OPTICAL COMPOSITE MODULE, OPTICAL WAVELENGTH MULTIPLEXER, OPTICAL WAVELENGTH SEPARATING DEVICE AND OPTICAL COMPOSITE MODULE MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an optical composite module realizing the facilitation of the adjustment of an optical axis and made compact and excellent in mounting property.

SOLUTION: A focusing rod lens 2 whose one end a band-pass optical filter (BPF) 5 is attached to, and a two-center glass tube 3 having the same outside diameter as that of the lens 2 and housing an optical fiber for input 1a and an optical fiber for output 1b are fixed. A center line between the optical fibers 1a and 1b is aligned with the optical axis of the lens 2. Light having wavelengthλ4 emitted from the optical fiber 1a passes through the BPF 5, is received by a light receiving chip 7 and converted into an electrical signal. The light emitted from the optical fiber 1a other than the above-mentioned light is reflected on the BPF 5 and connected to the optical fiber 1b.

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