Optical Fiber Sensor Connected To Optical Fiber Communication Line

Abstract

An optical fiber sensor connected to an optical fiber communication line usable on an optical fiber communication line of the Internet etc. and able to share a communication line and a sensor line is provided. It has an optical fiber sensor line being an optical fiber (11d, 11b, 11e) provided with a core and with a cladding provided on an outer circumference of the core and provided so as to be optically coupled with the optical fiber communication line (10, 11a), which has a sensor portion (SPa, SPb, SPc, SPd) for enabling interaction of a portion of transmitted light with an external environment and includes a portion 11b for transmitting at least communication light from the optical fiber communication line; a light source (17) emitting sensor light to an incident end of the optical fiber sensor line; and a light receiving portion (18) detecting the sensor light emitted from an emitting end of the optical fiber sensor line via the sensor portion.

Dependencies are inferred from the claim text.