DocumentCode :
1136148
Title :
A cost-effective fast frequency-hopped code-division multiple-access light source using self-seeded fabry-Pe´rot laser with fiber Bragg grating array
Author :
Peng, Wei-Ren ; Peng, Peng-Chun ; Lin, Wen-Piao ; Hsu, Kuei-Chu ; Lai, Yin-Chieh ; Chi, Sien
Author_Institution :
Inst. of Electro-Opt. Eng., Nat. Chiao-Tung Univ., Hsinchu, Taiwan
Volume :
16
Issue :
11
fYear :
2004
Firstpage :
2550
Lastpage :
2552
Abstract :
We propose a novel light source for the optical fast frequency-hopped code-division multiple-access scheme using a self-seeded gain-switched Fabry-Pe´rot 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.
Keywords :
Bragg gratings; code division multiple access; encoding; high-speed optical techniques; optical arrays; optical communication equipment; optical delay lines; semiconductor lasers; 1.425 GHz; 475 MHz; encoded chip rate; external cavity loop; fast frequency-hopped code-division multiple-access light source; fiber Bragg grating array; self-seeded Fabry-Perot laser; sidemode suppression ratio; spectral pulse encoding; temporal pulse encoding; variable fiber delay line; Bragg gratings; Diode lasers; Fiber gratings; Fiber lasers; Frequency; Light sources; Multiaccess communication; Optical arrays; Optical pulses; Semiconductor laser arrays;
fLanguage :
English
Journal_Title :
Photonics Technology Letters, IEEE
Publisher :
ieee
ISSN :
1041-1135
Type :
jour
DOI :
10.1109/LPT.2004.835615
Filename :
1344097
Link To Document :
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