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Two technologies used in active optical cable interfaces
Dec 01, 2018

    The photoelectric conversion interface of the active optical cable can be realized by two technologies. A detailed description of the two options will be given below.


    The first is to use silicon optical technology, also known as complementary metal oxide semiconductor (CMOS) process technology, optical signals can be converted and transmitted by current. It is converted into a light source to transmit a transmitted signal through an Edge Emitting Laser (EEL) current. A calibrated optical lens is used to polymerize 1310 nanometer (nm) wavelength light near the component. The EEL is composed of a wafer material that transmits signals in parallel to the component layer and the exit side via a high refractive index difference between the air and the wafer material.


    The second technique is a Vertical Cavity Surface Emitting Laser (VCSEL). The technology uses a laser array to introduce the outer electrons into a very thin area to simulate the quantum tunnel response, coupling the cable to transmit the signal, and the resulting current is introduced into the high reflectivity mirror and the distributed Bragg mirror; Bragg reflection The mirror can fix the signal in the medium and oscillate vertically in a direction perpendicular to the surface, allowing light to escape to the surface only through the wrapped circular beam output opening, forming a lower frequency reflection at the fiber wall.


    Vertical cavity surface emitting lasers (VCSELs) are now the preferred solution due to their low cost, low power consumption and high performance. Its low quasi-current characteristic facilitates the realization of a high-density laser array, and the light is emitted in the vertical direction. The small divergence angle and the circular symmetry of the far and near-field distribution make it easy to couple with the fiber without Complex and expensive beam shaping system.


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    Add:Dongfan Industrial Zone, Henghe Town, Cixi, Ningbo City, Zhejiang Province, China

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