WAVELENGTH TUNABLE LIGHT SOURCE

摘要

Provided is a wavelength tunable light source including a super luminescent diode (SLD) generating lights in a predetermined wavelength band, a voltage generating unit generating first and second voltages, a first filter receiving the first voltage from the voltage generating unit, receiving the lights from the SLD, and transmitting, as second lights, lights corresponding to wavelengths separated by a free spectral range (FSR) from each other among the received lights, a second filter receiving the second voltage from the voltage generating unit, receiving the second lights from the first filter, and transmitting, as a third light, a light corresponding to one wavelength among the separated wavelengths among the received second light, and a reflective mirror disposed at an output end of the second filter and reflects the third light transmitted from the second filter.

主权项

1. A wavelength tunable light source comprising:
a super luminescent diode (SLD) generating lights in a predetermined wavelength band; a voltage generating unit generating first and second voltages; a first filter receiving the first voltage from the voltage generating unit, receiving the lights from the SLD, and transmitting, as a second light, a portion of the lights corresponding to wavelengths separated by a free spectral range (FSR) from each other among the received lights; a second filter receiving the second voltage from the voltage generating unit, receiving the second light from the first filter, and transmitting, as a third light, a portion of the second light corresponding to one wavelength among the separated wavelengths among the received second light; and a reflective mirror disposed at an output end of the second filter and reflects the third light transmitted from the second filter, wherein the first filter is formed to adjust the separated wavelengths according the first voltage, and the second filter is formed to adjust the one wavelength according to the second voltage.