以半導體光放大器為基礎的多波長光纖環型雷射之研究

Study on Multiwavelength Fiber Ring Lasers based on a Semiconductor Optical Amplifier

鄒安莉(An-Li Tsou)

指導教授 ： 余合興 ； 彭朋群

國立臺北科技大學/電資學院/電機工程系研究所/碩士(2011年)

摘要

在本論文中，提出一個以半導體光放大器(SOA)建立的多波長光纖環型雷射架構。藉由通過兩次延遲干涉儀(DI)的環型架構，由放大自發增益光譜衍生的多波長光源之線寬變得更窄，提高了各波長光源的訊號雜訊比。實驗結果顯示，本研究提出的多波長光纖雷射，在5 dB(16.34 nm)的頻寬內，從1574.91 nm至1591.25 nm波長範圍共可激發184個雷射波峯，各波峯的平均間距為0.09 nm，訊號雜訊比超過24 dB。
我們針對這184個激發波長做了功率穩定度的調查。歷時40分鐘的六次掃描結果顯示，光功率變動介於0.5 dB到1dB之間，在波長在1587.2 nm到1591.25 nm區間有更穩定的多波長輸出，光功率變動皆小於0.5 dB。
此外，我們也對於各激發波長的微幅(≤0.01 nm)飄移進行深入的分析與討論。

關鍵字

多波長光纖雷射 ； 半導體光放大器 ； 延遲干涉儀

並列摘要

In this paper, we report the multiwavelength fiber ring lasers based on a semiconductor optical amplifier (SOA). The linewidth of the lasing peak was reduced by using a double-pass delay interferometer in the ring laser system setup. The experimental results showed that we produced a good performance multiwavelength fiber ring laser with ultra-narrow wavelength spacing. For the wavelength from 1574.91 nm to 1591.25 nm, the ring laser produced 184 lasing peaks within the 5 dB bandwidth of 16.34 nm. The spacing of adjacent lasing peaks is 0.083 nm, with relatively higher signal to noise ratio over 24 dB.
The optical power stability were investigated in detail at each of lasing wavelengths. The scanning results, taking six times in 40 minutes, show the optical power variation is mostly lower than 1 dB. Specifically, for the range from 1587.2 nm to 1591.25 nm the power fluctuation is negligibly smaller than 0.5 dB at 41 successive lasing peaks.
In addition, the slight drifts at some lasing wavelengths were also analyzed and discussed in this work.

並列關鍵字

Multiwavelength fiber ring lasers ； Semiconductor optical amplifier ； Delay interferometer

參考文獻

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