SANTA ROSA, Calif., Sept. 24 -- SpectraSwitch Inc. has raised $6 million of venture funding in an extension to their B-round led by Advanced Technology Ventures and NIF Ventures. The financing follows the company's successful second venture capital round of $18.1 million raised in May of 2000 led by Advanced Technology Ventures. To date, SpectraSwitch has raised a total of $29 million in venture financing. "Today's announcement is confirmation to the strength of SpectraSwitch's business model and the compelling advantages liquid crystal technology brings to optical components," commented lead investor, Wes Raffel, general partner, Advanced Technology Ventures. SpectraSwitch will use this money for capital expenditures and the ramp of manufacturing capacity aimed at supporting the company's continued product development initiatives and early customer acquisitions. In June of this year, SpectraSwitch introduced their second product, the WaveWalker 2x2 Optical Switch.