Optical multiplexer/demultiplexer module and production method therefor

A production method for an optical multiplexer/demultiplexer module, comprising the steps of:

• preparing a first element having a first lens, a first bandpass filter, and a marker;
• preparing a second element having a wedge plate for optical path correction and a marker, said wedge plate being formed of a material transparent to the wavelength of light to be used and having a flat surface inclined, with respect to the normal to the optical axis of said module by a given angle;
• fixing said second element to said first element after alignment of said markers of said first and second elements;
• preparing a first ferrule assembly having a first sleeve and a first ferrule inserted and fixed in said first sleeve, said first ferrule having first and second optical fibers;
• fixing said first ferrule assembly to said first element after aligning said first ferrule assembly so that the direction of inclination of said flat surface of said wedge plate coincides with the direction of extension of a plane defined by said first and second optical fibers;
• preparing a third element having a second lens;
• fixing said third element to said second element after aligning said third element to said second element;
• preparing a second ferrule assembly having a second sleeve and a second ferrule inserted and fixed in said second sleeve, said second ferrule having a third optical fiber;
• and
• fixing said second ferrule assembly to said third element.

An optical connector module for connection with an optical module having a first hole for inputting and outputting light, a first cylindrical connecting portion having a given outer diameter and an axial hole, and an optical component provided in an optical path extending through said first hole and said axial hole of said first cylindrical connecting portion, said optical connector module comprising:

• a second cylindrical connecting portion having said given outer diameter and an axial hole, said second cylindrical portion being adapted to be connected to said first cylindrical connecting portion;
• a second hole for inputting and outputting light;
• and
• an optical path correcting optical component provided in an optical path extending through said second hole and said axial hole of said second cylindrical connecting portion.