Fig. 1. Schematic diagram of the cross-section of the oxidation-limited high-speed VCSEL

Fig. 2. The measurement results of the 940 nm VCSELs with 3 μm、6 μm and 9 μm oxidation aperture at room temperature. (a) L-I; (b) V-I; (c) optical spectrum; (d) side-mode suppression ratio (SMSR); (e) the bandwidth of 3 dB; (f) the eye diagram^[16]

Fig. 3. (a) Schematic diagram of the WDM system using four VCSELs and MMF^[2]; (b) the optical spectrum of the 850 nm、880 nm、910 nm and 940 nm VCSELs^[12]

Fig. 4. EDR and BR values from large signal measurements, for a long photon lifetime (blue) and a short photon lifetime (red). The spectral efficiency of M=2.1 bit was found experimentally by the large signal measurement results^[20]

Fig. 5. (a) Refractive index profile and the standing wave distribution of the designed VCSEL; (b)SEM image of the cross section of the VCSEL after the oxidation; (c) the L-I-V of the 1030 nm VCSEL; (d) the optical spectrum of the 1030 nm VCSEL; (e) the small signal response of the 1030 nm VCSEL at 25 °C; (f) the small signal response of the 1030 nm VCSEL at 85 °C

Fig. 6. (a) The eye diagram of the 1550 nm VCSEL; (b) the bathtub curve of the 1550 nm VCSEL. BTJ is 6 μm.