Ultracompact optical filter based on a stub resonator in GaInAsP/InP optical wire technology.

We report on the fabrication and characterization of a very compact filtering structure based on a resonant stub fabricated using optical wire technology in the InP material line. The stub length is close to 1.6 microm and has been designed to get a resonance wavelength close to 1550 nm. The characterization showed a resonance frequency at 1520 nm with a 12 dB resonance peak.