Test structure for simultaneously characterizing two ports of an optical component using interferometer-based optical network analysis

摘要

A test structure (200; 300; 400) supports simultaneous characterization of a two port optical component. The test structure includes an input port (226; 326; 426) for receiving an input signal from an optical source, two test ports (222, 224; 322, 324; 422, 424) for connecting the test structure to a component under test (202; 302; 402), separate optical paths for supplying reflected and transmitted optical response signals from the component under test to separate receivers (238, 240; 338, 340; 438, 440), and optical components (232, 234; 332, 334; 432, 434) for combining a first portion of the input signal with the reflected optical response signal before the first portion of the input signal and the reflected optical response signal are detected by a first receiver and for combining a second portion of the input signal with the optical response signal before the second signal and the optical response signal are detected by a second receiver. The optical component of the test structure may be connected by optical fibers or integrated into a single substrate.