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This paper reports the fabrication of polymeric optical waveguides. Single mode planar slab waveguides and straight waveguides had been fabricated from the organic polymer B-staged bisbenzocyclobutene (BCB) from DOW Chemical. A low cost fabrication method, chemical etching is used to form the waveguides on BK7 glass substrates. The processing conditions required for the fabrication of single mode optical waveguides are presented.