Embodiments of wavelength tunable lasers are disclosed. The wavelength
tunable lasers include thermo-optic organic material that has an index of refraction
that can quickly vary in response to changes in temperature. By controlling the
temperature in the thermo-optic organic material through the use of heaters or
coolers, the wavelength tunable lasers and the integrated optical components can
be quickly and selectively tuned over a broad range of wavelengths with high spectral selectivity.
