Patent ID: 8978237
Filing Date: 2015-03-17
Classification: G02B,G02F,H01S,Y10T

Abstract:
1. A method to assemble an optical module implemented with an interfering device with an optical fiber such that optical power of light output from the interfering device and entering the optical fiber is set within a preset range, the interfering device having a plurality of arm waveguides, the method comprising steps of: selecting one of the arm waveguides formed in the interfering device, the selected one arm waveguide coupling with the optical fiber; biasing rest of the arm waveguides not selected in the selecting step, the biased arm waveguides causing optical absorption thereat; and aligning the optical fiber with the selected arm waveguide, wherein each of the arm waveguides includes a section to control a phase of light propagating therethrough and a section to modulate the light propagating therethrough, and wherein the step of biasing the rest of the arm waveguides includes a step to bias at least one of the section to control the phase of the light and the section to modulate the light.