Title :
Theoretical analysis of high-repetition rate optical-pulse multiplication using fiber-coupler loop configuration
Author :
Chan, Chun-Kit ; Chen, Lian-Kuan
Author_Institution :
Dept. of Inf. Eng., Chinese Univ. of Hong Kong, Shatin, Hong Kong
Abstract :
A new approach to generate ultrahigh-repetition rate optical pulses is proposed and analyzed theoretically. It is different from conventional approaches, which use fiber or integrated waveguide delay line circuits. The high-repetition-rate optical-pulse multiplication phenomenon occurs when the optical pulse´s spectral width is greater than the transfer bandwidth of the coupler used. From the analysis, pulse doubling at repetition rates beyond the hundred-GHz range can be achieved using an all-fiber low-loss wavelength-division coupler with a looped end. The output repetition rate can be controlled by using fiber couplers with different equivalent transfer bandwidths.<>
Keywords :
high-speed optical techniques; optical fibre couplers; time division multiplexing; all-fiber low-loss wavelength-division coupler; fiber-coupler loop configuration; multiple cascaded coupler loop; optical pulse spectral width; optical-pulse multiplication; output repetition rate control; pulse doubling; transfer bandwidth; ultrahigh speed TDM; ultrahigh-repetition rate optical pulse generation; Bandwidth; Coupling circuits; Delay lines; Optical coupling; Optical fiber couplers; Optical pulse generation; Optical pulses; Optical waveguide theory; Optical waveguides; Space vector pulse width modulation;
Journal_Title :
Photonics Technology Letters, IEEE
