Our FWOCT firmware introduces substantial enhancements in k-space remapping, refining signal processing workflows and outputs for Swept-Source Optical Coherence Tomography (SS-OCT) devices. FWOCT's core functionality lies in the k-space remapping of OCT signals within the FPGA.

FWOCT enables the use of advanced analog-to-digital converters (ADCs) within digitizers. In SS-OCT applications, the k-clock establishes a non-uniform time base, while modern ADCs require a stable time base for consistent and reliable operation. To address this, FWOCT treats the k-clock and OCT signal as separate analog channels. By implementing sophisticated digital signal processing techniques, FWOCT optimizes ADC performance. This approach ensures that the ADC operates under optimal conditions, thereby improving signal quality. The fundamental principle of FWOCT is to translate the ADC's uniform time base to the k-clock's non-uniform time base in SS-OCT applications.

FWOCT supports three operational modes, providing significant flexibility in system architecture:

• The k-clock/MZI can be adjusted across a wide range for example (4 - 2000 MHz for ADQ35).
• The k-clock can operate at full rate or at a reduced frequency to lower cost and complexity.
• OCT signal frequencies from 0 Hz up to 2 GHz are supported.