Single-fiber bidirectional multimode wavelength division multiplexing photoelectric conversion device and manufacturing method

Abstract

The invention discloses a single-fiber bidirectional multimode wavelength division multiplexing photoelectric conversion device and a manufacturing method, and particularly relates to the technical field of information transmission, the device comprises a PCBA, and the PCBA comprises a circuit board, an optical splitter, a dielectric film filter, a laser and a photodiode; a conversion area is arranged on the circuit board; the area shape of the conversion area is an equilateral polygon, middle points of N + 1 edges of the equilateral polygon are sequentially connected according to the first turning direction to obtain an auxiliary polygon, and the auxiliary polygon is provided with N non-empty angles and an empty angle; a dielectric film filter is arranged on the non-empty corner; the laser and the photodiode are respectively arranged on two auxiliary extension lines penetrating through the dielectric film filter along a first rotating direction; and the optical splitter is arranged on an empty corner of the auxiliary polygon. The single-fiber bidirectional multimode wavelength division multiplexing photoelectric conversion device is based on a novel photoelectric bidirectional conversion structure constructed by a TFT (Thin Film Transistor), and a bidirectional wavelength division multiplexing function can be realized in a relatively compact volume.

Description

technical field [0001] The invention belongs to the technical field of information transmission, and in particular relates to a single-fiber bidirectional multi-mode wavelength division multiplexing photoelectric conversion device and a manufacturing method. Background technique [0002] With the increasing transmission capacity in the communication field, it is difficult for traditional transmission technology to meet the requirements of transmission capacity and transmission speed. Currently, data centers, business applications, and homes have higher and higher bandwidth requirements, and the applications are diverse. The photoelectric conversion device is the main component of the equipment to realize optical communication. In some applications, it is hoped that a single optical fiber can be used to achieve the same function. effective solution. [0003] Thin-film filter technology is the earliest wavelength-division multiplexing technology that has been applied since W...

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Problems solved by technology

[0005] In the direction of single-fiber bidirectional multimode wavelength division multiplexing, figure 1 One of the biggest problems in the TFT wavelength division multiplexing device with the structure shown is the positional interference between the photoelectric conversion receiver 112 and the photoelectric conversion transmitter, combined with the accompanying drawings figure 1 Schematic structure, due to the limitation of the position, the photoelectric conversion receiver 112 and the photoelectric conversion transmitter cannot be arranged together in a relatively compact manner. Therefore, in order to realize single-fiber bidirectional wavelength division multiplexing, two TFT wavelength division multiplexing devices need to be set They are respectively used for signal reception and signal transmission, which cannot meet the needs of micro-miniature devices in terms of volume; in addition, the number of components used in the two TFT wavelength division multiplexing devices is large, which is not conducive to reducing the TFT wavelength division multiplexing. Manufacturing cost of the device

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