| 摘要 |
PROBLEM TO BE SOLVED: To provide a wavelength selection reflective circuit of low manufacturing costs capable of continuous and high speed wavelength sweeping, and fine adjustment of the wavelength sweeping, and a multi-wavelength light source having the wavelength selection reflective circuit. SOLUTION: The wavelength selection reflective circuit 100 concerning the present invention is provided with an optical switch 110 of one to four which connects one route 112 with any of four routes 114 by heat, four wavelength selection reflective routes 120 which is connected to the four routes 114 of the optical switch 110, respectively and whose reflective wavelength is varied, a heater 130 which changes the reflective wavelength of the wavelength selection reflective part 120 by heating the wavelength selection reflective part 120 and optical output terminals 140 which are formed to each of the four paths 114 of the optical switch and output a part of light passing through the optical switch 110. COPYRIGHT: (C)2009,JPO&INPIT
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