摘要:
An athermalized, polymer overclad integrated optical device such as multiplexer/demultiplexer (20) or a Mach-Zender interferometer in which thermally-induced shifts in channel wavelengths are minimized. The device includes a doped silica waveguide core (24) on a planar substrate (22) and a polymer overclad (30) having a negative variation in refractive index versus temperature dn/dT to inhibit shifts in the channel wavelengths.
摘要:
The present invention provides methods of tuning the optical properties, such as the channel center wavelengths, of an integrated optical waveguide device by providing a device, such as a wavelength division multiplexer of demultiplexer, which contains an organic material, and fine tuning the device by exposing the organic material to at least one incremental step of UV irradiation.