Patent ID: 7058257

Claim:
A WDM multiplexer/demultiplexer comprising: an input/output optical fiber having an end section; a first set of optical fibers having end sections; a second set of optical fibers having end sections; a plurality of wavelength-dependent filters, each wavelength-dependent filter associated and in fixed relationship with an end section of first and second set optical fibers so that light transmitted through said wavelength-dependent filter passes into said associated end section; and a core frame holding said end sections of said input/output optical fiber, said end sections of said first and second set optical fibers, and said plurality of wavelength-dependent filters so that light from said input/output optical fiber and reflected by said plurality of wavelength-dependent filters travels in a light path from said input/output optical fiber to each wavelength-dependent filter of each end section of said first and second set optical fibers alternately.