US 12,113,579 B2
Fast optical receiver recovery on client side using optical interconnects with DSPs
Eric S. Maniloff, Stittsville (CA); Larry Babineau, Ottawa (CA); Wang-Hsin Peng, Ottawa (CA); and Joanne Wilde, Ottawa (CA)
Assigned to Ciena Corporation, Hanover, MD (US)
Filed by Ciena Corporation, Hanover, MD (US)
Filed on Oct. 26, 2022, as Appl. No. 17/973,849.
Claims priority of provisional application 63/272,133, filed on Oct. 26, 2021.
Prior Publication US 2023/0127848 A1, Apr. 27, 2023
Int. Cl. H04B 10/06 (2006.01); H04B 10/69 (2013.01)
CPC H04B 10/691 (2013.01) [H04B 10/693 (2013.01)] 20 Claims
OG exemplary drawing
 
1. 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.