All-optical wavelength converter based on photonic crystal optical fiber four-wave frequency mixing effect

Abstract

The invention provides an all-optical wavelength converter based on a photonic crystal optical fiber four-wave frequency mixing effect. The all-optical wavelength converter comprises a laser, an optical crystal optical fiber and an optical filter, wherein the laser is a long pulse laser or a continuous laser with a pulse width more than tens of picoseconds, and the laser is used for outputting a pump light and providing a converting wavelength; the photonic crystal optical fiber is used for receiving and transmitting an output light of the laser; a laser beam can generate a degenerated four-wave frequency mixing effect during being transmitted in the photonic crystal optical fiber; and the laser beam output from the photonic crystal optical fiber passes through a narrow-band optical filter with a central wavelength of lambda and a proper bandwidth, thus, the laser beam with the wavelength of lambda can be obtained. According to the all-optical wavelength converter, one laser is adopted to synchronously provide the pump source and the converting wavelength, so that the all-optical wavelength converter has the advantages of simple structure, low cost and the like; and moreover, structural parameters of the photonic crystal optical fiber are designed, so that wavelength converting within a larger range can be achieved.

Description

technical field [0001] The invention relates to an all-optical wavelength converter, in particular to an all-optical wavelength converter based on the photonic crystal fiber four-wave mixing effect, which is used for converting the wavelength of an incident laser beam and generating a laser beam of a specific wavelength. Background technique [0002] All-optical wavelength converter is an important device to realize all-optical network. The wavelength conversion by the device can improve the utilization rate of the wavelength in the optical network, increase the flexibility and scalability of the network, and reduce the blocking rate of the network. The all-optical wavelength converter uses the nonlinear effect of some media to directly transfer the input optical signal to a new wavelength. According to different working principles, all-optical wavelength converters can be divided into two categories: wavelength converters based on the principle of optical modulation and wa...

AI Technical Summary

Problems solved by technology

Wavelength converters based on the principle of light modulation are only suitable for intensity-modulated signals, so they can only achieve limited transparency and cannot achieve strict transparency

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