Device and method for extracting light clock

Abstract

The invention discloses an optical clock extractor, which belongs to the technical field of optical communication and solves the problems that in the prior art, the optical clock extractor is complex and the extractable clock range thereof is limited. The optical clock extractor comprises a one-dimensional magnetic photonic crystal optical fiber coupler module and an adjustable off-set magnetic field unit for providing an applied magnetic field for the one-dimensional magnetic photonic crystal optical fiber coupler module, wherein the one-dimensional magnetic photonic crystal optical fiber coupler module comprises a collimating lens, a polarizer, a one-dimensional magnetic photonic crystal and a self-focusing lens. The invention also provides a method for performing optical clock extraction by using the extractor, which can achieve the adjustment of the spacing between transmission harmonic peaks to finally realize the optical clock extraction and process optical clock signals into the required forms. The optical clock extractor and the method not only achieve the optical clock extraction, but also can inhibit the jitter of the optical clock signals in the transmission process, and have the characteristics of simple realization, low cost, convenient operation, and automatic recognition of optical signal clocks.

Description

technical field [0001] The invention relates to an optical clock signal extraction device and method thereof, in particular to a device and method for extracting optical clock signals by using one-dimensional magneto-photonic crystals. Background technique [0002] In an actual optical network, optical signals need to pass through a certain number of optical amplifiers and long-distance optical fibers. The noise accumulation and nonlinear properties of these components degrade the signal quality, so signal regeneration is required. All-light regeneration is the most ideal way of light regeneration. All-optical reamplification, retiming, and reshaping (3R) technology is an important technology for realizing all-optical communication. [0003] When designing an all-optical signal processing system in an all-optical communication system, such as an optical regeneration system, an optical time division multiplexing system, an optical demultiplexer, and an all-optical switch, th...

AI Technical Summary

Problems solved by technology

Generally speaking, SOA-based solutions (MZI-SOA or ultra-long SOA) are mostly researched in the world, but MZI-SOA may have the problems of complex control and high power consumption of devices; the cost of optical phase-locked loop technology is high, and High power consumption; using fiber ring mode-locked laser for clock recovery can obtain a higher rate clock signal, but its stability is poor, and the volume is relatively large; the clock recovery technology based on multi-zone DFB laser self-pulsation has high transmission rate, The device has the advantages of small size, high integration and low power consumption, but the manufacturing process of the device is relatively difficult; relatively speaking, the clock recovery technology using the Fabry-Perot filter has high-speed working potential and simple structure advantages, but it has problems such as clock drift, limited range of extractable clocks, etc.

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