| 摘要 |
A wavelength variable light source according to an embodiment of the present invention includes a superluminescent light emitting diode for generating light in a specific wavelength band; a voltage generating unit for generating a first voltage and a second voltage; a first filter for receiving the first voltage from the voltage generating unit, receiving light emitted from the superluminescent light emitting diode, and passing the light, corresponding to wavelengths spaced with specific wavelength distance apart among the received light, as second light; a second filter for receiving the second voltage from the voltage generating unit, receiving the second light from the first filter, and passing light, corresponding to one wavelength among the spaced wavelengths of the received second light, as third light; a reflective mirror arranged at the output end of the second filter, for reflecting the third light through the second filter, wherein the first filter is configured to adjust the spaced wavelengths according to the first voltage, and the second filter is configured to adjust one wavelength according to the second voltage. |
