Optical transceiver device for visible light optical fiber transmission
A technology of optical fiber transmission and optical transceiver, which is applied in the coupling of electromagnetic transceivers and optical waveguides, can solve the problems of reducing the transmission distance of optical signals, reducing the optical power of the sending end, and loss of visible light optical signals, so as to improve the optical fiber entering the fiber. Power coupling effect, improving the effect of low external quantum efficiency, and good power coupling effect into the fiber
Active Publication Date: 2014-10-29
SOUTHEAST UNIV
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However, the efficiency of the optical coupling method using ordinary lenses is limited. The visible light signal emitted by the RCLED is lost during the optical coupling process, resulting in a reduction in the optical power at the sending end of the transmission system and reducing the transmittable distance of the optical signal.
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[0031] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:
[0032] The idea of the present invention is: since the silica fiber has a smaller core diameter, the coupling efficiency of the light source into the silica fiber can be improved by designing and adopting a lens with a periodic structure instead of a lens with a common structure. Using cheap visible light RCLED as the light source, using silica fiber as the transmission medium, has lower transmission loss and smaller multi-mode dispersion, and obtains higher data transmission rate.
[0033] An optical transceiver for visible light optical fiber transmission, comprising an optical transmitter and an optical receiver, characterized in that the optical transmitter in the optical transceiver consists of a resonant cavity light-emitting diode 1, an optical transmitter drive circuit 2, and a periodic structure Composed of hemispherical lens 5, planar optica...
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The invention discloses a light transceiving device for visible light optical fiber transmission. The light transceiving device comprises a light transmitter and a light receiver, the light transmitter comprises a resonant cavity light-emitting diode, a light transmitter drive circuit, a hemispheric lens with a periodic structure, a planar optical waveguide coupler and an optical isolator, the light receiver comprises an optical receiving module and a limiting amplifier, the hemispheric lens with the periodic structure comprises a hemispheric lens body, and round air holes in array distribution are arranged on the hemispheric lens body. The operating wavelength of the visible light optical fiber transmission is 650nm, and a single-mode quartz optical fiber serves as a transmission medium. Incident fiber optical power coupling effect can be more effectively improved by the aid of the hemispheric lens with the periodic structure. When visible light is transmitted in the quartz optical fiber, few transmission modes are excited for transmission, and accordingly multimode dispersion and interference can be suppressed.
Description
technical field [0001] The invention relates to the technical field of optical fiber communication, in particular to an optical transceiver device for visible light optical fiber transmission, including an optical transmitter and an optical receiver. Background technique [0002] With the popularity of high-bandwidth applications such as high-definition video and video conferencing, people have higher and higher requirements for network bandwidth. In the current fiber-to-the-home (FTTH) wiring, quartz single-mode optical fiber is generally used to connect to the corridor or the wiring box on each floor, and in the horizontal direction of the floor, copper cables are generally used for the "last hundred meters" intervention . However, copper cables are gradually being replaced by optical fibers due to their shortcomings such as inability to support high-speed transmission, high cost, and poor anti-electromagnetic interference. [0003] Plastic optical fiber, also known as p...
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IPC IPC(8): G02B6/42H04B10/40
Inventor 孙小菡周谞柏宁丰陈翰邹宁波朱铖
Owner SOUTHEAST UNIV