title: Packet clock recovery using a bismuth oxide fiber-based optical power limiter.
abstract: We demonstrate an optical clock recovery circuit that extracts the line rate component on a per packet basis from short data packets at 40Gb/s. The circuit comprises a Fabry-Perot filter followed by a novel power limiting configuration, which in turn consists of a 5m highly nonlinear bismuth oxide fiber in cascade with an optical bandpass filter. Both experimental and simulation-based results are in close agreement and reveal that the proposed circuit acquires the timing information within only a small number of bits, yielding a packet clock for every respective data packet. Moreover, we investigate theoretically the scaling laws for the parameters of the circuit for operation beyond 40 Gb/s and present simulation results showing successful packet clock extraction for 160 Gb/s data packets. Finally, the circuit's potential for operation at 320 Gb/s is discussed, indicating that ultrafast packet clock recovery should be in principle feasible by exploiting the passive structure of the device and the fsec-scale nonlinear response of the optical fiber.
authors: Ch
authors: Ch
authors: Kouloumentas
authors: N
authors: N
authors: Pleros
authors: P
authors: P
authors: Zakynthinos
authors: D
authors: D
authors: Petrantonakis
authors: D
authors: D
authors: Apostolopoulos
authors: O
authors: O
authors: Zouraraki
authors: A
authors: A
authors: Tzanakaki
authors: H
authors: H
authors: Avramopoulos
authors: I
authors: I
authors: Tomkos