Browsing by Author "Wang, Chia Hsuan"

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Cost-effective wavelength-tunable fiber laser using self-seeding Fabry-Perot laser diode
(2008-01-07)
Yeh, Chien Hung
;
Shih, Fu Yuan
;
Wang, Chia Hsuan
;
Chow, Chi Wai
;
Chi, Sien
We propose and experimentally demonstrate a continuous wave (CW) tunable-wavelength fiber laser using self-seeding Fabry-Perot laser diode (FP-LD) without optical amplifier inside gain cavity. By employing a tunable bandpass filter (TBF) and a fiber reflected mirror (FRM) within a gain cavity, the fiber laser can lase a single-longitudinal wavelength due to the self-seeding operation. The proposed tunable wavelength laser has a good performance of the output power (> -15 dBm) and optical side-mode suppression ratio (> 40 dB) in the wavelength tuning range of 1533.75 to 1560.95 nm. In addition, the output stabilities of the fiber laser are also investigated. (c) 2007 Optical Society of America.
Utilization of self-injection Fabry-Perot laser diode for long-reach WDM-PON
(2010-01-01)
Shih, Fu Yuan
;
Yeh, Chien Hung
;
Chow, Chi Wai
;
Wang, Chia Hsuan
;
Chi, Sien
In this investigation we propose and demonstrate a wavelength widely tunable laser source employing a self-injected Fabry-Perot laser diode (FP-LD) for long-reach wavelength-division-multiplexed passive optical network (WDM-PON). By using a tunable bandpass filter and an optical circulator inside the gain cavity, a stable and single-longitudinal-mode (SLM) laser output is achieved. Besides, the proposed laser sources are directly modulated at 2.5 Gb/s for both downlink and uplink transmissions of 85 km single mode fiber (SMF) in PON without dispersion compensation. (c) 2009 Elsevier Inc. All rights reserved.