US 12,113,579 B2 · Fast optical receiver recovery on client side using optical interconnects with DSPs

Abstract

The present disclosure relates to systems and methods for fast digital signal processor (DSP) optical receiver recovery, namely for optical modems configured on a client side. This approach can be used in optical protection switching (OPS) applications to allow switching between two client links fast, i.e., within 50 ms. A receiver (Rx) digital signal processor (DSP) in an optical receiver includes circuitry configured to detect traffic is interrupted on a current link, enter a holdoff period, and one of i) receive good traffic during the holdoff period and ii) have the holdoff period expire that causes a notification to a host device and retrain to acquire an optical signal.

Claims20

Dependent claims

A receiver (Rx) digital signal processor (DSP) in an optical receiver, the Rx DSP comprises circuitry configured to:

detect traffic is interrupted on a current link associated with the optical receiver,
enter a holdoff period where no loss of signal (LOS) or loss of light (LOL) is reported while an optical signal associated with the traffic i) is switched to a new link or ii) recovers from disruption on the current link, and
one of i) receive good traffic during the holdoff period and ii) have the holdoff period expire that a) causes a notification to a host device and b) retrain the RX DSP to acquire the optical signal to receive the traffic on the new link or current link, wherein the Rx DSP is retrained to determine various settings on the optical receiver.

Dependencies are inferred from the claim text.

Fast optical receiver recovery on client side using optical interconnects with DSPs

Life of this patent

Fast optical receiver recovery on client side using optical interconnects with DSPs

Life of this patent

Abstract

Claims20