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

🏛️國立陽明交通大學機構典藏

Search Results

Now showing 1 - 10 of 21

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.
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.
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.
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.
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.
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.
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.
Power-equalized parallel-type pump-shared fiber lasers based on parameter-adjustment
(1999-11-01)
Tseng, HY
;
Liaw, SK
;
Chi, S
;
光電工程學系
;
Department of Photonics
A parallel-type, pump-shared (PTPS) scheme linear-cavity laser array (LCLA) is proposed and numerically studied. Power-equalization of multiwavelength fiber lasers can be achieved by varying the pumping power ratio, length of the erbium-doped fiber or reflectivity of grating reflector for the individual channels. Before and after power-equalization, the maximum power variation among seven equal-spaced channels, ranging from 1530 to 1560 nm, is 5.8 and 0.2 dB, respectively. (C) 1999 Elsevier Science B.V. All rights reserved.
Fiber-grating-based optical limiting amplifier module for dual-wavelength, hybrid data rate transmission
(2000)
Liaw, SK
;
Chi, S
;
Tseng, HY
;
光電工程學系
;
Department of Photonics
A multichannel fiber-grating-based optical limiting amplifier module is proposed Dual-wavelength, hybrid data rate transmission is demonstrated with 30 dB input dynamic range. For 5.0 and 25 Gbit/s dual-channel transmission in a 200 km single-mode fiber, power penalty due to gain competition between channels and backreflection noise is less than 0.6 dB compared to the receiver sensitivity of 0 km, 5.0 Gbit/s single-channel operation.
Parallel pump-shared linear cavity laser array using 980-nm pump reflectors or N pieces of gain fibers as self-equalizers
(2000-01-01)
Liaw, SK
;
Tseng, HY
;
Chi, S
;
光電工程學系
;
Department of Photonics
By using fiber gratings as pump reflectors with various reflectivities or N pieces of gain fibers with various lengths externally to linear cavity as self-equalizers, a parallel-type, pump-shared linear cavity laser array (LCLA) is proposed and numerically studied, The average output power is increased and the maximum power variation among channels is reduced from 7.2 to less than 0.1 dB when the reflectivity of each pump reflector or the length of each gain fiber is adjusted appropriately.

學術出版;;Publications

Browse

Filters

Settings

Sort By

Results per page

🏛️國立陽明交通大學機構典藏

Search Results