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A single-fiber bidirectional converter structure

A single-fiber bidirectional, converter technology, applied in the field of optical communication devices, can solve the problems of unfavorable product upgrade and development, occupying module package size, etc., and achieve the effects of saving fiber consumption, rapid upgrade, and low cost

Active Publication Date: 2020-09-25
福建海创光电技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of BIDI device usually integrates an optical circulator structure inside the module, which takes up valuable module package size and is not conducive to product upgrade and development.

Method used

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  • A single-fiber bidirectional converter structure
  • A single-fiber bidirectional converter structure
  • A single-fiber bidirectional converter structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as Figure 2 to Figure 4 As shown in one, this embodiment includes a circulator and a packaging case 1, the circulator is a three-port optical fiber circulator, which is fixed in the packaging case 1, and the side of the packaging case 1 is provided with three Internally communicated and corresponding to the three ports of the circulator one-to-one with the corresponding signal ports (ie port1, port2, port3).

[0031] Wherein, the circulator specifically includes a first PBS prism 2, an optical rotation mechanism 3, and a second PBS prism 4 fixedly connected in sequence; The first polarizing beam-splitting film 21 of the upper and lower parts; the second PBS prism 4 is provided with a second polarizing beam-splitting film 41 that divides its connection surface with the optical rotation mechanism 3 into upper and lower parts; the upper part of the first PBS prism 2 Both the end face and the lower end face are coated with a high-reflection film, and the lower end fa...

Embodiment 2

[0036] Such as Figure 5 to Figure 7As shown in one, this embodiment is substantially the same as Embodiment 1, the difference is that the circulator includes a reflective prism 5 and a first PBS prism 2, an optical rotation mechanism 3, and a second PBS prism fixedly connected in sequence 4; the first PBS prism 2 is provided with a first polarization splitting film 21 that divides its incident surface and outgoing surface into upper and lower parts; the second PBS prism 4 is provided with a light rotation mechanism 3 The connection surface is divided into the second polarization splitting film 41 of upper and lower two parts; A high-transparency film is provided and the reflective prism 5 is opposite to the lower end face of the first PBS prism 2; two of the signal ports (port1, port2, port3) (port1, port3) are respectively incident with the first PBS prism 2 The part on the surface corresponds to and faces the reflective prism 5 one by one, and the other signal port (port2)...

Embodiment 3

[0042] Such as Figure 8 to Figure 10 One shows that this embodiment is substantially the same as Embodiment 2, the difference is that the signal port port2 is replaced by a bidirectional signal transmission optical fiber 6, and other structures are the same as Embodiment 2 and Figure 8 and Figure 9 The corresponding optical paths are all the same, and will not be repeated here. Figure 10 It is a schematic schematic diagram of the implementation of this embodiment, where the signal ports port1 and port3 are public port structures.

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Abstract

The invention discloses a single-fiber bidirectional converter structure. The single-fiber bidirectional converter structure comprises a circulator and a package housing; the circulator is a three-port optical fiber circulator and is fixed in the package housing; and the side surface of the package housing is provided with three signal ports which are communicated with the internal of the packagehousing and are in one-to-one correspondence with the three ports of the circulator. With the single-fiber bidirectional converter structure of the invention adopted, the structural design of a bidirectional optical transceiver in optical communication can be simplified, low cost can be realized, and quickly-upgraded single-fiber bidirectional application is realized; with the idea of the integration of the core components of the circulator and a connector adopted, optical fiber consumption can be decreased effectively by half; the spacing of two fiber ports can be flexibly customized, so thatdifferent specifications can be satisfied; and the single-fiber bidirectional converter structure is also particularly suitable for the optic fiber connection upgrade management of places such as data centers and machine rooms where dual-fiber bi-directional receiving and dispatching modules are intensively applied.

Description

technical field [0001] The invention relates to the field of optical communication devices, in particular to a single-fiber bidirectional converter structure. Background technique [0002] Bidirectional transceiver is the basic structure of the optical communication module (transceiver), but in the conventional structure, the signal sending port and the signal receiving port are separated into two ports (such as figure 1 shown). Since the transmission and reception are two ports, it is necessary to use two input and two output optical fibers. In places where transceivers are intensively used, such as data centers or computer rooms, there will be too many light beams, which will affect management and increase costs. [0003] Considering the above-mentioned problems, the design of BIDI (single-fiber bi-directional) is also realized in the transceivers of some manufacturers. However, this type of BIDI device usually integrates an optical circulator structure inside the modul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/42
CPCG02B6/4214G02B6/4255G02B6/4287
Inventor 凌吉武张哨峰黄兴端胡豪成
Owner 福建海创光电技术股份有限公司