Author(s): Yu, HY (Yu, Hongyan); Pan, JQ (Pan, Jiaoqing); Zhou, XL (Zhou, Xuliang); Wang, H (Wang, Hui); Xie, L (Xie, Liang); Wang, W (Wang, Wei)

Source: APPLIED SCIENCES-BASEL Volume: 11 Issue: 6 Article Number: 2618 DOI: 10.3390/app11062618 Published: MAR 2021

Abstract: We demonstrate a widely tunable distributed Bragg reflector (DBR) laser operating at 1.8-mu m, in which the DBR section was butt-jointed InGaAsP (lambda = 1.45 mu m) 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.

Accession Number: WOS:000645790800001

eISSN: 2076-3417

Full Text: https://www.mdpi.com/2076-3417/11/6/2618