Browsing by Author "Chi, SE"

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The application of optical phase conjugation in soliton communications
(1996)
Chi, SE
;
Wen, SF
;
Dung, JC
;
交大名義發表
;
光電工程學系
Recent theoretical works on the application of optical phase conjugation in the soliton communications are reviewed and the effect of the in-line filter on the optical phase conjugation is numerically studied. It is shown that, by properly applying the conjugators and choosing the filter bandwidth, the soliton transmission can be significantly improved and its performance is better than applying the sliding-frequency filter for the considered system of 14.3 Gbits/s bit rate.
Two-stage L-band EDFA applying C/L-Band wavelength-division multiplexer with the counterpropagating partial gain-clamping
(2003-12-01)
Lu, YH
;
Chi, SE
;
光電工程學系
;
Department of Photonics
A simple ring laser technique of two-stage gain-clamped long-wavelength band erbium-doped fiber amplifier is investigated. The ring laser light is excluded at the output end and noise-figure degradation can. be reduced due to the counterpropagating partial gain-clamping in the second stage. The laser mechanism is achieved by the C/L-band wavelength-division multiplexer instead of a tunable bandpass filter and an optical circulator at the output end, which,were often used in the previous counterpropagating ring laser architectures, and thus, this design is cost-effective. The gain-clamping of long-wavelength band (1569-1606.2 nm) in our configuration is demonstrated experimentally for the saturating tone (1587.6 nm) power up to -2 dBm.