<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

1998 - 1999102000 - 2009162010 - 20182

Settings

🏛️國立陽明交通大學機構典藏

Subject: search.filters.subject.fiber Bragg grating

Search Results

Now showing 1 - 10 of 28
  • Thumbnail Image
    Item type:Item,
    In-fiber Long-period Grating and Fiber Bragg Grating-based Sensor for Simultaneously Monitoring Remote Temperature and Stress
    (2018-01-01)
    Chang, Hung-Ying
    ;
    Yeh, Chien-Hung
    ;
    Huang, Chuan-Ying
    ;
    Fu, Ming-Yue
    ;
    Chow, Chi-Wai
    In this study, we experimentally demonstrated that a high-sensitivity fiber sensor can be used for the remote sensing of temperature and stress simultaneously. The proposed sensor includes several sensing heads, each of which is composed of a long-period grating (LPG) and a fiber Bragg grating (FBG). Moreover, the optical characteristics of both the FBG and LPG are different. On the basis of these different optical features and the sensing transfer matrix, temperature and stress can both be remotely measured simultaneously. The temperature sensitivities of the grating-wavelength shift and grating-reflection intensity are about 0.0082 nm/degrees C and 0.044 dBm/degrees C, respectively. The strain sensitivities of the grating wavelength shift and grating-reflection intensity are respectively around 0.0133 nm/g and 0.0089 dBm/g. Therefore, the fiber sensor can provide a simple method with excellent sensitivity for applications of structure-security monitoring and industrial engineering measurements.
  • 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,
    Experimental investigation of a fiber Bragg grating integrated optical limiting amplifier with high dynamic range
    (1998-07-01)
    Liaw, SK
    ;
    Chi, S
    ;
    光電工程學系
    ;
    Department of Photonics
    By inserting a bidirectional erbium-doped fiber amplifier (EDFA) in between an optical circulator and a fiber Bragg grating (FBG), we realize an FBG-integrated optical limiting amplifier (OLA) with high dynamic range. The dual-pass OLA has a wide dynamic range of over 40 dB and a saturation signal output power of about 13.0 dBm. The performance of dual-pass OLA has no obvious degradation due to back reflection of the amplified signal. A negligible power penalty of about 0.3 dB is observed when compared with other conventional configurations. The FBG-integrated OLA configuration has potential application in wavelength division multiplexing (WDM) systems where high saturated power is needed for multichannel transmission. (C) 1998 Society of Photo-Optical Instrumentation Engineers.
  • Thumbnail Image
    Item type:Item,
    Fiber Bragg grating-based large nonblocking multiwavelength cross-connects
    (1998-10-01)
    Chen, YK
    ;
    Lee, CC
    ;
    光電工程學系
    ;
    Department of Photonics
    Multiwavelength cross-connects (WXC's) will play a key role to provide more reconfiguration flexibility and network survivability in wavelength division multiplexing (WDM) transport networks. In this paper, we utilize three different fiber Bragg grating (FBG)-based P-type, S-type, and N-type building blocks with optical circulators and related control devices for constructing large rearrangeably nonblocking N x,N WXC's, The P-type building block is composed of certain "parallel" FBG-element chains placed between the control devices of two large mechanical optical switches (OSW's), The S-type building block consists of a "series" of FBG elements and the control device of 2 x 2 OSW's, The nonswitched N-type building block includes a "series" of FBG elements with appropriate stepping motor or PZT control devices. All FBG elements, each with central wavelength corresponding to equally or unequally spaced WDM channel wavelengths, with high-reflectivity are required. Large N x N WXC structures, with minimum number of required constitutive elements, based on a three-stage Clos network are then constructed. We investigate their relevant characteristics, compare the required constitutive elements, and estimate the dimension limits for these WXC architectures. Other related issues such as capacity expansion, wavelength channel spacing, and multiwavelength amplification are also addressed.
  • Thumbnail Image
    Item type:Item,
    Power equalized wavelength-selective fiber lasers using fiber Bragg gratings
    (1998-10-15)
    Liaw, SK
    ;
    Lee, CC
    ;
    Ho, KP
    ;
    Chi, S
    ;
    光電工程學系
    A fiber Bragg grating (FBG) based multi-wavelength ring laser is experimentally investigated in this paper. The lasing wavelengths can be dynamically selected by using a 1 x N optical switch. Micro-bender between FBGs is used as variable attenuator to equalize the output power for each lasing wavelength. By using passive multi-ring cavities (MRC) method, single- or dual-wavelength laser of equal output power is demonstrated for a signal-to-noise ratio (SNR) of 63 dB and a narrow linewidth of 3 kHz. (C) 1998 Elsevier Science B.V. All rights reserved.
  • Thumbnail Image
    Item type:Item,
    WDM soliton transmission system using dispersion slope compensators
    (1999-01-01)
    Lin, SC
    ;
    Chi, S
    ;
    Dung, JC
    ;
    光電工程學系
    ;
    Department of Photonics
    A new scheme of dispersion slope compensator by writing Bragg gratings at different positions in a dispersion compensation fiber is proposed for the wavelength division multiplexing soliton transmission system. This scheme can compensate in-line for the accumulated dispersion of;each channel and suppress the dispersive waves which are caused by the incomplete filtering of the signals of the neighboring channels by using Fabry-Perot or Butterworth filters and the different propagating paths of the signals of the different channels in the dispersion slope compensator.
  • Thumbnail Image
    Item type:Item,
    Gain-flattened optical limiting amplifier modules for wavelength division multiplexing transmission
    (1999)
    Liaw, SK
    ;
    Chi, S
    ;
    光電工程學系
    ;
    Department of Photonics
    By integration of a bidirectional erbium-doped fiber amplifier and a three-port optical circulator with several fiber Bragg gratings (FBGs), two gain-flattened optical limiting amplifier (OLA) modules are proposed and experimentally demonstrated. They rely on the use of central wavelength misalignment and bending loss methods, respectively. They cart effectively cover the whole useful 1.55-mu m band. Both modules can provide gain-flattening characteristics over a large input dynamic range. The FBGs-integrated OLA configuration has potential application in wavelength division multiplexing lightwave communication systems.
  • Thumbnail Image
    Item type:Item,
    Proposed power-equalized EDFA modules using fiber Bragg gratings with various reflectivities
    (1999)
    Liaw, SK
    ;
    Ho, KP
    ;
    Hsu, KY
    ;
    Chi, S
    ;
    光電工程學系
    We proposed and experimentally demonstrated two power equalized erbium-doped fiber amplifier (EDFA) modules using fiber Bragg gratings (FBGs) with various reflectivities for individual channels. The transmission type power-equalized EDFA module is low-cost for its simple design, while the reflection type power-equalized EDFA module can suppress most of the amplified spontaneous emission noise. Both consist of a bidirectional EDFA, a set of FBG chains with suitable reflectivities, and an optical isolator / optical circulator They can find potential applications in wavelength division multiplexing lightwave transmission systems.
  • Thumbnail Image
    Item type:Item,
    High-dynamic-range optical cross-connect device using fiber Bragg gratings
    (1999-08-01)
    Liaw, SK
    ;
    Ho, KP
    ;
    Chen, LK
    ;
    Tong, F
    ;
    Chi, S
    Using in optical networks; a reconfigurable and low-cost 2 x 2 optical cross-connect device based on fiber Bragg gratings and optical limiting amplifiers is investigated and demonstrated. The input dynamic range is over 20 dB for both crossing and passing channels. Small power penalty of 0.6-1.0 dB is found for a two-channel 2.5 Gb/s over a 100-km system demonstration.
  • Thumbnail Image
    Item type:Item,
    Experimental investigation of wavelength-tunable WADM and OXC devices using strain-tunable fiber Bragg gratings
    (1999-10-01)
    Liaw, SK
    ;
    Ho, KP
    ;
    Lin, CL
    ;
    Chi, S
    ;
    光電工程學系
    Two reconfigurable wavelength add/drop multiplexer (WADM) and optical cross-connect (OXC) devices based on strain-tunable fiber Bragg gratings (ST-FBGs) are proposed. The feasibility of WADM is verified by measuring the bit-error-rate performance of the dropped (cross-connect) and pass-through (no cross-connect) channels over a 50- and 100-km standard single-mode fiber for a 2.5 Gb/s system. Compared to back-to-back transmission, a negligible power penalty of only 0.2 dB is observed. (C) 1999 Published by Elsevier Science B.V. All rights reserved.