Electronic device and method for controlling sensor

1 . An electronic device comprising:

a transmission circuit;

a reception circuit; and

one or more processors communicatively coupled to the transmission circuit, and the reception circuit,

wherein the transmission circuit comprises:

a laser gain circuit configured to output or generate a plurality of first laser beams in a broadband under control of the one or more processors,

a fixed array distributed bragg reflector (DBR) grating configured to change each of the plurality of first laser beams into a corresponding one of a plurality of second laser beams, wherein each of the plurality of second laser beams has a specified wavelength,

a modulator configured to modulate the plurality of second laser beams,

a monitoring circuit configured to identify whether the plurality of modulated laser beams are output at a specified intensity and the specified wavelength, and

an output coupler configured to adjust output directions and angles of the plurality of modulated laser beams and output the plurality of modulated laser beams to an outside of the electronic device.

2 . The electronic device of claim 1 ,

wherein the reception circuit comprises at least one photo detector, and

wherein the at least one photo detector is spaced a specified distance apart from the output coupler.

3 . The electronic device of claim 1 ,

wherein the laser gain circuit comprises a plurality of laser gain chips, and

wherein the laser gain circuit is configured to output or generate the plurality of first laser beams in time division.

4 . The electronic device of claim 1 , wherein the specified wavelength is shorter than a wavelength of the plurality of first laser beams output from the laser gain circuit.

5 . The electronic device of claim 1 , wherein the modulator is configured to modulate the plurality of second laser beams into continuous waves or pulse waves.

6 . The electronic device of claim 1 , wherein the modulator comprises at least one of a lock-in amplifier or a low pass filter.

7 . The electronic device of claim 1 , wherein the monitoring circuit comprises at least one of an edge illuminated photodiode, a Mach-Zehnder interferometer (MZI) sensor, a ring resonator, a line coupling, or a splitter.

8 . The electronic device of claim 1 ,

wherein the monitoring circuit is disposed between the output coupler and the modulator, and

wherein the monitoring circuit is connected to the output coupler and to the modulator.

9 . The electronic device of claim 1 , wherein the one or more processors are configured to control time synchronization of the reception circuit to receive the plurality of modulated laser beams in at least one of time division or sequence.

10 . The electronic device of claim 1 ,

wherein the reception circuit comprises a plurality of photo detectors, and

wherein each of the plurality of photo detectors is spaced a first specified distance apart from the output coupler.

11 . The electronic device of claim 10 , wherein each of the plurality of photo detectors is spaced a first specified distance or a second specified distance apart from the output coupler.

12 . The electronic device of claim 1 , wherein the one or more processors are configured to control intensity and wavelength of light output from the laser gain circuit, based on information received from the monitoring circuit.

13 . The electronic device of claim 1 , further comprising:

a case having the transmission circuit and the reception circuit disposed on a rear surface thereof;

a display disposed on a front surface of the case; and

a band connected to the case and configured to enable the electronic device to be worn on a user's wrist.

14 . The electronic device of claim 13 , wherein the rear surface of the case is configured to at least partially come into contact with a user when the electronic device is worn on the user's wrist through the band.

15 . The electronic device of claim 14 , wherein the rear surface of the case is configured such that at least a portion of the output coupler and at least a portion of the reception circuit are exposed.

16 . A method performed by an electronic device for controlling a sensor in the electronic device, the method comprising:

controlling, by the electronic device, a laser gain circuit to output or generate a plurality of first laser beams in a broadband;

performing, by the electronic device, control to change each of the plurality of first laser beams into a corresponding one of a plurality of second laser beams, wherein each of the plurality of second laser beams has a specified wavelength based on a fixed array distributed bragg reflector (DBR) grating;

modulating, by the electronic device, the plurality of second laser beams;

identifying, by the electronic device, whether the plurality of modulated laser beams are output at a specified intensity and the specified wavelength;

adjusting, by the electronic device, output directions and angles of the plurality of modulated laser beams and outputting the plurality of modulated laser beams to an outside of the electronic device; and

detecting, by the electronic device the plurality of modulated laser beams through a reception circuit.

17 . The method of claim 16 , wherein the controlling of the laser gain circuit to output or generate the plurality of first laser beams comprises outputting or generating the plurality of first laser beams in time division.

18 . The method of claim 16 , wherein the specified wavelength is shorter than a wavelength of the plurality of first laser beams output from the laser gain circuit.

19 . The method of claim 16 , wherein the modulating of the plurality of second laser beams comprises modulating the plurality of second laser beams into continuous waves or pulse waves.

20 . The method of claim 16 , wherein the detecting of the plurality of modulated laser beams through the reception circuit comprises controlling time synchronization of the reception circuit to receive the plurality of modulated laser beams in at least one of time division or sequence.