<link rel="stylesheet" href="styles.cf390c6bfbe7555f.css">

學術出版;;Publications

Permanent URI for this communityhdl:11536/1

收集所有交通大學研究人員與學生個人或團體所發表之各項學術著作，涵蓋期刊論文、教師專書、學位論文等項。;;Collections of Publications of NCTU Researchers and Students Like Journal Papers and Thesis.

Browse

Filters

1997 - 199912000 - 2009252010 - 202011

Settings

🏛️國立陽明交通大學機構典藏

Subject: search.filters.subject.fiber laser

Search Results

Now showing 1 - 10 of 37
  • Thumbnail Image
    Item type:Item,
    Utilizing self-injection Rayleigh backscattering feedback for channel-selected erbium laser with single-longitudinal-mode output
    (2020-07-01)
    Yeh, Chien-Hung
    ;
    You, Wei-Yao
    ;
    Chen, Jhao-Ren
    ;
    Chow, Chi-Wai
    ;
    Lin, Wen-Piao
    To achieve the target of single-longitudinal-mode (SLM) operation in erbium-doped fiber (EDF) laser, a self-injected Rayleigh backscattering (RBS) feedback schematic is proposed and demonstrated experimentally. Based on the proposed RBS effect, the multi-longitudinal-mode (MLM) noises of the RBS EDF laser can be suppressed fully. Here, the output powers of -7.5 to -5.1 dBm are detected over the tuning bandwidth of 1523.0 to 1563.0 nm. Moreover, the optical signal to noise ratios (OSNRs) of 30.9 and 33.1 dB is also attained. In this study, the SLM oscillation and output instability of the EDF laser are also analyzed and discussed.
  • Thumbnail Image
    Item type:Item,
    62nm CW wavelength-selectable erbium-doped fiber compound-ring laser with stable single-mode output
    (2019-12-01)
    Yeh, Chien-Hung
    ;
    Chang, Yao-Jen
    ;
    Lin, Wen-Piao
    ;
    Xie, Yue-Ru
    ;
    Luo, Chien-Ming
    In this demonstration, an erbium-doped fiber (EDF) based laser with stable, wide and wavelength-selectable single-longitudinal-mode (SLM) performances is designed and demonstrated. Here, to achieve SLM oscillation, a compound-ring scheme is constructed in the EDF laser cavity serving as a mode-restriction-filter for densely side-mode suppression. Moreover, the continuous-wave tunability can be scaled from 1520.0 to 1582.0 nm by using the proposed compound-ring scheme and commercial C-band EDF amplifier. In the measurement, the output stability and 3 dB Lorentzian linewidth of each lasing wavelength in the proposed EDF compound-ring laser have also been discussed.
  • Thumbnail Image
    Item type:Item,
    Reliability of stable fiber Bragg grating sensor system for monitoring temperature and strain individually
    (2019-10-01)
    Chang, Yao-Jen
    ;
    Yeh, Chien-Hung
    ;
    Chow, Chi-Wai
    ;
    光電工程學系
    ;
    光電工程研究所
    In the investigation, the fiber Bragg grating-based sensor system is proposed and demonstrated to monitor temperature and strain individually. In order to obtain a stable and accurate sensing signal, an erbium-doped fiber (EDF) ring laser scheme with a 2 m long unpumped EDF as the saturable absorber is also proposed. Hence, the observed stabilization of output power and sensing wavelength can be less than 0.1 dB and 0.02 nm, and 0.3 dB and 0.02 nm in the sensor system, respectively, in the back-to-back state and 25 km fiber link. Hence, this sensor system can improve the output stability of the sensing signal. In addition, the temperature- and strain-induced wavelength shifts can be operated in the range of 20 degrees C-70 degrees C and 0-37 500 mu epsilon, respectively.
  • Thumbnail Image
    Item type:Item,
    Coupling-ratio controlled wavelength tunability of a power conversion efficiency improved L-band Erbium-doped fiber laser
    (2006-01-01)
    Lin, Gong-Ru
    ;
    Chang, Jun-Yuan
    ;
    Liao, Yu-Sheng
    ;
    Lu, Hai-Han
    ;
    光電工程學系
    A coupling-ratio controlled wavelength tunable L-band erbium-doped fiber laser with tuning range of 45nm (1567 1612 nm), quantum efficiency of 42%, power conversion efficiency of 37%, tuning resolution of 0.3 mn is reported. The wavelength-tuning is achieved by a tunable band-pass filter (TBPF) or by adjusting the tunable-ratio optical coupler (TROC) without TBPF because of the difference of intracavity loss. The output wavelength can be tunable in the full L-band with TBPF, from 1567 to 1612 nm, and the pulse-width is < 14.2 ps. Specially, during the wavelength-tunable process without TBPF, the modulation frequency of about 1 GHz remains unchanged and near-transform-limited pulses are generated by linear compression with 32.5 in single mode fiber (SMF) under 10% output coupling ratio.
  • Thumbnail Image
    Item type:Item,
    Widely wavelength-tunable pulse generation from an actively mode-locked fiber laser with a Fabry-Perot laser diode
    (2006-01-01)
    Peng, PC
    ;
    Lin, JH
    ;
    Chi, S
    ;
    光電工程學系
    ;
    Department of Photonics
    An actively mode-locked fiber ring laser for generating wavelength-tunable optical pulses is demonstrated. An Er-Yb doped waveguide amplifier is used as an optical amplifier, and a Fabry-Perot laser diode is used as a modulator in the fiber laser. Moreover, we add a variable optical delay line to control the cavity length for maintaining a constant repetition frequency and pulsewidth at different wavelengths. The optical side-mode-suppression-ratio is better than 33.5 dB over the wavelength-tunable range of 46 nm.
  • Thumbnail Image
    Item type:Item,
    Silicon-Micro-Ring Resonator-Based Erbium Fiber Laser With Single-Longitudinal-Mode Oscillation
    (2018-06-01)
    Yeh, Chien-Hung
    ;
    Cheng, Hao-Yun
    ;
    Chang, Yuan-Chia
    ;
    Chow, Chi-Wai
    ;
    Chen, Jing-Heng
    In this paper, we propose and experimentally illustrate a wavelength-switchable erbium-doped fiber (EDF) dual-ring (DR) laser with stable single-longitudinal-mode (SLM) oscillation. In the experiment, a silicon-micro-ring-resonator (SiMRR) is applied in the proposed DR cavity for tuning different output wavelengths, when the birefringence loss is adjusted correctly. To compress the densely multilongitudinal-mode oscillations, the DR scheme together with a 2-m unpumped EDF-based saturable absorber is acted as the mode filter. The DR also can produce self-injection loop for an SLM operation. The wavelength tunability is between 1532.61 to 1557.98 nm and the measured 3-dB output linewidth is similar to 22.5 kHz. Moreover, the output stabilizations of the proposed SiMRR-based EDF DR laser are also analyzed and discussed.
  • Thumbnail Image
    Item type:Item,
    Compact 84 GHz passive mode-locked fiber laser using dual-fiber coupled fused-quartz microresonator
    (2017-10-01)
    Liu, Tze-An
    ;
    Hsu, Yung
    ;
    Chow, Chi-Wai
    ;
    Chuang, Yi-Chen
    ;
    Ting, Wei-Jo
    We propose and demonstrate a compact and portable-size 84-GHz passive mode-locked fiber laser, in which a dual-fiber coupled fused-quartz microresonator is employed as the intracavity optical comb filter as well as the optical nonlinear material for optical frequency comb generation. About eight coherent optical tones can be generated in the proposed fiber laser. The 20-dB bandwidth is larger than 588 GHz. The full-width halfmaximum pulse-width of the proposed laser is 2.5 ps. We also demonstrate the feasibility of using the proposed passive mode-locked fiber laser to carry a 5-Gbit/s on-off-keying signal and transmit over 20-km standard single mode fiber. A 7% forward error correction requirement can be achieved, showing the proposed fiber laser can be a potential candidate for fiber-wireless applications. (C) 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
  • Thumbnail Image
    Item type:Item,
    L band Tunable Fiber Laser Based on Mirror Reflector and Tunable Fiber Gratings
    (2009)
    Liaw, S. -K.
    ;
    Seung, O.
    ;
    Lai, C. -L.
    ;
    Yu, Y. -L.
    ;
    Hsu, K. -C.
    An L band tunable fiber laser based on tunable FBGs and a broadband fiber mirror is demonstrated. A lasing output power at 1582.0 nm has side-mode-suppression-ratio and pumping efficiency of 55 dB and 12.2%, respectively
  • Thumbnail Image
    Item type:Item,
    中紅外脈衝光源與奈米材料之非線性研究
    (2015)
    謝文峰
    ;
    HSIEH WEN-FENG
    ;
    國立交通大學光電工程學系（所）
    高功率、短脈衝、2 m波段之中紅外摻銩光纖雷射有許多應用，例如分子光譜、生 物醫學診斷、遙測及非線性光學等。而高功率中紅外超連續光譜亦可應用於仿黑體輻 射、化學感測、光學同調斷層掃描、與光學組織剝除等。因此，摻銩光纖雷射和相關的 光源產生技術是很重要且值得研究發展的。傳統上用在光纖雷射中的被動鎖模機制是半 導體飽和吸收反射鏡或非線性偏振演化。然而，可用於中紅外波長的半導體飽和吸收反 射鏡很少，不易取得，而採用非線性偏振演化架構的共振腔則較不穩定。石墨烯具有很 快的載子回復時間及很大的飽和吸收、超寬的飽和吸收範圍(從可見光至兆赫波範圍)， 且容易製備，因此廣泛被應用在雷射的被動鎖模上。氧化石墨烯則是石墨烯片的前驅 物，比石墨烯更容易製作，且亦擁有很快的熱載子回復時間及很大的飽和吸收，因而在 雷射鎖模應用上具有潛力。但是石墨烯與氧化石墨烯應用於摻銩光纖雷射鎖模上的研究 仍很少見；而這兩種奈米材料的色散和2 m波段的非線性光學係數資料亦很缺乏。因 此，相關的研究深具學術和應用價值。 一個封閉的迴路中串接重新整形及重新放大的組件後，將可形成自脈動光源，它提 供了一種產生超短脈衝的方法。自脈動光源有下列幾種特性：非週期性、幾乎和偏振無 關、帶寬大、以及脈衝平均重複率很容易調整等。若在自脈動光源中加入石墨烯或氧化 石墨烯飽和吸收體，將可觀察光源是否會在連續波、自脈動、鎖模、以及混沌等四種操 作狀態之間演化，進而研究其非線性動力學行為。自脈動光源提供了一些獨特的應用， 但是目前只有在1.55 m波長被研究，而在2 m的波長也是極具開發價值。 本研究團隊已具有超快光纖雷射研究、超連續光譜產生、石墨烯及氧化石墨烯飽和 吸收體製備以及奈米材料量測技術等經驗，在本三年計畫中，我們將從事下列五個研究 課題：一、利用不同層數的石墨稀獲得鎖模雷射脈衝，並且計算石墨稀之色散及對雷射 鎖模的機制；二、利用石墨烯及氧化石墨烯來產生穩定自啟動之短脈衝摻銩全光纖雷 射；三、架設一級放大系統並且使用Z軸掃描技術量測石墨烯與氧化石墨烯之非線性光 學特性；四、建立以石墨烯或氧化石墨烯為基礎之狀態可調2 m自脈動光源；五、建立 短脈衝摻銩全光纖之主振式功率放大器系統，並且利用此雷射注入非線性光纖中產生中 紅外線之超連續光譜。
  • Thumbnail Image
    Item type:Item,
    超快時間解析光譜於氧化鋅結構物之研究
    (2011)
    謝文峰
    ;
    HSIEH WEN-FENG
    ;
    國立交通大學光電工程學系（所）
    氧化鋅屬於寬能隙(約3.37eV)的半導體材料。由於其室溫下具有很大的激子束縛能，約60 meV，使得激子在室溫下具顯著的發光效率。氧化鋅奈米結構已經被應用在發光元件、生醫感測及太陽能電池等領域。另外，微小共振腔中的ZnO奈米結構，可以成為實現室溫 polariton 波思—愛恩斯坦凝聚的最佳選擇。且ZnO具很高的電子遷移率，可成為TiO2以外作為染敏太陽能電池的極佳選擇。因此，研究氧化鋅的載子動力學對太陽能電池和二極體的開發，有關鍵性之影響。 近年來，本研究團隊成功成長 ZnO 薄膜、奈米結構(線、粒與量子點)及氧化鎂鋅量子阱。除了光激發螢光光譜，線性光譜特性，還以 Z-scan 技術量測非線性光學，以及用 pump-probe 探測瞬態吸收行為。在本三年計劃中，我們預計購買脈衝選擇器、光隔離器、自相關干涉儀、高頻鎖相放大器、電控式位移平台、三配頻套件。基於以上經驗從事下列三個研究課題： 一、利用Z軸掃描技術研究氧化鋅的非線性特性；二、利用超寬連續光譜激發-探測技術研究氧化鋅之瞬態吸收光譜；三、利用飛秒時間解析螢光光譜研究氧化鋅奈米結構物。