Propose A New Type Of Connector Based On Dual-core Optical Cable
The main purpose of optical connectors is to realize optical fiber connection. Researchers have proposed a new type of connector based on dual-core fiber. Connect the axisymmetric non-coaxial twin-core fiber (TCF) to the asymmetric twin-core fiber (DPCF) where the phase velocities of the two pairs of cores are inconsistent, and the DPCF and the twin-core fiber at the far end are connected to the two single-core fibers respectively. Mode fiber connection. This optical connector has a good application prospect due to the characteristics of low loss and low signal crosstalk.
optical fiber amplifier
The erbium-doped fiber amplifier based on dual-core fiber can automatically provide channel power equalization, ignoring the loss change between amplifiers and the transient cross-saturation of the signal. The device mainly utilizes the spatial separation of channels and the saturation characteristics of erbium ions and power. In the dual-core erbium-doped fiber equalization amplifier, both cores are Er3 + doped. The researchers proposed a dual-core erbium-doped fiber amplifier with flat gain. This amplifier can achieve output power balance to a certain extent, which is suitable for the requirements of multi-channel multi-stage amplification and wavelength division multiplexing optical fiber systems and networks in the development of future communications.
The role of the optical add/drop multiplexer is to upload and download the signal node, and is an important part of the long-distance backbone network and the metropolitan area network. Researchers have proposed an add/drop multiplexer based on dual-core fiber. After writing fiber gratings of equal length in the two cores, input signal light of different wavelengths from the A1 end, and the light enters the grating section after mutual coupling in the non-grating area, and uses the Bragg grating to reflect the optical signal of a specific wavelength from the B1 end Output, while the remaining signals continue to be transmitted forward, so as to achieve the function of downloading signals. Similarly, input in the opposite direction can realize the signal upload function.
