發(fā)布時(shí)間：2018-06-28 01:22

  本文選題：激光泵浦 + 激光泵浦控制系統(tǒng)　； 參考：《吉林大學(xué)》2015年碩士論文

【摘要】：隨著近年來光纖通信技術(shù)的發(fā)展，摻鉺光纖放大器（Erbium-Doped FiberAmplifier, EDFA）的應(yīng)用也日漸廣泛。為了滿足EDFA對(duì)大功率、高穩(wěn)定度激光泵浦源的需要，本文設(shè)計(jì)制作了一款600mW激光泵浦源控制系統(tǒng)。該控制系統(tǒng)集成了半導(dǎo)體驅(qū)動(dòng)及溫度控制兩功能，并以市場(chǎng)常見的激光泵浦模塊為應(yīng)用對(duì)象。通過匹配泵浦模塊的參數(shù)進(jìn)行控制系統(tǒng)的電路設(shè)計(jì)，最終組成完整的激光泵浦源。其中泵浦模塊就是一種將大功率激光二極管（LD）與半導(dǎo)體制冷器（TEC）封裝在一起的蝶形器件。 論文中，首先以恒流激勵(lì)原理設(shè)計(jì)激光泵浦源控制系統(tǒng)的驅(qū)動(dòng)單元，接著以TEC作為激光泵浦源的溫度控制手段，設(shè)計(jì)了控制系統(tǒng)的溫度控制單元。然后，分別對(duì)控制系統(tǒng)的驅(qū)動(dòng)與溫控單元進(jìn)行了相關(guān)的電學(xué)實(shí)驗(yàn)測(cè)試，，主要包括驅(qū)動(dòng)電流穩(wěn)定性測(cè)試、驅(qū)動(dòng)單元模擬實(shí)驗(yàn)、溫控單元溫度控制能力實(shí)驗(yàn)等。最后，選定一款泵浦模塊，制作了一臺(tái)完整的激光泵浦源樣機(jī)，并對(duì)其激光輸出做了詳細(xì)的光學(xué)實(shí)驗(yàn)測(cè)試與研究，主要包括輸出光功率與驅(qū)動(dòng)電流關(guān)系實(shí)驗(yàn)、輸出光功率穩(wěn)定度實(shí)驗(yàn)研究與激光光譜測(cè)試等。 經(jīng)過相關(guān)實(shí)驗(yàn)研究，激光泵浦源控制系統(tǒng)驅(qū)動(dòng)單元的輸出電流范圍為0-1A，在0.6A的輸出電流條件下，具有508ppm的1小時(shí)短期穩(wěn)定度和1448ppm的8小時(shí)長(zhǎng)期穩(wěn)定度。激光泵浦源控制系統(tǒng)的溫控單元具有最大10W的溫度控制輸出功率。之后對(duì)應(yīng)用該控制系統(tǒng)的激光泵浦源樣機(jī)進(jìn)行參數(shù)測(cè)定。激光泵浦源樣機(jī)的輸出光功率可達(dá)600mW，中心波長(zhǎng)為975.2nm，，在輸出激光150mW功率條件下，短期光功率穩(wěn)定度為±0.008dB，在輸出光功率為400mW的條件下，長(zhǎng)期光功率穩(wěn)定度為±0.05dB。 本文的獨(dú)特性工作包括： 1.根據(jù)EDFA對(duì)激光泵浦源的實(shí)際要求，將半導(dǎo)體驅(qū)動(dòng)技術(shù)與溫度控制集合在一個(gè)控制系統(tǒng)中，具有較強(qiáng)的實(shí)用性； 2.合理設(shè)計(jì)了激光泵浦源控制系統(tǒng)驅(qū)動(dòng)與溫控單元的電路結(jié)構(gòu)，所制作的控制系統(tǒng)具有較高的驅(qū)動(dòng)穩(wěn)定度與較強(qiáng)的溫度控制能力； 3.綜合考量了激光泵浦模塊的實(shí)際要求，后期通過簡(jiǎn)單調(diào)整，就可以控制相同封裝結(jié)構(gòu)、不同型號(hào)的泵浦模塊，具有一定的普適性。 與市場(chǎng)同類產(chǎn)品相比，應(yīng)用了此控制系統(tǒng)的激光泵浦源樣機(jī)，具有較高的輸出激光穩(wěn)定度，基本達(dá)到了市場(chǎng)中高端產(chǎn)品的水平，表明所設(shè)計(jì)的激光泵浦源控制系統(tǒng)具有較強(qiáng)的控制能力。說明了本文所設(shè)計(jì)制作的600mW激光泵浦源控制系統(tǒng)能夠滿足設(shè)計(jì)要求，具有一定的實(shí)用價(jià)值。
[Abstract]:With the development of optical fiber communication technology in recent years, Erbium-Doped Fiber Amplifier (EDFA) is widely used. In order to meet the demand of EDFA for high power and high stability laser pumping source, a 600MW laser pump source control system is designed and fabricated in this paper. The control system integrates semiconductor driving and temperature control functions, and takes the laser pump module which is commonly used in the market as the application object. The circuit of the control system is designed by matching the parameters of the pump module, and finally a complete laser pump source is formed. The pump module is a kind of butterfly device which encapsulates high power laser diode (LD) and semiconductor cooler (TEC). In this paper, the driving unit of the laser pump source control system is designed based on the constant current excitation principle, and then the temperature control unit of the control system is designed by using TEC as the temperature control method of the laser pump source. Then, the electrical experiments on the drive and temperature control unit of the control system are carried out respectively, including the stability test of driving current, the simulation experiment of driving unit, the temperature control ability experiment of temperature control unit and so on. Finally, a complete prototype of the laser pump source is made by selecting a pump module, and its laser output is tested and studied in detail, including the experiment of the relationship between the output power and the driving current. Experimental study of output optical power stability and measurement of laser spectrum. The experimental results show that the output current range of the drive unit of the laser pump control system is 0-1A. Under the condition of 0.6 A output current, the output current has the short-term stability of 1 hour of 508ppm and the long term stability of 8 hours of 1448ppm. The temperature control unit of the laser pump source control system has a maximum output power of 10 W. Then the parameters of the laser pump source prototype using the control system are measured. The output optical power of the laser pump prototype can reach 600mW and the center wavelength is 975.2nmg. the short-term optical power stability is 鹵0.008dBunder the output laser power of 150mW, and the long-term optical power stability is 鹵0.05dB at the output optical power of 400MW. The unique work of this paper includes: 1. According to the practical requirement of EDFA to laser pump source, the semiconductor driving technology and temperature control are assembled in one control system, which has strong practicability. 2. The circuit structure of the drive and temperature control unit of the laser pump source control system is designed reasonably. The control system has high driving stability and strong temperature control ability. 3. The practical requirement of laser pump module is considered synthetically. After simple adjustment, the same encapsulation structure can be controlled, and the pump module of different models has a certain universality. Compared with the similar products in the market, the laser pump source prototype with this control system has higher output laser stability and reaches the level of high-end products in the market. It is shown that the designed laser pump source control system has strong control ability. It is shown that the 600MW laser pump source control system designed in this paper can meet the design requirements and has certain practical value.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN929.11;TN722

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