Lecture, one hour; laboratory, three hours; outside study, eight hours. Enforced requisites: courses 101A, 173DA. Introduction to measurement of basic photonic devices, including LEDs, lasers, detectors, and amplifiers; fiber-optic fundamentals and measurement of fiber systems. Modulation techniques, including AM, FM, phase and suppressed carrier methods. Possible projects include lasers, optical communication, and biomedical imaging and sensing. Finalization of design and testing of projects begun in course 173DA. Letter grading.