Thermally-assisted magnetic recording head having photoelectric wiring lines integrally formed on waveguide

An information recording and reproduction apparatus comprising:

• a magnetic recording medium on which information is recorded and from which the recorded information is reproduced;
• a light source configured to output a light beam to heat the magnetic recording medium;
• a near-field light head having a recording element for recording information on the magnetic recording medium and a reproducing element for reproducing information from the magnetic recording medium, the near-field light head being supported so as to confront a surface of the magnetic recording medium and for undergoing pivotal movement about two axes that are perpendicular to each other and parallel to a surface of the magnetic recording medium, the near-field light head having a near-field light generating element for generating near-field light;
• an optical waveguide connected to the near-field light head for introducing a light beam from the light source into the near-field light head from which the near-field light generating element generates near-field light;
• a control section configured to supply a current to the recording element of the near-field light head for generating a recording magnetic field in a direction perpendicular to the surface of the magnetic recording medium;
• and
• a photoelectric composite wiring line having the optical waveguide and electric wiring lines integral with the optical waveguide and electrically connecting the near-field light head to the control section, the optical waveguide and all of the electric wiring lines branching off from a distal side of the photoelectric composite wiring line so as to connect to the near-field light head.