Abstract: A distributed light intensity modulator, comprising: a substrate (60); a light splitting element (10), an optical waveguide (20) and a light combining element (30) which are sequentially connected and provided on the substrate (60); a driving electrode (40) provided on the substrate (60) and comprising a plurality of sub-driving electrodes (41) arranged at intervals, the optical waveguide (20) sequentially passing through the sub-driving electrodes (41); and at least one voltage bias electrode (50), at least some of which are provided spaced apart from the sub-driving electrodes (41). The length of each sub-driving electrode (41) is far less than the total length of such conventional modulator, and in each sub-driving electrode (41), an optical signal and an electrical signal can be synchronously propagated approximately. The distributed light intensity modulator minimizes the walk-off phenomenon between photoelectric signals.