Title :
EAM-integrated DFB laser modules with more than 40-GHz bandwidth
Author :
Kawanishi, Hidekazu ; Yamauchi, Yoshinori ; Mineo, Naoyuki ; Shibuya, Yoshiki ; Mural, H. ; Yamada, Koji ; Wada, Hiroshi
Author_Institution :
Components Div., Oki Electr. Ind. Co. Ltd., Tokyo, Japan
Abstract :
Electroabsorption modulator (EAM)-distributed feedback (DFB) modules with record-high bandwidth of 41 GHz have been developed. 40-Gb/s nonreturn to zero (NRZ) operation with 12-dB extinction ratio and -1.6-dBm average output power have been successfully achieved by optimizing the EAM length and detuning. A clearly opened eye diagram was maintained even after 80-km nonzero dispersion shifted fiber (NZ-DSF) transmission with dispersion compensation, 40-GHz short pulse trains with 6-ps pulsewidth have been also generated by sinusoidal electrical modulation.
Keywords :
distributed feedback lasers; electro-optical modulation; electroabsorption; integrated optics; laser beams; laser feedback; optical fibre communication; optical fibre dispersion; optical pulse generation; optical transmitters; quantum well lasers; 40 GHz; 40 Gbit/s; 6 ps; 80 km; DFB laser modules; average output power; clearly opened eye diagram; detuning; dispersion compensation; electroabsorption modulation length; electroabsorption modulator-distributed feedback modules; extinction ratio; nonreturn to zero operation; nonzero dispersion shifted fiber transmission; optimization; pulsewidth; record-high bandwidth; short pulse trains; sinusoidal electrical modulation; Bandwidth; Distributed power generation; Extinction ratio; Laser feedback; Optical signal processing; Output feedback; Power generation; Pulse modulation; Signal analysis; Space vector pulse width modulation;
Journal_Title :
Photonics Technology Letters, IEEE
