Widely Tunable Semiconductor Laser Based on Digital Concatenated Grating With Multiple Phase Shifts

Author

Jialin Zhao ; Sheng Hu ; Yichao Tang ; Hang Zhao ; Yonglin Yu

Author_Institution

Wuhan Nat. Lab. for Optoelectron., Huazhong Univ. of Sci. & Technol., Wuhan, China

Volume

5

Issue

5

fYear

2013

fDate

Oct. 2013

Firstpage

1502008

Lastpage

1502008

Abstract

In this paper, we proposed a widely tunable distributed Bragg reflector (DBR) laser based on digital concatenated grating with multiple phase shifts (MPS-DCG). The MPS-DCG can provide a comblike reflectivity spectrum with flat envelop covering over 100-nm wavelength range. Static characteristics of the MPS-DCG DBR laser, including the wavelength tuning range, output power, side-mode suppression ratio (SMSR), and L-I curves, are simulated using a time-domain traveling-wave model combined with a digital filter method. Tuning range of approximately 90 nm is obtained with good SMSR. The L-I curves show that the laser threshold current is around 30 mA.

Keywords

diffraction gratings; distributed Bragg reflector lasers; laser tuning; reflectivity; semiconductor lasers; time-domain analysis; L-I curves; comblike reflectivity spectrum; digital concatenated grating; digital filter method; laser threshold current; multiple phase shifts; output power; side-mode suppression ratio; static characteristics; time-domain traveling-wave model; wavelength tuning range; widely tunable distributed Bragg reflector laser; widely tunable semiconductor laser; Bragg gratings; Distributed Bragg reflectors; Gratings; Laser modes; Reflection; Tuning; Gratings; modeling; time-domain; tunable lasers;

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2013.2278514

Filename

6579629