Superluminescent diode and optical amplifier with extended bandwidth
AssigneePrinceton Lightwave, Inc.
InventorGerard A. Alphonse
Life of this patent
Estimating the term…
Abstract
A superluminescent diode having emission layers which emit different wavelengths of light disposed side-by-side whereby light emitting in a first direction from an emission layer having a longer wavelength than an adjacent layer in the first direction is not absorbed. Thus, light of the different wavelengths is represented in an output spectra in the first direction at a point beyond the adjacent layer. A semiconductor optical amplifier is formed by creating a symmetrical structure in which the longest wavelength material is grown in the center and the shortest wavelength material is grown near the facets.
Claims8
A superluminescent diode (SLD), comprising:
- (a) a waveguide having a length defined by an optical beam path, the optical beam path being located between, and parallel to, a first cladding layer and a second cladding layer, the optical beam path including
- (i) a first emission layer having a first material with a light-emission wavelength and a spectral width;
- and
- (ii) a second emission layer having a second material different from the first material, the second material having a light-emission wavelength different from the light-emission wavelength of the first material, and having a spectral width, said second emission layer being disposed along the length of the waveguide, and in the optical beam path with said first emission layer.
Dependencies are inferred from the claim text.