CN217034328U - Single-fiber four-way optical device and optical power meter - Google Patents
Single-fiber four-way optical device and optical power meter Download PDFInfo
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- CN217034328U CN217034328U CN202121236942.1U CN202121236942U CN217034328U CN 217034328 U CN217034328 U CN 217034328U CN 202121236942 U CN202121236942 U CN 202121236942U CN 217034328 U CN217034328 U CN 217034328U
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Abstract
The application discloses a single-fiber four-way optical device and an optical power meter. A single-fiber four-way optical device includes: the optical device shell and the filter component; the optical device shell is provided with an inner cavity, an incident light channel and four emergent light channels, wherein the incident light channel and the four emergent light channels are communicated with the inner cavity; the light inlet channel is used for injecting light with the wavelength of 1260nm to 1690nm to the filtering component, and the light with the wavelength of 1260nm to 1670nm is emitted from the first light outlet channel after being semi-reflected by the first filter plate; light with the wavelength of 1490nm is transmitted through the first filter plate, then enters the second filter plate, is reflected by the second filter plate and is emitted from the second light emitting channel; light with the wavelength of 1550nm is transmitted by the first filter and the second filter in sequence, then is incident on the third filter, is reflected to the fourth filter through the third filter, and is reflected to the third light-emitting channel through the fourth filter; and light with the wavelength of 1577nm is transmitted through the first filter, the second filter and the third filter in sequence and then emitted out of the fourth light emitting channel. The method can compatibly receive communication wavelengths of 2.5Gbit/s and 10 Gbit/s.
Description
Technical Field
The application relates to the technical field of optical communication, in particular to a single-fiber four-way optical device and an optical power meter.
Background
An Optical Power Meter (OPM) refers to an instrument used to measure the absolute Optical Power or the relative loss of Optical Power through a length of Optical fiber. In fiber optic systems, measuring optical power is the most fundamental requirement, while optical power meters are the most common measuring instruments. An optical power meter can evaluate the performance of the optical end equipment by measuring the absolute power of the transmitter or the optical network. When the optical power meter is used in combination with a stable light source, the connection loss can be measured, the continuity can be checked, and the evaluation of the transmission quality of the optical fiber link can be facilitated.
The optical power meter in the prior art is designed to meet the measurement requirement of the optical fiber network with the 2.5Gbit/s rate, and can only receive the light with the wavelength of 1490nm and 1310nm and measure the power of the light with the wavelength of 1490nm and 1310 nm.
With the development of optical communication technology, the speed of the existing optical fiber network steps from 2.5Gbit/s to 10 Gbit/s. In the optical fiber network with the speed of 10Gbit/s, the adopted laser comprises the light with the wavelengths of 1260nm, 1490nm, 1550nm and 1577nm, and the wavelengths are correspondingly increased by 1550nm and 1577 nm. The optical power meter designed for the requirement of the 2.5Gbit/s optical fiber network cannot measure the light with the wavelength of 1550nm and the wavelength of 1577nm added in the 10Gbit/s optical fiber network, and cannot meet the requirement of measuring the optical power of the 10Gbit/s optical fiber network.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem that products with different wavelengths of 2.5Gbit/s and 10Gbit/s rates need to be compatible in the related technology, the application provides a single-fiber four-way optical device and an optical power meter.
In a first aspect, the present application provides a single-fiber four-way optical device, including: an optical device housing and a filter assembly;
the optical device shell is provided with an inner cavity, and an incident light channel, a first light-emitting channel, a second light-emitting channel, a third light-emitting channel and a fourth light-emitting channel which are communicated with the inner cavity;
the filtering component is accommodated in the inner cavity and comprises a first filtering piece, a second filtering piece, a third filtering piece and a fourth filtering piece;
the light inlet channel is used for injecting light with the wavelength of 1260nm to 1690nm to the filtering component, and the light with the wavelength of 1260nm to 1670nm is emitted from the first light outlet channel after being semi-reflected by the first filter plate;
light with the wavelength of 1490nm is transmitted by the first filter, then enters the second filter, is reflected by the second filter and is emitted from the second light-emitting channel;
light with the wavelength of 1550nm is transmitted through the first filter and the second filter in sequence, then enters the third filter, is reflected to the fourth filter through the third filter, and is reflected to the third light-emitting channel through the fourth filter;
and light with the wavelength of 1577nm sequentially passes through the first filter, the second filter and the third filter and then is emitted from the fourth light-emitting channel.
Optionally, light with a wavelength of 1260nm to 1690nm is incident from the light incident channel to the filter assembly in a first direction, and light with a wavelength of 1260nm to 1690nm is emitted from the first light emitting channel in a second direction;
the first direction and the second direction are perpendicular to each other; a first included angle a is formed between the first filter plate and the first direction, and the value range of the first included angle a is 44 degrees, a is more than 44 degrees and less than 46 degrees.
Optionally, light with a wavelength of 1260nm to 1690nm is incident from the light entrance channel to the filter assembly in a first direction, and light with a wavelength of 1490nm is emitted from the second light exit channel in a third direction; the first direction and the third direction are perpendicular to each other;
and a second included angle b is formed between the second filter plate and the first direction, and the value range of the second included angle b is more than 44 degrees and less than 46 degrees.
Optionally, light with a wavelength of 1260nm to 1690nm enters the filter assembly from the light entrance channel in a first direction, and light with a wavelength of 1550nm exits from the third light exit channel in a fourth direction; the first direction and the fourth direction are perpendicular to each other;
a third included angle c is formed between the third filter plate and the first direction, and a fourth included angle d is formed between the fourth filter plate and the fourth direction; the value range of the third included angle c is more than or equal to 10 degrees and less than or equal to 22 degrees, and the value range of the fourth included angle d is more than or equal to 32 degrees and less than or equal to 35 degrees.
Optionally, a sum of the third included angle c and the fourth included angle d ranges from greater than 44 ° to less than 46 °.
Optionally, the single-fiber four-way optical device still includes four optical receiving pieces, optical receiving piece all is used for receiving optical signal, four optical receiving pieces set up respectively first light-emitting channel, second light-emitting channel, third light-emitting channel and on the fourth light-emitting channel.
Optionally, the light receiving element is packaged in a transistor shape.
Optionally, the light incident channel is aligned with the third light emergent channel.
Optionally, the filter assembly is located between the light entrance channel and the third light exit channel, and the fourth filter is located between the second filter and the third filter.
In a second aspect, the present application provides an optical power meter, including the single-fiber four-way optical device described above.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
according to the single-fiber four-way optical device provided by the embodiment of the application, light with the wavelength of 1260nm to 1690nm enters the light inlet channel, after the light is semi-reflected by the first filter, the part of the light with the wavelength of 1260nm to 1690nm exits from the first light outlet channel, and the part of the light is transmitted by the first filter and then enters the second filter; light with the wavelength of 1490nm is emitted from the second light-emitting channel after being reflected by the second filter; light with the wavelength of 1550nm is transmitted by the second filter, then enters the third filter, is reflected by the third filter, enters the fourth filter, is reflected by the fourth filter, and is emitted from the third light-emitting channel; and light with the wavelength of 1577nm is emitted from the fourth light-emitting channel after being transmitted by the first filter, the second filter and the third filter in sequence. Therefore, the single-fiber four-way optical device can process light with a plurality of different wavelengths, can receive light with the wavelength of 1550nm and 1577nm, and further meets the measurement requirement of a 10Gbit/s rate optical fiber network.
The optical power meter provided by the embodiment of the application comprises the single-fiber four-way optical device. The single-fiber four-way optical device is applied to the optical power meter, so that the number of receiving wavelengths of the optical power meter is increased, and the single-fiber four-way optical device is suitable for processing optical fiber networks with the speed of 2.5Gbit/s and 10 Gbit/s.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a single-fiber four-way optical device according to an embodiment of the present application;
fig. 2 is a front view of a single-fiber four-way optical device provided in an embodiment of the present application;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
fig. 4 is a schematic optical path diagram of a single-fiber four-way optical device according to an embodiment of the present application.
100. A single fiber four-way optical device; 110. a light device housing; 120. a filtering component; 121. a first filter; 122. a second filter; 123. a third filter; 124. a fourth filter;
131. a first light receiving element; 132. a second light receiving element; 133. a third light receiving element; 134. and a fourth light receiving element.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making creative efforts shall fall within the protection scope of the present application.
Referring to fig. 1 to4, an embodiment of the present application provides a single-fiber four-directional optical device 100, including: optics housing 110 and filter assembly 120.
The optical device housing 110 has an inner cavity, and an incident light channel, a first light-emitting channel, a second light-emitting channel, a third light-emitting channel, and a fourth light-emitting channel which are communicated with the inner cavity; the filter assembly 120 is accommodated in the inner cavity, and the filter assembly 120 includes a first filter 121, a second filter 122, a third filter 123 and a fourth filter 124; the light inlet channel is used for injecting light with the wavelength of 1260nm to 1690nm to the filter component 120, and the light with the wavelength of 1260nm to 1670nm is emitted from the first light outlet channel after being semi-reflected by the first filter 121; light with the wavelength of 1490nm is transmitted through the first filter 121, then is incident on the second filter 122, is reflected by the second filter 122, and is emitted from the second light-emitting channel; light with the wavelength of 1550nm is transmitted through the first filter 121 and the second filter 122 in sequence, then enters the third filter 123, is reflected to the fourth filter 124 through the third filter 123, and is reflected to the third light-emitting channel through the fourth filter 124; light with the wavelength of 1577nm sequentially passes through the first filter 121, the second filter 122 and the third filter 123, and then is emitted from the fourth light-emitting channel.
With the single-fiber four-way optical device 100 provided in the embodiment of the present application, light with a wavelength of 1260nm to 1690nm is incident from the light incident channel, and after being semi-reflected by the first filter 121, part of the light with a wavelength of 1260nm to 1690nm is emitted from the first light emitting channel, and part of the light is transmitted from the first filter 121 and then is incident on the second filter 122; light with the wavelength of 1490nm is reflected by the second filter 122 and then emitted from the second light-emitting channel; light with the wavelength of 1550nm is transmitted by the second filter 122, then enters the third filter 123, is reflected by the third filter 123, enters the fourth filter 124, is reflected by the fourth filter 124, and exits from the third light exit channel; the light with a wavelength of 1577nm is emitted from the fourth light emitting channel after being transmitted through the first filter 121, the second filter 122 and the third filter 123 in sequence. Like this, through setting up first filter 121, second filter 122, third filter 123, and fourth filter 124, and correspond four filters and set up first light-emitting channel respectively, the second light-emitting channel, the third light-emitting channel, and fourth light-emitting channel, thereby make single fiber quadriversal optical device 100 can handle the light of a plurality of different wavelengths, can receive the light that wavelength is 1550nm and 1577nm, and then adapt to 10Gbit/s rate optical network's measurement demand, can be used for the compatible communication wavelength who receives 2.5Gbit/s and 10Gbit/s rate.
Specifically, the light incident from the light incident channel is full-wavelength light, and the wavelength ranges from 1260nm to 1670 nm. First filter 121 is half-reflective first filter 121, and when the light with wavelength 1260nm to 1670nm is incident on first filter 121, part of the light is reflected by first filter 121 and emitted from first light-emitting channel, and part of the light is transmitted from first filter 121 and incident on second filter 122.
The second filter 122, the third filter 123 and the fourth filter 124 can respectively reflect or transmit light with a specific wavelength, for example, the second filter 122 can reflect light with a wavelength of 1490nm, and the third filter 123 and the fourth filter 124 can reflect light with a wavelength of 1550 nm. The transmission of the light with specific wavelength and the reflection of the light with specific wavelength are determined by the plated films on the second filter 122, the third filter 123 and the fourth filter 124, respectively. By adjusting the plated films of the second filter 122, the third filter 123 and the fourth filter 124, light of a specific wavelength is allowed to pass through.
Referring to fig. 4, a first direction H is a direction of an arrow H, a second direction J is a direction of an arrow J, a third direction K is a direction of an arrow K, and a fourth direction L is a direction of an arrow L. Light with the wavelength of 1260nm to 1690nm enters the filter assembly 120 from the light inlet channel in the first direction H, and light with the wavelength of 1260nm to 1690nm exits from the first light outlet channel in the second direction J; the first direction H and the second direction J are perpendicular to each other; a first included angle a is formed between the first filter segment 121 and the first direction H, and the value range of the first included angle a is greater than 44 degrees and less than 46 degrees.
The first direction H and the second direction J are perpendicular to each other, so that light with a wavelength of 1260nm to 1690nm is incident to the first light emitting channel in the direction perpendicular to the second direction J after being reflected by the first filter 121, and the loss of optical power is reduced to the minimum. And a first included angle a is formed between the first filter 121 and the first direction H, and the value range of the first included angle a is larger than 44 degrees and smaller than 46 degrees. After ensuring that the first filter 121 semi-reflects the light with the wavelength of 1260nm to 1690nm, the light can be incident to the first light-emitting channel in the second direction J. In a specific embodiment, the value of the first included angle a may be 45 °, and there is a certain offset when the angle between the first filter segment 121 and the first direction H is actually adjusted. The value of the first included angle a allows for a tolerance within 45 ° ± 0.5 °.
With continued reference to fig. 4, light with a wavelength of 1260nm to 1690nm enters the filter assembly 120 from the light entrance channel in the first direction H, and after the light with a wavelength of 1260nm to 1690nm is transmitted by the first filter 121, the light with a wavelength of 1490nm is reflected by the second filter 122 and exits from the second light exit channel in the third direction K; the first direction H and the third direction K are perpendicular to each other; a second included angle b is formed between the second filter 122 and the first direction H, and the value range of the second included angle b is 44 degrees and more than b and less than 46 degrees.
The first direction H and the third direction K are perpendicular to each other, so that light with a wavelength of 1490nm is reflected by the second filter 122 and then enters the second light emitting channel at an angle perpendicular to the first direction H, and further, the loss of optical power is reduced to the minimum. And a second included angle b is formed between the second filter 122 and the first direction H, and the value range of the second included angle b is more than 44 degrees and less than b and less than 46 degrees. After the second filter 122 is ensured to reflect the light with the wavelength of 1490nm, the light can enter the second light-emitting channel perpendicular to the first direction H.
In a specific embodiment, the value of the second included angle b may be 45 °, and of course, when the angle between the second filter 122 and the first direction H is actually adjusted, there is a certain deviation. The value of the second included angle b allows a tolerance within 45 ° ± 0.5 °.
Light with the wavelength of 1550nm is emitted from the third light-emitting channel in a fourth direction L; the first direction H and the fourth direction L are mutually perpendicular; a third included angle c is formed between the third filter 123 and the first direction H, and a fourth included angle d is formed between the fourth filter 124 and the fourth direction L; the value range of the third included angle c is more than or equal to 10 degrees and less than or equal to 22 degrees, and the value range of the fourth included angle d is more than or equal to 32 degrees and less than or equal to 35 degrees.
Light with the wavelength of 1550nm is emitted from the third light-emitting channel in the fourth direction L after being transmitted by the first filter 121, transmitted by the second filter 122, reflected by the third filter 123, and reflected by the fourth filter 124. After passing through the first filter 121, the second filter 122, the third filter 123 and the fourth filter 124 in sequence, the light with a wavelength of 1577nm is emitted from the fourth light-emitting channel in the first direction H. The first direction H is perpendicular to the second direction J, the first direction H is perpendicular to the third direction K, and the first direction H is perpendicular to the fourth direction L. Therefore, the light emitted from the first light-emitting channel and the second light-emitting channel and the light incident from the light-incident channel form a basically vertical angle, and the power loss of the light path is reduced.
A third included angle c is formed between the third filter 123 and the first direction H, and a fourth included angle d is formed between the fourth filter 124 and the fourth direction L; the value range of the third included angle c is more than or equal to 10 degrees and less than or equal to 22 degrees, and the value range of the fourth included angle d is more than or equal to 32 degrees and less than or equal to 35 degrees.
The value of the third included angle c cannot be set too large, and the value range of the third included angle c is smaller than or equal to 22 degrees, so that the interference of the third filter 123 on incident light can be avoided. In a specific embodiment, the third included angle c may be set to 13 °, so that the interference rejection capability of the optical path may be improved.
The numerical value of the fourth included angle d cannot be too small, and the value range of the fourth included angle d is larger than or equal to 32 degrees, so that the interference of the fourth filter 124 on incident light can be avoided, and light with the wavelength of 1550nm can be reflected by the third filter 123 and then enters the fourth filter 124.
The sum of the third angle c and the fourth angle d ranges from greater than 44 ° to less than 46 °. In this way, light with a wavelength of 1270nm can be reflected by the third filter 123 and the fourth filter 124 to be emitted from the first light emitting channel in a direction perpendicular to the first direction H, and thus, the optical path loss is reduced. It should be noted that "perpendicular" as referred to herein is substantially perpendicular, and not absolute perpendicular in the mathematical sense, i.e., allowing for some tolerance.
In a specific embodiment, the sum of the values of the third angle c and the fourth angle d is 45 °. Of course, when the angle value of the sum of the values of the third included angle c and the fourth included angle d is actually adjusted, a certain deviation exists. The sum of the values of the first angle a and the second angle b allows for a tolerance within 45 ° ± 0.5 °.
The single-fiber four-way optical device 100 further includes four light receiving elements, the light receiving elements are all used for receiving optical signals, and the four light receiving elements are respectively arranged on the first light emitting channel, the second light emitting channel, the third light emitting channel and the fourth light emitting channel. The four light receiving elements are a first light receiving element 131, a second light receiving element 132, a third light receiving element 133, and a fourth light receiving element 134, respectively.
The first light receiving element 131 is disposed on the first light exiting channel, the second light receiving element 132 is disposed on the second light exiting channel, the third light receiving element 133 is disposed on the third light exiting channel, and the fourth light receiving element 134 is disposed on the fourth light exiting channel.
The light receiving element is packaged in a transistor shape. By adopting Transistor Outline (TO) packaging, the single-fiber four-way optical device 100 can be developed towards miniaturization, and the structure is more compact. Specifically, a TO46 package can be adopted, and the TO tube seat of the TO46 has the outer diameter size of 4.6 mm.
The light inlet channel is aligned with the third light outlet channel. Through the arrangement, the light path from the light inlet channel to the third light outlet channel is parallel and level, the transmission distance of the light path is shortened, the loss of optical power is reduced, and better transmission efficiency can be realized.
The filter assembly 120 is located between the light-in channel and the third light-out channel. Through the arrangement, light incident from the light-in channel can directly irradiate the filter component 120, and part of light can also be emitted from the filter component 120 to the third light-out channel, so that the transmission distance of a light path is reduced, and the transmission efficiency of the optical fiber is improved.
The fourth filter segment 124 is located between the second filter segment 122 and the third filter segment 123. Through such setting, can make the light that the wavelength is 1550nm incide on third filter 123 at first, then third filter 123 reflects to fourth filter 124 again on, and then saved the shared space of filtering component 120 for the distance between second filter 122 and the third filter 123 can reduce, and then makes filtering component 120 compact structure, tends to the miniaturization.
The embodiment of the present application further provides an optical power meter, which includes a single-fiber four-way optical device 100. The optical power meter comprises a single-fiber four-way optical device 100, can compatibly receive light with the wavelength of 1260nm to 1690nm, can independently reflect light with the wavelengths of 1490nm, 1550nm and 1577nm, and achieves power calculation of optical fiber networks with the speed of 2.5Gbit/s and 10 Gbit/s.
In a particular embodiment, the optical power meter comprises a handheld optical power meter. The handheld optical power meter is mainly applied to the network engineering of the optical fiber, the radio and the Television (CATV), the optical fiber communication engineering, the comprehensive wiring system, the production and research of optical devices, the optical communication teaching and test and other optical fiber engineering.
Hand-held optical power meters are known for being extremely intuitive and easy to use. Although set-up and operation vary from manufacturer to manufacturer and model to model, many of the basic functions of optical power or optical loss testing remain consistent from platform to platform. The control buttons on a handheld optical power meter typically include power (on/off), wavelength selection, memory functions, unit display, and zero/reference buttons to establish baseline values.
The optical power meter may be used in conjunction with an Optical Light Source (OLS) to form an optical loss test apparatus (OLTS). This function is particularly useful during the build phase prior to system startup. Fiber jumpers, adapters, or direct connections are used to connect the optical power meters and the OLS to both ends of the fiber link. The power supply to the optical power meter is turned on, then the OLS is turned on, and then the correct wavelength is selected. By measuring the power output power of the calibration light source, the insertion loss or attenuation of the link can be quantified and compared to a loss budget.
It is noted that, in this document, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely illustrative of particular embodiments of the utility model that enable those skilled in the art to understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A single-fiber four-way optical device, comprising: an optical device housing and a filter assembly;
the optical device shell is provided with an inner cavity, and an incident light channel, a first light-emitting channel, a second light-emitting channel, a third light-emitting channel and a fourth light-emitting channel which are communicated with the inner cavity;
the filtering component is accommodated in the inner cavity and comprises a first filtering sheet, a second filtering sheet, a third filtering sheet and a fourth filtering sheet;
the light inlet channel is used for injecting light with the wavelength of 1260nm to 1690nm to the filtering component, and the light with the wavelength of 1260nm to 1670nm is emitted from the first light outlet channel after being semi-reflected by the first filter plate;
light with the wavelength of 1490nm is transmitted by the first filter, then enters the second filter, is reflected by the second filter and is emitted from the second light-emitting channel;
light with the wavelength of 1550nm is transmitted by the first filter and the second filter in sequence, then enters the third filter, is reflected to the fourth filter by the third filter, and is reflected to the third light-emitting channel by the fourth filter;
and light with the wavelength of 1577nm sequentially passes through the first filter, the second filter and the third filter and then is emitted from the fourth light-emitting channel.
2. The single-fiber four-way optical device according to claim 1, wherein light having a wavelength of 1260nm to 1690nm is incident from the light-incident channel to the filter assembly in a first direction, and light having a wavelength of 1260nm to 1690nm is emitted from the first light-exiting channel in a second direction;
the first direction and the second direction are perpendicular to each other; a first included angle a is formed between the first filter plate and the first direction, and the value range of the first included angle a is 44 degrees and more than a and less than 46 degrees.
3. The single-fiber four-way optical device according to claim 1, wherein light having a wavelength of 1260nm to 1690nm is incident from the light-incident channel to the filter assembly in a first direction, and light having a wavelength of 1490nm is emitted from the second light-exiting channel in a third direction;
the first direction and the third direction are perpendicular to each other; and a second included angle b is formed between the second filter plate and the first direction, and the value range of the second included angle b is 44 degrees and more than b and less than 46 degrees.
4. The single-fiber four-way optical device according to claim 1, wherein light with a wavelength of 1260nm to 1690nm is incident from the light-incident channel to the filter assembly in a first direction, and light with a wavelength of 1550nm is emitted from the third light-exiting channel in a fourth direction; the first direction and the fourth direction are perpendicular to each other; a third included angle c is formed between the third filter plate and the first direction, and a fourth included angle d is formed between the fourth filter plate and the fourth direction; the value range of the third included angle c is more than or equal to 10 degrees and less than or equal to 22 degrees, and the value range of the fourth included angle d is more than or equal to 32 degrees and less than or equal to 35 degrees.
5. The single-fiber four-way optical device according to claim 4, wherein the sum of the third included angle c and the fourth included angle d ranges from greater than 44 ° to less than 46 °.
6. The single-fiber four-way optical device according to any one of claims 1 to 5, further comprising four optical receiving elements, wherein the optical receiving elements are all configured to receive an optical signal, and the four optical receiving elements are respectively disposed on the first light-emitting channel, the second light-emitting channel, the third light-emitting channel, and the fourth light-emitting channel.
7. The four-way light device as claimed in claim 6, wherein the light receiving element is packaged in a transistor configuration.
8. The device of claim 1, wherein the light-in channel is aligned with the third light-out channel.
9. The single-fiber four-way optical device according to claim 8, wherein the filter assembly is located between the light-in channel and the third light-out channel, and the fourth filter is located between the second filter and the third filter.
10. An optical power meter comprising the single fiber four-way optical device according to any one of claims 1 to 9.
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| CN202121236942.1U CN217034328U (en) | 2021-06-03 | 2021-06-03 | Single-fiber four-way optical device and optical power meter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117631153A (en) * | 2024-01-26 | 2024-03-01 | 四川九州光电子技术有限公司 | CPON device and CPON device assembly method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117631153A (en) * | 2024-01-26 | 2024-03-01 | 四川九州光电子技术有限公司 | CPON device and CPON device assembly method |
| CN117631153B (en) * | 2024-01-26 | 2024-04-09 | 四川九州光电子技术有限公司 | CPON device and CPON device assembly method |
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