Fig. 1. Cross section diagram of oxidation restricted VCSEL

Fig. 2. Temperature dependent curve of VCSEL intracavity mode and gain spectrum^[17]

Fig. 3. Multi-hole apertures VCSEL^[45]. (a) Structural diagram; (b) cross section diagram

Fig. 4. Transmission through 100 m multimode fiber under NRZ modulation^[45]. (a) Eye map at a speed of 40 Gbit/s; (b) eye map at a speed of 45 Gbit/s; (c) eye map at a speed of 50 Gbit/s

Fig. 5. 940 nm normal VCSEL and 940 nm multi-hole apertures VCSEL^[45]. (a) Relationship curve between output power and current; (b) relationship curve between current and wavelength shift