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We report the first experimental observation of different forms of wavelength polarization switching and bistability with a 1550-nm VCSEL operated just above threshold and subject to orthogonally-polarised optical injection.
Pure frequency-induced polarization testability of a 1550 nm single-mode VCSEL subject to orthogonal optical injection has been observed. The hysteresis width becomes constant when the injection power is greater than a value Pnu. Power-induced polarization bistability is also found near Pnu.
Threshold current reduction and polarization modulation of an electrically injected spin-polarized VCSEL operating at 200 K have been investigated experimentally and theoretically.
We experimentally demonstrate deterministic polarization mode control in VCSEL utilizing a single-layer high-index-contrast subwavelength grating mirror. Orthogonal polarization suppression ratio of 36 and 28 dB was obtained under both CW and large-signal pulsed operation.
Polarization stable, wafer-fused 1310 nm VCSELs employing sub-wavelength shallow gratings on their top DBR and emitting 1.5 mW single mode output power in the 20degC-75degC temperature range are demonstrated.
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