Light amplification at 650 nm in a polymer waveguide with dye-doped cladding

An optical waveguide amplifier is fabricated in SU8 polymer with a cladding layer of dye-doped PMMA. Gain of 15 dB is achieved for a 650 nm signal, with a low threshold pump intensity of 0.25 /spl mu/J/mm/sup 2/.