Title :
Design of a Widely Tunable Laser with a Chirped Ladder Filter
Author :
Kakitsuka, T. ; Matsuo, S. ; Jeong, S.-H. ; Segawa, T. ; Okamoto, H. ; Kawaguchi, Y. ; Kondo, Y. ; Yoshikuni, Y. ; Suzuki, H.
Author_Institution :
NTT Photonics Lab., NTT Corp., Kanagawa
Abstract :
We numerically investigated a digitally tunable laser with a chirped ladder filter and a ring resonator with the aim of achieving a wide wavelength-tuning region covering C-band, by clarifying the relation between the gain spectra and the characteristics of the ladder filter. Experimental results are well explained by the numerical simulation model based on multimode rate equations. Introducing a chirped structure into ladder-type filter is effective in achieving both wide tunability and stable lasing mode. It is shown that a tuning range of over 40 nm can be achieved by introducing a chirped ladder filter
Keywords :
laser cavity resonators; laser stability; laser tuning; numerical analysis; optical design techniques; optical filters; C-band; chirped ladder filter; digitally tunable laser design; gain spectra; multimode rate equation; numerical simulation model; ring resonator; stable lasing mode; wavelength-tuning; Chirp; Digital filters; Laser modes; Numerical models; Numerical simulation; Optical design; Optical ring resonators; Resonator filters; Ring lasers; Tunable circuits and devices;
Conference_Titel :
Numerical Simulation of Semiconductor Optoelectronic Devices, 2006. NUSOD '06. International Conference on
Conference_Location :
Nanyang Technological University, Nanyang Executive Centre, Singapore, China
Print_ISBN :
0-7803-9755-X
DOI :
10.1109/NUSOD.2006.306734
