Single shot amplitude and phase characterization of optical arbitrary waveforms

Abstract

Using a time-gated dual quadrature spectral interferometry technique, for the first time we demonstrate single-shot characterization of both spectral amplitude and phase of approximately 1THz bandwidth optical arbitrary waveforms generated from a 10 GHz frequency comb. Our measurements provide a temporal resolution of 1ps over a record length of 100ps. Singleshot characterization becomes particularly relevant when waveform synthesis operations are updated at the repetition rate of the comb allowing creation of potentially infinite record length waveforms. We first demonstrate unambiguous single shot retrieval using rapidly updating waveforms. We then perform additional single-shot measurements of static user-defined waveforms generated via line-by-line pulse shaping.

Single-shot multiple-delay crossed-beam spectral interferometry for measuring extremely complex pulses

“…At the same time, this effort is also driving the field of optical metrology to develop new high-temporal-and high-spectral-resolution techniques [2][3][4][5][6][7][8] to measure such extremely complex waveforms.…”

Linear self-referenced complex-field characterization of fast optical signals using photonic differentiation

“…a local oscillator, may not be always available; the need for a reference, in the measurement setup (e.g. as in referencebased interferometry [11,[14][15][16]) also introduces a higher level of complexity in the measurement platform. Obviously, the development of optical pulse measurement methods capable of providing this set of stringent performance specifications is of interest for applications beyond the field of optical telecommunications, e.g.…”

Optical arbitrary waveform characterization using linear spectrograms

“…[5,13]. In experiments such as ours based on a periodically modulated CW source [21,22], an independent reference pulse is generally not available.…”