Erbium fiber uniform heating box for amplifier

Abstract

The utility model relates to an amplifier erbium fiber uniform heating box, and aims to solve the problem that in the electric heating process of erbium fibers in an amplifier, the erbium fibers can also heat to cause the accumulation and non-uniform dispersion of heat energy, a rib plate is additionally arranged in an amplifier base, the rib plate plays a role of a heat conduction part, and the heat energy is quickly transferred to other positions of the amplifier heating box. The conditions of energy accumulation and local temperature rise caused by excessive erbium fiber bundles are effectively avoided, further reduction of local temperature difference in the whole amplifier is ensured, and normal use of the communication function of the amplifier is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of amplifiers, in particular to an amplifier erbium fiber uniform heating box. Background Art

[0002] In the amplifier, the L++ band erbium fiber of the L++EDFA erbium fiber amplifier is extremely sensitive to temperature. In order to meet the product performance of EDFA under various ambient temperatures, it needs to be heated to a constant temperature to ensure its stable performance. It is required to work at a constant temperature (+-0.5 degrees), and the temperature consistency of the entire section of erbium fiber is required to be high. Once a large temperature difference occurs on a certain section of erbium fiber, the performance of the entire product will deviate, and in severe cases, it will cause communication system problems.

[0003] The temperature uniformity of the erbium fiber in the prior art is poor, and the temperature difference between each section of the erbium fiber is large, which easily causes the problem of product failure. Utility Model Content

[0004] In view of the shortcomings of the above-mentioned existing production technology, the applicant provides an amplifier erbium fiber uniform heating box with a reasonable structure. By adding rib plates, the heat energy provided by the erbium fiber itself and the heating circuit is evenly transferred to solve the heat accumulation problem of the amplifier.

[0005] The technical solution adopted by the utility model is as follows:

[0006] An amplifier erbium fiber uniform heating box comprises a base and a cover plate. A heating plate is arranged in the accommodation space formed by the base and the cover plate. A fiber coiling groove is arranged on the inner circumference of the base. At least one circle of ribs are arranged in the fiber coiling groove. The ribs are arranged coaxially with the fiber coiling groove. The erbium fiber is arranged in a fiber splitting groove separated by the ribs in the fiber coiling groove.

[0007] Heat is transferred between the rib plate, the erbium fiber and the heating box.

[0008] As a further improvement of the above technical solution:

[0009] A single rib plate is annular and has a notch reserved therein for allowing the erbium fiber to be introduced into the adjacent fiber splitting slot.

[0010] The rib plate and the base are integrally formed metal parts or welded metal parts.

[0011] The axial width of each circle of ribs is the same as the groove depth of the fiber disc groove, and both are in contact with the cover plate.

[0012] The diameters of the erbium fiber bundles in the fiber splitting slots are different.

[0013] The temperatures inside the fiber splitting slots are different.

[0014] The temperature difference between two adjacent sections of erbium fiber ranges from 2 to 5°C.

[0015] The temperature difference of different parts on the same section of erbium fiber is less than 1°C.

[0016] The beneficial effects of the utility model are as follows:

[0017] The utility model has a compact and reasonable structure, has little modification to the original structure, and has no structural influence on components other than the erbium fiber.

[0018] The utility model adds a rib plate with the same height as the groove wall in the fiber coiling groove, divides the fiber coiling groove into two or more fiber splitting grooves through the rib plate, divides an original bundle of erbium fibers into multiple bundles of erbium fibers, and places them in different fiber splitting grooves.

[0019] In this way, when the heating plate starts to heat up and the erbium fiber itself generates heat, the heat energy can be quickly received by the metal rib plate, and then transmitted by the rib plate to the base and cover plate in contact with it, and the heat energy is quickly transferred to other positions of the heating box to avoid heat accumulation problems, thereby ensuring the temperature consistency of each section of the erbium fiber and the reliability of product performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the amplifier structure of the utility model, in which a cover plate on one side is hidden.

[0021] Figure 2 It is a schematic diagram of the amplifier structure of the utility model from another perspective.

[0022] Figure 3 It is a schematic diagram of the explosion of the heating box of the utility model.

[0023] Including: 1. Base; 2. Fiber tray; 3. Heating plate; 4. Cover plate;

[0024] 201, rib plate; 202, notch; 203, fiber separation slot;

[0025] 301. Heating plate reinforcement plate. DETAILED DESCRIPTION

[0026] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0027] like Figure 1-Figure 3 As shown, the amplifier erbium fiber uniform heating box of this embodiment includes a base 1 and a cover plate 4. A heating plate 3 is arranged in the accommodation space formed by the base 1 and the cover plate 4. A fiber coiling groove 2 is arranged on the inner circumference of the base 1. At least one circle of ribs 201 is arranged in the fiber coiling groove 2. The ribs 201 are coaxially arranged with the fiber coiling groove 2. The erbium fiber is arranged in a fiber splitting groove 203 separated by the ribs 201 in the fiber coiling groove 2.

[0028] Heat is transferred between the rib plate 201, the erbium fiber and the heating box.

[0029] A single rib plate 201 is annular and has a notch 202 reserved therein for allowing the erbium fiber to be introduced into an adjacent fiber splitting slot 203 .

[0030] The rib plate 201 and the base 1 are integrally formed metal parts or welded metal parts.

[0031] The axial width of each circle of ribs 201 is the same as the groove depth of the fiber coil groove 2 , and all of them are in contact with the cover plate 4 .

[0032] The diameters of the erbium fiber bundles in the fiber splitting slot 203 are different.

[0033] The temperatures inside the plurality of fiber splitting slots 203 are different.

[0034] The temperature difference between two adjacent sections of erbium fiber ranges from 2 to 5°C.

[0035] The temperature difference of different parts on the same section of erbium fiber is less than 1°C.

[0036] The specific structure and heat dissipation principle of the utility model are as follows:

[0037] like Figure 1 and Figure 2 As shown, a heating box is arranged inside the amplifier, and the heating box includes a base 1 and a cover plate 4 made of metal. A fiber coiling groove 2 is formed at a circumferential position of the base 1, and at least one circle of ribs 201 is coaxially arranged in the fiber coiling groove 2. The ribs 201 divide the fiber coiling groove 2 into at least two fiber splitting grooves 203. A heating plate 3 and a reinforcing plate for the heating plate 3 are also arranged in the base 1 and the cover plate 4.

[0038] Combined with reference Figure 3 After the fiber tray slot 2 is divided into a plurality of fiber splitting slots 203, the erbium fiber is divided into a plurality of bundles, each bundle of erbium fiber falls into a fiber splitting slot 203, and the heating plate 3 heats different sections of the erbium fiber in different regions. During the heating process, the heat energy generated by the heating plate 3 and the heat energy generated by the erbium fiber itself are quickly transferred to other positions of the heating box, such as the metal base 1 and the metal cover plate 4, through the rib plate 201, effectively avoiding the energy accumulation caused by too many erbium fiber bundles, thereby reducing the temperature rise and weakening the gradient temperature difference between adjacent erbium fibers.

[0039] In one embodiment of the present invention, the base 1 is made of metal aluminum or metal copper, which has good thermal conductivity.

[0040] In this solution, the number of ribs 201 is affected by factors such as the designed optical path structure, the power consumption of the erbium fiber, and the physical size of the product. For example, if several sections of erbium fiber are used in the optical path structure, the number of ribs 201 should match the number of sections of the erbium fiber; the greater the power consumption of the erbium fiber, the more ribs 201 can be considered; the larger the physical size of the product, the more ribs 201 can be considered.

[0041] According to the heat generated, the principle of distributing the erbium fiber is to minimize the temperature difference of different sections of the erbium fiber as much as possible, that is, to ensure that the temperature difference of the entire erbium fiber box is as small as possible to ensure the temperature uniformity required by the production line. If the self-heating heat of the erbium fiber at point A is high, it is placed relatively far away from the outer circle of the heating plate 3. On the contrary, if the self-heating heat of the erbium fiber at this point is low, it is placed close to the inner circle of the heating plate 3.

[0042] By comparison, it can be clearly seen that when a single-beam erbium fiber is used for heating, the thermal image has a temperature difference phenomenon with local high temperature and local significantly low temperature, which is manifested as uneven bright areas in the thermal image. When a split-beam erbium fiber is used for heating, the bright areas of the thermal image present uniform circular rings, that is, the heating is uniform, the temperature difference of a single section of erbium fiber is small, and the temperature difference of adjacent sections of erbium fiber is within a controllable range. It can be concluded that this solution can indeed effectively improve the heat accumulation phenomenon inside the amplifier, thereby effectively improving the performance of the amplifier.

[0043] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. An amplifier erbium fiber uniform heating box, comprising a base (1) and a cover plate (4), wherein a heating plate (3) is arranged in a receiving space formed by the base (1) and the cover plate (4), and characterized in that: A fiber coiling groove (2) is arranged on the inner circumference of the base (1), at least one circle of ribs (201) is arranged in the fiber coiling groove (2), the ribs (201) and the fiber coiling groove (2) are arranged coaxially, and the erbium fiber is arranged in a fiber separation groove (203) separated by the ribs (201) in the fiber coiling groove (2). Heat is transferred between the rib plate (201), the erbium fiber and the heating box.

2. The amplifier erbium fiber uniform heating box according to claim 1, characterized in that: The single rib plate (201) is annular and has a notch (202) reserved therein for allowing the erbium fiber to be introduced into the adjacent fiber splitting slot (203).

3. The amplifier erbium fiber uniform heating box according to claim 2, characterized in that: The rib plate (201) and the base (1) are integrally formed metal parts or welded metal parts.

4. The amplifier erbium fiber uniform heating box according to claim 2, characterized in that: The axial width of each circle of rib plates (201) is the same as the groove depth of the coil fiber groove (2), and both are in contact with the cover plate (4).

5. The amplifier erbium fiber uniform heating box according to claim 1, characterized in that: The diameters of the erbium fiber bundles in the fiber splitting slot (203) are different.

6. The amplifier erbium fiber uniform heating box according to claim 5, characterized in that: The temperatures inside the plurality of fiber splitting slots (203) are different.

7. The amplifier erbium fiber uniform heating box according to claim 6, characterized in that: The temperature difference between two adjacent sections of erbium fiber ranges from 2 to 5°C.

8. The amplifier erbium fiber uniform heating box according to claim 6, characterized in that: The temperature difference of different parts on the same section of erbium fiber is less than 1°C.

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