Abstract: An optical device has at least one reflector disposed in an optical cavity. The reflector has a plurality of mirror pairs each comprising a pair of layers, each layer of each mirror pair having an index of refraction different than that of the other layer of the respective mirror pair. A tuning layer is disposed in the reflector, the tuning layer having an index of refraction different from that of the layers of the mirror pairs. In another embodiment, the reflector has first and second adjacent reflector sections, each reflector section having a respective plurality of mirror pairs where the difference in refractive index of a mirror pair's layers defines a refractive index contrast for the mirror pair.

Abstract: A device is provided, the device comprising a first vertical cavity surface-emitting laser (VCSEL) of a monolithic vertical cavity surface-emitting laser (VCSEL) array, the first vertical cavity surface-emitting laser (VCSEL) being tunable to a first plurality of wavelengths. The device also comprises a second vertical cavity surface-emitting laser (VCSEL) of the monolithic vertical cavity surface-emitting laser (VCSEL) array, the second vertical cavity surface-emitting laser (VCSEL) being tunable to a second plurality of wavelengths, wherein at least one wavelength is in both the first plurality of wavelengths and the second plurality of wavelengths.