The present invention provides a cooling component or sensate component which has further strong cooling intensity and is excellent in the persistency or refresh-feeling and cool-feeling, a sensate composition comprising the same, and various products comprising the sensate composition. The transmitter-receiver supports a scalable symbol rate mode that reduces the symbol rate in the time domain and decreases the bandwidth in the frequency domain, over a predetermined prior value. Each of the first phase modulator and second phase modulator has staircase-like discontinuous parts, each formed from a predetermined number of stepped portions, formed concentrically around an optical axis at the pitch defined by an optical path difference function.