Browsing by Author "Chen, Yung-Jui"

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22-channel capacity of 2.5Gbit/s DWDM-PON ONU transmitter by direct-modularly side-mode injection locked FPLD
(2007-01-01)
Liao, Yu-Sheng
;
Chen, Yung-Jui
;
Lin, Gong-Ru
;
光電工程學系
;
Department of Photonics
22-channel detuning capacity of a 2.5Gbit/s directly modulated FPLD based ONU under side-mode injection-locking for DWDM-PON is demonstrated with SMSR >35dB, Q-factor 6.8-9.2, locking range of 24nm, power penalty of -0.7dB, and BER of 10(-10) at -17dBm. The demonstrated side-mode injection-locked FPLD is a potential candidate to achieve the cost effective and high capability 2.5Gbit/s DWDM-PON systems. The maximum usable ONU channels of the side-mode injection-locking FPLD are 22, corresponding to a wavelength locking range of 24 nm. Direct modulation of the upstream channels was successfully obtained and shows high quality eye diagram at ONU transmission.
22-channel capacity of 2.5Gbit/s DWDM-PON ONU transmitter by direct-modularly side-mode injection locked FPLD - art. no. 67832L
(2007)
Liao, Yu-Sheng
;
Chen, Yung-Jui
;
Lin, Gong-Ru
;
光電工程學系
;
Department of Photonics
22-channel detuning capacity of a 2.5Gbit/s directly modulated FPLD based ONU under side-mode injection-locking for DWDM-PON is demonstrated with SMSR >35dB, Q-factor 6.8-9.2, locking range of 24nm, power penalty of -0.7dB, and BER of 10(-10) at -17dBm. The demonstrated side-mode injection-locked FPLD is a potential candidate to achieve the cost effective and high capability 2.5Gbit/s DWDM-PON systems. The maximum usable ONU channels of the side-mode injection-locking FPLD are 22, corresponding to a wavelength locking range of 24 nm. Direct modulation of the upstream channels was successfully obtained and shows high quality eye diagram at ONU transmission.
A Novel Anti-Reflecton Coated FP Laser Amplifier for 2.5Gbit/s DWDM-PON Transmission
(2007)
Liao, Yu-Sheng
;
Chen, Yung-Jui
;
Huang, Yin-Hsun
;
Wang, Hai-Lin
;
Ko, Sun-Chien
A novel anti-reflection coated Fabry-Perot laser amplifier under side-mode injection-locking for 2.5Gbit/s DWDM-PON is demonstrated with SMSR >35dB, Q-factor 9.2, locking range of 30nm, power penalty of -0.7dB, and BER of 10(-12) at -23.7dBm. (c) 2007 Optical Society of America
An 8 mu W 100kS/s Successive Approximation ADC for Biomedical Applications
(2009)
Chen, Yung-Jui
;
Tang, Kea-Tiong
;
Fang, Wai-Chi
;
電子工程學系及電子研究所
;
Department of Electronics Engineering and Institute of Electronics
A successive approximation analog-to-digital converter (SA-ADC) for biomedical application is presented. It is based on 0.18-mu m standard CMOS technology and operates at low supply voltage at 1V. Boosted switch for sample-and-hold stage, split capacitor array for DAC, and clocked rail-to-rail comparator are used to achieve low-power consumption. The ADC has signal-to-noise-and-distortion ratio of 53dB for supply voltage of 1V, at sampling rate of 100kS/s and power consumption of 8 mu W.
LED-based Visible Light Communication in a Practical Indoor Interfered Environment Employing DMT and STBC
(2014-01-01)
Wei, Chia-Chien
;
Wu, Fang-Ming
;
Chen, Zhen-Yu
;
Lin, Chun-Ting
;
Chen, Yung-Jui
We demonstrate practical indoor VLC of 3.2-m transmission, and investigate multipath interference between LEDs. Employing repetition coding, 161 similar to 266-Mbps DMT-signals are achieved depending on interference severity. Employing STBC, about fixed 220-Mbps data rate could be achieved.
Long-Cavity Fabry-Perot Laser Amplifier Transmitter With Enhanced Injection-Locking Bandwidth for WDM-PON Application
(2010-10-15)
Lin, Gong-Ru
;
Liao, Yu-Sheng
;
Chi, Yu-Chieh
;
Kuo, Hao-Chung
;
Lin, Gong-Cheng
We simulate the injection-locking performance of a 1% antireflection coated Fabry-Perot laser amplifier (AR-FPLA) and demonstrate the 2.5-Gbit/s DWDM-PON application with the directly modulated AR-FPLA based ONU transmitter under side-mode injection-locking condition. The effect of the AR-FPLA front-facet reflectivity on the injection locking range detuning and the Q-factor are interpreted from theoretical simulations and are experimentally characterized. A 25-channel locking capacity is reported for such a side-mode injection-locked AR-FPLA with corresponding wavelength locking range of 30 nm, the minimal requested power of -7 dBm and gain extinction ratio of < 7 dB by reducing its front-facet reflectivity to 1%. At bit rate of 2.5 Gbit/s, the BER of 10(-12) is achievable for the nearest 17 channels of AR-FPLA at receiving power of -21 dBm, and all of the 25 injection-locked channels with SMSR of > 35 dB can guarantee the BER of < 10(-9) with their worst receiving sensitivity degrading to -19 dBm.
Side-mode transmission diagnosis of a multichannel selectable injection-locked Fabry-Perot Laser Diode with anti-reflection coated front facet
(2009-03-16)
Liao, Yu-Sheng
;
Kuo, Hao-Chung
;
Chen, Yung-Jui
;
Lin, Gong-Ru
;
光電工程學系
Theory and experiments on the side-mode-suppression-ratio (SMSR) enhancement and the linewidth reduction of a Fabry-Perot laser diode (FPLD) side-mode-injection-locked by using another FPLD are demonstrated to realize its potential application as a DWDM transmitter source. The SMSR, the spectral linewidth and the linewidth enhancement factor are simulated to realize the limitation of the FPLD-FPLD link under side-mode injection-locking condition. A degradation of the linewidth enhancement factor from 1.5 to 2.1 is observed due to the slave FPLD injection-locked at principle- and side-mode conditions. Up to 22-channel selectability of the 2.5 Gbit/s directly modulated FPLD based transmitter under side-mode injection-locking is demonstrated with a SMSR >35 dB, a Q-factor 6.8-9.2, a locking range of 24 nm, a power penalty of -0.7 dB, and a BER of 10(-10) at -17 dBm. The side-mode injection-locked FPLD shows high-quality transmission performance and meet the demand for cost-effective and high-capability 2.5 Gbit/s WDM systems. (C) 2008 Optical Society of America