CN2427908Y - Eliminated threshold value laser diode package - Google Patents
Eliminated threshold value laser diode package Download PDFInfo
- Publication number
- CN2427908Y CN2427908Y CN 00233985 CN00233985U CN2427908Y CN 2427908 Y CN2427908 Y CN 2427908Y CN 00233985 CN00233985 CN 00233985 CN 00233985 U CN00233985 U CN 00233985U CN 2427908 Y CN2427908 Y CN 2427908Y
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- laser
- ceramic insertion
- core
- sleeve
- insertion core
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Abstract
The utility model relates to an eliminated threshold value laser diode package comprising a laser tube core, a laser tower, a sleeve, a ceramic inserting core and a ceramic inserting core seat. The ceramic inserting core is arranged in a central hole of the ceramic inserting core seat. The laser tube core is arranged in the centre hole of the laser tower. The laser tower is arranged in a center hole of the sleeve. Moreover, relative positions between the sleeve and the laser tower can be regulated along axial direction. One end of the sleeve is connected with the end face of the ceramic inserting core seat. The end face of the laser tube core forms an inclined plane facing to the ceramic inserting core. Optical power current curves of the utility model are similar to curves of a luminous tube, the transmission power is big, and threshold current is small. Therefore, normal operations can not be affected. The utility model is suitable for optical fiber communication.
Description
The utility model relates to the electrooptical device that a kind of optical fiber communication is used, particularly a kind of threshold value laser diode module that disappears.
In fiber optic communication field, light source device is one of very important device, a kind of is as light source device with light-emitting diode, the operating current of light-emitting diode is generally about 60mA, the do not work influence of threshold current promptly produces light with its energising, and its advantage is that modulation drive circuit is simple, shortcoming is its frequency spectrum broad, job stability is relatively poor, and Output optical power is lower, generally below 100 μ W, another kind is as light source device with laser diode, generally about 20mA, Output optical power is very high for its operating current, generally greater than 100 μ W, frequency spectrum is narrower, better working stability, but less work threshold current is arranged, when being lower than this threshold current, to produce fluorescence, so its modulation drive circuit complexity.Said two devices respectively has its pluses and minuses, how to develop a kind of light source device and has both had the two advantage, again the two shortcoming is reduced to minimumly, is one of art technology problem.
The utility model purpose provides a kind of threshold value laser diode module that disappears, its similar luminous tube of luminous power current curve, and modulation drive circuit is simple, and threshold current can not influence its operate as normal, and luminous power output simultaneously can be up to 100 to 500 μ W.In addition, in the encapsulation of this laser diode, also can directly have the encapsulation of adapter, this modular construction can derive the adapter structure of various standards.
The purpose of this utility model realizes by following technical scheme.It comprises laser tube core, laser pagoda, sleeve, ceramic insertion core, ceramic insertion core seat, ceramic insertion core is positioned at the centre bore of ceramic insertion core seat, laser tube core is positioned at the centre bore of laser pagoda, this laser pagoda is positioned at the centre bore of sleeve, and can regulate the relative position between laser pagoda and this sleeve vertically, and an end of sleeve is connected with ceramic insertion core seat end face, laser tube core is concentric with ceramic insertion core, and the end face in the face of laser tube core of ceramic insertion core is the inclined-plane.On the ladder circle of ceramic insertion core seat, straight cover is housed, in straight cover endoporus, the porcelain bushing that is enclosed within on the ceramic insertion core is housed.Be equipped with monomode fiber on the described ceramic insertion core.It is the structure of out of focus coupling that the utility model is taked structure, in this laser diode structure, adopting the end face of ceramic insertion core is that the inclined-plane is to reduce to launch the degree that light directly enters tube core, keep this assembly working stability, regulate the axial location of this laser tube core during by assembling, make the focal position of laser tube core depart from out the tapered plane center of this ceramic insertion core to required separation distance, then with fixed-site, make the performance of this laser diode module reach instructions for use, it is higher promptly to become operating current, the laser diode of the very low negligible high luminous power of threshold current, both combined the advantage of light-emitting diode and laser diode, simultaneously the also variable FC that dissolves of this structure, the coupled structure of various adapters such as ST is come.
In sum, it is the ceramic insertion core on inclined-plane and the structure of adjustable focal length distance that the utility model adopts end face, and the encapsulating structure that has adapter, the modulation that makes the utility model reach existing optical diode drives simple advantage, the advantage that high-power, the good operating stability of laser diode is arranged again, and simple in structure, can directly have adapter.The utility model is suitable for using on the fiber optic communications devices, can replace existing light-emitting diode and laser diode, and the utility model also can act on the system that makes light source with semiconductor laser, on the navigation system of optic fiber gyroscope, navigation system, detection system.
Do concrete introduction with embodiment below.
Fig. 1 is a structural representation of the present utility model.
Fig. 2,3 is each luminous power current curve diagram.
Code name among the figure: 1 straight cover 2 porcelain bushings 3 laser pagodas 4 laser tube cores 5 sleeves 6 ceramic insertion core seats 7 ceramic insertion cores, 8 inclined-planes, 9 ladders circle
As Fig. 1, the utility model comprises laser tube core 4, laser pagoda 3, sleeve 5, ceramic insertion core 7, ceramic insertion core seat 6, this ceramic insertion core 7 is positioned at the centre bore of ceramic insertion core seat 6, laser tube core 4 is positioned at the centre bore of laser pagoda 3, this laser pagoda 3 is positioned at the centre bore of sleeve 5, and can regulate the relative position of 5 in this laser pagoda 3 and this sleeve vertically, to obtain required out of focus distance.One end of sleeve 5 is connected with ceramic insertion core seat 6 end faces, and laser tube core 4 is concentric with ceramic insertion core 7, and the end face in the face of laser tube core 4 of ceramic insertion core 7 is inclined-planes 8.On the ladder circle 9 of ceramic insertion core seat 6, straight cover 1 is housed, in straight cover 1 endoporus, the porcelain bushing 2 that is enclosed within on this ceramic insertion core 7 is housed.In each part, directly overlap 1, porcelain bushing 2, ceramic insertion core 7, ceramic insertion core seat 6 connect together under closely cooperating, and be and coaxial with sleeve 5, laser pagoda 3, laser tube core 4, ceramic insertion core 7 is the ceramic insertion cores that are equipped with monomode fiber.When assembling,, the two is fixed with glue and spot welding with under laser pagoda 3 and the laser tube core 4 coaxial situations.To manage leg 4A energising, then the lens 4B on the tube core 4 is luminous, guaranteeing under this sleeve 5 and the coaxial situation of other counterpart, move this laser pagoda 3 vertically, regulate the focusing distance of this laser tube core 4, when the central spot of emergent light focus on the inclined-plane 8 of ceramic insertion core 7, this moment its luminous power current curve such as Fig. 2, luminous power-current curve for typical laser diode, owing to the variation of threshold value, optical power change is very big, when drive current is 25mA when variations in temperature, power is 200 μ W in the time of T=25 ℃, is 50 μ W in the time of T=70 ℃.Regulate the relative position between laser pagoda 3 and the sleeve 5 vertically, the center on focus and this inclined-plane 8 is left carried out the out of focus coupling.As shown in Figure 3, curve B is the luminous power-current curve of typical laser, curve A is the disappear luminous power-current curve of threshold value laser diode of out of focus coupling, on curve A, this laser tube tube core luminous power when 60mA is between the 100-600 μ W, at this moment luminous power-current curve A is just very similar to luminous tube, but the coupling efficiency of threshold value laser tube is low owing to disappear, operating current is when 60mA, threshold value is here compared with operating current and can be ignored, thereby threshold value is also just very little to the influence of luminous power with variation of temperature.And in the laser of accurately coupling, because threshold value can compare with operating current 25mA and can not ignore, thus very big to the luminous power influence.The laser of coupling ratio of precision magnetic tape trailer fibre of the present utility model requires low, and technology is simple, and material, cost of labor are all lower.Straight cover 1 among Fig. 1 is the SC adapter, by changing the contour structures of straight cover 1, can assemble the fine output of various FC adapters or magnetic tape trailer.
Claims (3)
1, the threshold value laser diode module that disappears, it is characterized in that: it comprises laser tube core, laser pagoda, sleeve, ceramic insertion core, ceramic insertion core seat, ceramic insertion core is positioned at the centre bore of ceramic insertion core seat, laser tube core is positioned at the centre bore of laser pagoda, this laser pagoda is positioned at the centre bore of sleeve, and can regulate relative position between laser pagoda and this sleeve vertically, one end of sleeve is connected with ceramic insertion core seat end face, laser tube core is concentric with ceramic insertion core, and the end face in the face of laser tube core of ceramic insertion core is the inclined-plane.
2, according to the described threshold value laser diode module that disappears of claim 1, it is characterized in that: on the ladder circle of ceramic insertion core seat, straight cover is housed, in straight cover endoporus, the porcelain bushing that is enclosed within on the ceramic insertion core is housed.
3, according to claim 1 or the 2 described threshold value laser diode modules that disappear, it is characterized in that: described straight cover is the SC adapter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00233985 CN2427908Y (en) | 2000-05-10 | 2000-05-10 | Eliminated threshold value laser diode package |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00233985 CN2427908Y (en) | 2000-05-10 | 2000-05-10 | Eliminated threshold value laser diode package |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2427908Y true CN2427908Y (en) | 2001-04-25 |
Family
ID=33596198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00233985 Expired - Fee Related CN2427908Y (en) | 2000-05-10 | 2000-05-10 | Eliminated threshold value laser diode package |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2427908Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101030818B (en) * | 2007-02-14 | 2010-04-07 | 深圳市华润通光电有限公司 | Light-emitter assembly |
| CN113907945A (en) * | 2021-11-22 | 2022-01-11 | 黄梦圆 | A ophthalmology infrared appearance for eyesight is corrected |
-
2000
- 2000-05-10 CN CN 00233985 patent/CN2427908Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101030818B (en) * | 2007-02-14 | 2010-04-07 | 深圳市华润通光电有限公司 | Light-emitter assembly |
| CN113907945A (en) * | 2021-11-22 | 2022-01-11 | 黄梦圆 | A ophthalmology infrared appearance for eyesight is corrected |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |