Title :
Sampled grating DBR laser arrays with adjustable 0.8/1.6 nm wavelength spacing
Author :
Lee, San-Liang ; Jang, Ing-Fa ; Pien, Ching-Tang ; Wang, Chi-Yu ; Shih, Tien-Tsorng
Author_Institution :
Dept. of Electron. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan
Abstract :
The difficulty in fabricating multiwavelength laser arrays with uniform wavelength spacing is overcome by using sampled grating distributed Bragg reflector (DBR) lasers as the constituent of a laser array. The sampling periods of the DBR mirrors are varied from laser to laser to provide reflection combs with different spacings in wavelength. Arrays of twelve lasers have been successfully fabricated with a single holographic exposure step. The wavelength spacing among the lasers can be adjusted to be around 0.8 or 1.6 nm with a simple tuning mechanism.
Keywords :
diffraction gratings; distributed Bragg reflector lasers; holography; laser tuning; optical fabrication; optical transmitters; quantum well lasers; semiconductor laser arrays; MQW lasers; adjustable wavelength spacing; laser tuning; multiwavelength laser arrays; reflection combs; sampled grating DBR laser arrays; sampled grating distributed Bragg reflector lasers; sampling periods; simple tuning mechanism; single holographic exposure step; uniform wavelength spacing; wavelength spacing; Bragg gratings; Distributed Bragg reflectors; Laser theory; Laser tuning; Mirrors; Optical arrays; Optical reflection; Phased arrays; Sampling methods; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
