Provided is an optical sensor for monitoring pulse waveform and blood pressure of a subject. The optical sensor may be manufactured with compact structure, low profile, low cost, and exhibits benefits of disposability, easy to apply, immunity to electro-magnetic interference, high sensitivity, having minimal affect towards sense of touch, maintains patient safety, and supportive of accurate real-time measurements for the clinician. Therefore, pulse waveform and blood pressures of a subject may be faithfully monitored continuously throughout day and night, so as to provide abundant prognostic information while avoiding interference in normal daily activity of the subject. Also provided is a system utilizing the optical sensors for monitoring pulse waveform and blood pressure of a subject. |