Whether a wavelength is reflected or transmitted is ... creates Bragg gratings and waveguides in a Ge-doped silica layer sandwiched between two other silica layers. It is a highly flexible ...

Solid-state lasers using yttrium aluminum garnet as the matrix material, doped with neodymium (Nd:YAG) can have wavelength outputs of 1.064 µm, 532 nm, 473 nm, 355 nm, or 266 nm. Solid-state lasers ...

generating light with the wavelength of the smaller-bandgap material. Above this 'active layer', there is a layer of material with a high concentration of holes (p-type GaN doped with Mg).

Fiber lasers use an optical fiber doped with rare-earth elements (erbium ... the performance with fiber-based lasers, combining wide wavelength tunability with the practicality of chip-scale ...

A spectrally resolving quantum dot photodetector has been designed and fabricated which is able to discriminate wavelengths in the visible region. The device consists of a monolayer of 5.4 nm diameter ...

Unlike erbium-doped fiber amplifiers (EDFAs), which boost wavelengths in the 1530-1610 nm range, a Raman amplifier can increase the signal strength of any wavelength by pumping at 13THz more than ...