標題: A cost-effective fast frequency-hopped code-division multiple-access light source using self-seeded Fabry-Perot laser with fiber Bragg grating array
作者: Peng, WR
Peng, PC
Lin, WP
Hsu, KC
Lai, YC
Chi, S
光電工程學系
Department of Photonics
關鍵字: Fiber Bragg grating (FBG);optical fast frequency-hopped code-division multiple-access (OFFH-CDMA);self-seeded Fabry-Perot laser diode (FP-LD)
公開日期: 1-Nov-2004
摘要: We propose a novel light source for the optical fast frequency-hopped code-division multiple-access scheme using a self-seeded gain-switched Fabry-Perot laser diode (FP-LD) with the reconfigurable fiber Bragg grating array (FBGA). The embedded FBGA in the external cavity loop encodes the input pulses both temporally and spectrally. Before feeding back into the FP-LD, the encoded optical pulses propagate the FBGA with reverse direction and are again temporally combined. With the corporation of the variable fiber delay line, the limitation of the pulse rate by the fixed external cavity length is removed and makes the scheme more flexible. The output with sidemode suppression ratio of more than 20 dB has been obtained. With three fiber Bragg gratings on the FBGA, we demonstrate the encoded chip rate of 1.425 GHz under the driving radio frequency of 475 MHz. It is proved that a different codeword can be generated by simply reconfiguring the encoder without changing the rest of the experimental setup.
URI: http://dx.doi.org/10.1109/LPT.2004.835615
http://hdl.handle.net/11536/25711
ISSN: 1041-1135
DOI: 10.1109/LPT.2004.835615
期刊: IEEE PHOTONICS TECHNOLOGY LETTERS
Volume: 16
Issue: 11
起始頁: 2550
結束頁: 2552
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