| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a photoactive device which can prevent an exciting light source from being broken. <P>SOLUTION: The photoactive device 1 is provided in sequence toward an output collimater 12 from an input connector 11 with an optical isolator 21, an optical coupler 31, a YbDF 41, an optical isolator 22, a bandpass filter 50, an optical coupler 32, a YbDF 42, an optical isolator 23, a combiner 60, and a YbDF 43. In addition, it is also provided with an optical coupler 34 and an exciting light source 71 which are connected with the optical couplers 31 and 32, and a plurality of exciting light sources 72 connected with the combiner 60. The optical coupler 33 is a wavelength multiplex fiber coupler, which is provided between the exciting light source 71 and the optical fiber 43 for amplification. The photo coupler 33 outputs an amplified light which is sent from the optical isolator 23 to the combiner 60, and outputs a light with an excitation light wavelength among those sent from the optical combiner 60 to an ASE transmission output port 33a. <P>COPYRIGHT: (C)2008,JPO&INPIT |
