摘要:
A fiber optic system comprising a modulated signal source coupled to a spectral filtering element characterized in that the bandwidth of the optical spectrum of the signal after the spectral filtering element is reduced relative to the optical bandwidth of the spectrum before the filtering element.
摘要:
An electrically tunable Fabry-Perot structure using a deformable multi-layer mirror construction wherein Ga1−aAlaAs, where a 0.96, and a material selected from the group consisting of either Ga1−zAlzAs, where 0.7>Z>0, or Ga1−yAlyAs/Ga1−zAlzAs/Ga1−yAlyAs, where 0.7>Z>0 and y>0.5. The Ga1−xAlxAs is wet oxidized by exposing its edge to water in a nitrogen or helium atmosphere at a temperature of between about 360° C. and 450° C. so as to transform it to AlOx. The resulting AlOx layers abut the sacrificial layer and act as etch stops during the formation of a cantilever Fabry-Perot structure by etching of the sacrificial layer.