An apparatus configured to analyze a component of an object, the apparatus comprising: a signal detection sensor (100, 310) comprising: a light source configured to emit light to the object, a detector configured to detect a signal of light scattered or reflected from the object, an ultrasonic generator configured to transmit an ultrasonic wave toward the object at irregular ultrasonic transmission time intervals to modulate a frequency of the light emitted to the object, and a controller configured to control the ultrasonic transmission time intervals of the ultrasonic generator to be irregular; and a processor configured to control the signal detection sensor and analyze the component of the object based on the signal of light detected by the detector, characterized in that the controller is further configured to gradually increase or decrease the ultrasonic transmission time intervals based on an order of ultrasonic transmission of the ultrasonic generator or assign some of a plurality of predefined different time intervals to the ultrasonic transmission time intervals based on a pseudo random sequence, wherein the controller is further configured to control a difference between an ith transmission time interval T i and an (i+1)th transmission time interval T i+1 to be greater than a predetermined threshold, where i is an integer greater than or equal to 1, wherein the predetermined threshold is greater than a length of an ultrasonic transmission wave of the ultrasonic generator, or wherein the predetermined threshold is greater than a length of time for which a main reflected wave for an ultrasonic transmission wave of the ultrasonic generator is received by the detector. a light source configured to emit light to the object, a detector configured to detect a signal of light scattered or reflected from the object, an ultrasonic generator configured to transmit an ultrasonic wave toward the object at irregular ultrasonic transmission time intervals to modulate a frequency of the light emitted to the object, and a controller configured to control the ultrasonic transmission time intervals of the ultrasonic generator to be irregular; and a processor configured to control the signal detection sensor and analyze the component of the object based on the signal of light detected by the detector, characterized in that the controller is further configured to gradually increase or decrease the ultrasonic transmission time intervals based on an order of ultrasonic transmission of the ultrasonic generator or assign some of a plurality of predefined different time intervals to the ultrasonic transmission time intervals based on a pseudo random sequence, wherein the controller is further configured to control a difference between an ith transmission time interval T i and an (i+1)th transmission time interval T i+1 to be greater than a predetermined threshold, where i is an integer greater than or equal to 1, wherein the predetermined threshold is greater than a length of an ultrasonic transmission wave of the ultrasonic generator, or wherein the predetermined threshold is greater than a length of time for which a main reflected wave for an ultrasonic transmission wave of the ultrasonic generator is received by the detector.