Abstract
We demonstrate a widely tunable distributed Bragg reflector (DBR) laser operating at 1.8-µm, in which the DBR section was butt-jointed InGaAsP (λ = 1.45 μm) material. Through current and temperature tuning, a widely tuning range of over 11 nm with a side mode suppression ratio (SMSR) higher than 30 dB is obtained. Utilizing this DBR laser, the water and methane detection experiment has been successfully implemented, which illustrates the potential capacity of such DBR laser as the light source used for multispecies gas sensing. The work also illustrates that the butt-joint active-passive integration technology developed for the InGaAsP quantum-wells (QWs) can be successfully applied in the InGaAs QWs.
Highlights
Cost-effective monitoring, rapid measurement and equipment miniaturization is of great importance for an excellent gas sensing system, the widely tunable semiconductor lasers show their advantages when they are applied in such system [8,9]
The electro-optical characteristics of the device are measured at different temFirst, the electro-optical characteristics of theofdevice are and measured different temperperature, as shown in Figure 3a, with a current the distributed Bragg reflector (DBR)
It canthe be seen above test that the laser can achieve continuous wavelength tuning, single-mode and good wavelength stability, whichstability, meet the wavelength tuning,output, single-mode output, and good wavelength which meet the requirements of light sourceof forlight gas source detection
Summary
Hongyan Yu 1,2,3, *, Jiaoqing Pan 1,2,3, * , Xuliang Zhou 1,2,3 , Hui Wang 2,4 , Liang Xie 2,4.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
