Browsing by Author "Chiou, HY"

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Long-distance FBG sensor system using fiber ring laser with hybrid amplifier
(2005)
Peng, PC
;
Feng, KM
;
Peng, WR
;
Chiou, HY
;
Chang, CC
A fiber Bragg grating (FBG) sensor system using a fiber ring laser with a hybrid amplifier is proposed and demonstrated. The hybrid amplifier comprises an erbium doped waveguide amplifier and a semiconductor optical amplifier. The experiment shows that such the hybrid amplifier has a high amplifier spontaneous emission power and gain spectrum. Moreover, this fiber ring laser can provide a stable multiwavelength output with an optical signal-to-noise ratio over 50 dB even if the FBGs are located at a 25 kin remote sensing position.
Long-distance fiber grating sensor system using a fiber ring laser with EDWA and SOA
(2005-08-01)
Peng, PC
;
Feng, KM
;
Peng, WR
;
Chiou, HY
;
Chang, CC
This investigation presents and demonstrates the feasibility of a novel fiber Bragg grating (FBG) sensor system using a fiber ring laser with a hybrid amplifier. The hybrid amplifier comprises an erbium-doped waveguide amplifier (EDWA) and a semiconductor optical amplifier (SOA). Experimental results demonstrate that the hybrid amplifier has a higher amplifier spontaneous emission power and gain spectrum. Moreover, this novel fiber ring laser provides a stable multiwavelength output with an optical signal-to-noise ratio over 50 dB, even when FBGs are located at a 25 km remote sensing position. The primary feature of the proposed fiber laser is that it facilitates a long-distance or a large-scale sensor system. (C) 2005 Elsevier B.V. All rights reserved.
Multiwavelength fiber laser using S-band erbium-doped fiber amplifier and semiconductor optical amplifier
(2006-03-01)
Peng, PC
;
Feng, KM
;
Chang, CC
;
Chiou, HY
;
Chen, JH
A multiwavelength fiber ring laser that is based on an S-band erbium-doped fiber amplifier (EDFA) and a semiconductor optical amplifier (SOA) is developed. An optical switch is used to switch the multiwavelength fiber laser between S-band and L-band. This fiber laser can stably lase seven wavelengths in the S-band or 28 wavelengths in the L-band. Additionally, the lasing wavelengths with a signal-to-noise ratio of over 33 dB and a wavelength spacing of 100 GHz are demonstrated experimentally. The average powers of the lasing wavelength in the S-band and the L-band are -7.53 and -12.15 dBm, respectively. (c) 2005 Elsevier B.V. All rights reserved.
OCDMA light source using directly modulated Fabry-Perot laser diode in an external injection scheme
(2006-05-01)
Peng, PC
;
Peng, WR
;
Feng, KM
;
Chiou, HY
;
Chen, J
This investigation proposes and experimentally demonstrates an optical code-division multiple-access (OCDMA) light source using a directly modulated Fabry-Perot laser diode in an external injection scheme. This light source has an optical sidemode suppression ratio of over 27.5 dB and a pulsewidth of around 55 ps. Such a narrow pulsewidth has great potential for a two-dimensional OCDMA system. Additionally, the bit-error-rate performance with a 2(31) - 1 pseudorandom bit sequence indicates the feasibility of this light source in a 2.488-Gb/s system application.