VCSEL structures and applications
Vertical-Cavity Surface-Emitting Lasers (VCSELs) for sensing and communication applications in the 1.3-2.3μm wavelength range are presented. The devices feature low thresholds, electronically tunable single-mode emission and modulation bandwidths exceeding 10Gb/s.
This paper takes a case study of the secondary and higher vocational education in Shijiazhuang,and analyzes the problems like inefficient administration and independence of schools.Therefore,countermeasures are suggested for multilateral coordination of government,society,and schools for the purpose of construction of the modern vocational education system.