Frequency-Offset PLL for Synchronous Optical Sampling of OTDM Signals |
| |
Authors: | Erik Benkler Andreas G Steffan Harald R Telle |
| |
Affiliation: | Phys. Tech. Bundesanstalt, Braunschweig; |
| |
Abstract: | We demonstrate a novel synchronization scheme for optical sampling which is based on a nonstandard phase-locked loop (PLL). Phase comparison is performed at a 10-GHz optical time-division-multiplexing (OTDM) base rate, thus avoiding ultrafast detectors and electronics. The employed frequency-offset PLL allows synchronous sampling of OTDM signals (or any other signals with bit rates given by integer multiples of the base rate), which would be impossible using a standard PLL. This provides a higher degree of flexibility for problem-specific sweeping than asynchronous sampling |
| |
Keywords: | |
|
|