網(wǎng)絡(luò)用戶急需一種成本低廉可靠性高的網(wǎng)絡(luò)解決方案,而傳感器領(lǐng)域也迎來了小型化、集成化、分布式的潮流�？烧{(diào)諧半導(dǎo)體激光器在這兩個方面都扮演了重要角色,盡管在過去30多年來取得了矚目的進步,仍不能滿足目前市場提出的低成本、高性能等需求。本課題圍繞V型腔半導(dǎo)體激光器(V-Cavity Laser, VCL),展開了針對熱調(diào)諧VCL的理論與實驗工作,并拓展了其針對甲烷吸收檢測和測量學(xué)方面的應(yīng)用。本論文首先通過歸納比較V型腔激光器的各調(diào)諧方式,提出一種片上集成加熱電阻的V型腔激光器。作為原有V型腔激光器的改進版本,該器件繼承了制作封裝成本低、緊湊度高的特點。通過仿真,我們設(shè)計了頂部加熱的片上電阻結(jié)構(gòu)；證明該結(jié)構(gòu)與原有電注入調(diào)諧比較,在理論上具有更高的調(diào)諧效率。實驗上,該激光器在1550nm波段獲得了28nm的單電極數(shù)字式調(diào)諧范圍和51nm的單溫度調(diào)諧范圍,以及采用簡單電流控制算法的10.8nm準(zhǔn)連續(xù)調(diào)諧范圍。根據(jù)實驗結(jié)果計算的單電極調(diào)諧效率為0.136nm/mW,顯著高于原有VCL。在線寬和信道熱切換時間性能均有進步的前提下,該器件將VCL的直接調(diào)制性能提升了一個臺階。2.5Gbps直接調(diào)制的25km標(biāo)準(zhǔn)單模光纖傳輸功率代價低于0.3dB,5Gbps和8.5Gbps直接調(diào)制實現(xiàn)了10km單模光纖的無誤碼傳輸,且在實驗上首次獲得了VCL上10Gbps直接調(diào)制的10km傳輸眼圖。這一系列優(yōu)越性能使集成片上加熱電阻的V型腔激光器可以應(yīng)用于波分復(fù)用光網(wǎng)絡(luò)、數(shù)據(jù)中心光網(wǎng)絡(luò)和傳感器。針對氣體傳感應(yīng)用,我們設(shè)計并制作了1650nm波段的V型腔激光器。該器件實現(xiàn)了1650nm附近16nm的調(diào)諧范圍,35dB左右的邊模抑制比,和低于500kHz的線寬。作為一種廉價的可調(diào)諧光源,1650nm的VCL有望占據(jù)一部分甲烷檢測市場。在測量學(xué)領(lǐng)域,我們研究了VCL的自混頻效應(yīng)。采用閾值方程模型,我們驗證了VCL自混頻效應(yīng)用于速度、位移的檢測,以及結(jié)合調(diào)頻連續(xù)波的測距。實驗上,我們利用自主開發(fā)的集成了片上光電二極管的VCL,實現(xiàn)了對目標(biāo)物震動頻率和幅度的檢測。這種集成了光源、探測器和干涉光路的檢測方案將受到傳感器市場的歡迎。
[Abstract]:In 21th century, with the rise of the concept of the Internet of things, consumers and enterprise-level network users urgently need a low-cost and reliable network solution, and the sensor field has also ushered in miniaturization and integration. Distributed power flow. Tunable semiconductor lasers play an important role in both areas. Despite the remarkable progress made in the past 30 years, they still can not meet the low cost proposed by the current market. High performance and other requirements. The theoretical and experimental work of thermal tuned VCL has been carried out around V-Cavity Laser. VCLs. And the application of methane absorption detection and measurement is expanded. Firstly, the tuning modes of V-cavity laser are summarized and compared. A V cavity laser with on-chip integrated heating resistance is proposed. As an improved version of the original V-cavity laser, the device inherits the characteristics of low packaging cost and high compactness. We have designed the on-chip resistance structure which is heated at the top of the chip. It is proved that the structure has higher tuning efficiency in theory than that in the original electric injection tuning. The laser has a single electrode digital tuning range of 28 nm and a single temperature tuning range of 51 nm in the 1550nm band. The tuning efficiency of single electrode is 0.136 nm / mW, which is calculated from the experimental results and the quasi-continuous tuning range of 10.8 nm using simple current control algorithm. It is significantly higher than the original VCL.The performance of both on-line width and channel hot switching time are improved. This device improves the direct modulation performance of VCL by a step of 2.5 Gbps. The transmission power cost of 25km standard single-mode fiber with direct modulation is less than 0.3 dB. The direct modulation of 5Gbps and 8.5Gbps realizes the BER transmission of 10km single-mode fiber. The 10km transmission eye diagram of 10Gbps direct modulation on VCL is obtained for the first time. This series of superior performance makes V-cavity laser with on-chip heating resistance applicable to wavelength division multiplexing optical network. . Data center optical networks and sensors. For gas sensing applications, we have designed and fabricated a 1650nm V-cavity laser with a tuning range of 1650nm. The edge-mode rejection ratio of about 35dB and linewidth of less than 500kHz. As a cheap tunable light source, VCL at 1650nm is expected to occupy part of the methane detection market. We study the self-mixing effect of VCL. Using the threshold equation model, we verify that the self-mixing effect of VCL is used to detect velocity, displacement, and range measurement combined with frequency-modulated continuous wave. We use the self-developed VCLs to integrate the on-chip photodiodes to realize the detection of the vibration frequency and amplitude of the target, which is an integrated light source. Detector and interference detection scheme will be welcomed by the sensor market.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2016
【分類號】：TN248.4

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