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

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...

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Bibliographic Details
Published inIEEE photonics journal Vol. 5; no. 5; p. 1502008
Main Authors Zhao, Jialin, Hu, Sheng, Tang, Yichao, Zhao, Hang, Yu, Yonglin
Format Journal Article
LanguageEnglish
Published IEEE 01.10.2013
Subjects
Bragg gratings
Distributed Bragg reflectors
Gratings
Laser modes
modeling
Reflection
time-domain
tunable lasers
Tuning
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Summary: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.
ISSN:1943-0655
1943-0647
DOI:10.1109/JPHOT.2013.2278514