CN107959531B - Light emitting device - Google Patents
Light emitting device Download PDFInfo
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- CN107959531B CN107959531B CN201610906086.3A CN201610906086A CN107959531B CN 107959531 B CN107959531 B CN 107959531B CN 201610906086 A CN201610906086 A CN 201610906086A CN 107959531 B CN107959531 B CN 107959531B
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- optical fiber
- signal
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- electric switch
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
Abstract
The present application provides a light emitting device, comprising: optical fiber interface, detecting element, electric switch unit and transmission unit, wherein: the detection unit is connected with the electric switch unit and used for detecting the optical fiber plugging state of the optical fiber interface, sending a closing signal to the electric switch unit when detecting that the optical fiber interface is plugged into the optical fiber, and sending a disconnecting signal to the electric switch unit when detecting that the optical fiber is pulled out of the optical fiber interface; the electric switch unit is connected between the transmitting unit and the power supply circuit and is used for being closed when receiving a closing signal sent by the detection unit so that the power supply circuit supplies power to the transmitting unit and being opened when receiving an opening signal sent by the detection unit so as to block the power supply circuit from supplying power to the transmitting unit; and the transmitting unit is connected with the optical fiber interface and used for converting the electric signal into an optical signal and transmitting the optical signal on the optical fiber interface.
Description
Technical Field
The present application relates to the field of optical communication technologies, and in particular, to a light emitting device.
Background
The light emitting device is a key device in optical communication equipment, and mainly functions to convert an electrical signal into an optical signal and then emit the optical signal. At present, when an optical communication device is in a power-on state, if an optical fiber is not inserted into an optical fiber interface of a light emitting device, the light emitting device still emits a light signal through the optical fiber interface. Thus, not only is the energy of the optical communication device wasted and additional heat generated, but also additional laser contamination is caused.
Disclosure of Invention
In view of the above, the present application provides a light emitting device.
Specifically, the method is realized through the following technical scheme:
the application provides a light emitting device, including: optical fiber interface, detecting element, electric switch unit and transmission unit, wherein:
the detection unit is connected with the electric switch unit and used for detecting the optical fiber plugging state of the optical fiber interface, sending a closing signal to the electric switch unit when detecting that the optical fiber interface is plugged into the optical fiber, and sending a disconnecting signal to the electric switch unit when detecting that the optical fiber is pulled out of the optical fiber interface;
the electric switch unit is connected between the transmitting unit and the power supply circuit and is used for being closed when receiving a closing signal sent by the detection unit so that the power supply circuit supplies power to the transmitting unit and being opened when receiving an opening signal sent by the detection unit so as to block the power supply circuit from supplying power to the transmitting unit;
and the transmitting unit is connected with the optical fiber interface and used for converting the electric signal into an optical signal and transmitting the optical signal on the optical fiber interface.
Wherein, the detecting element includes: first and second conductors, a resistor, an analog-to-digital converter, and a micro-controller processor MCU, wherein:
the space between the first conductor and the second conductor is aligned with the optical fiber interface, so that the optical fiber is inserted into the optical fiber interface after passing through the space, and the optical fiber is pulled out of the optical fiber interface and then leaves the space;
the first conductor and the resistor are connected in series and then connected with the anode of the direct current power supply, and the second conductor is connected with the cathode of the direct current power supply;
two input ports of the analog-to-digital converter are respectively connected with two ends of the resistor, and an output port of the analog-to-digital converter is connected with the MCU and used for converting the voltage on the resistor into a digital signal and then transmitting the digital signal to the MCU;
the MCU is connected with the electric switch unit and used for judging the voltage on the resistor according to the digital signal after receiving the digital signal sent by the analog-digital converter, if the voltage is judged to be less than 0, a closing signal is sent to the electric switch unit, and if the voltage is judged to be more than 0, an opening signal is sent to the electric switch unit.
The first conductor and the second conductor are two parallel polar plates with conductive characteristics.
Wherein, the polar plate is made of metal, alloy or graphene.
Wherein the distance between the first conductor and the second conductor is greater than the outer diameter of the optical fiber interface.
The analog-to-digital converter is specifically used for amplifying the voltage on the resistor, converting the amplified voltage into a digital signal and then sending the digital signal to the MCU.
The electric switch unit is a relay or a power operational amplifier.
Wherein, the transmitting unit includes: laser driver and tosa, wherein:
the laser driver is connected with the electric switch unit and used for converting the electric signal into an optical signal and sending the optical signal to the light emission submodule;
and the light emission submodule is connected with the laser driver and the optical fiber interface and is used for emitting the optical signal on the optical fiber interface after receiving the optical signal sent by the laser driver.
Through the above technical scheme of this application, detecting element can detect optical fiber interface's optic fibre plug state, when having inserted optic fibre on detecting optical fiber interface, send closed signal to electric switch unit, electric switch unit will carry out closed operation after receiving this closed signal, so that the transmitting element is electrified, thereby the transmitting element can be with behind the signal of telecommunication conversion light signal, transmit optical signal on optical fiber interface, in addition, detecting element is when detecting the optic fibre on optical fiber interface and being extracted, send the break signal to electric switch unit, electric switch unit will carry out the break operation after receiving this break signal, so that the transmitting element falls the electricity, thereby the transmitting element will stop converting the signal of telecommunication into optical signal, stop transmitting optical signal on optical fiber interface. Therefore, the purpose that when the optical fiber is inserted into the optical fiber interface, the optical signal is emitted on the optical fiber interface, and when the optical fiber is not inserted into the optical fiber interface, the optical signal is automatically stopped to be emitted on the optical fiber interface is achieved, and the effects of accurately controlling laser emission, saving energy and reducing heat and laser pollution are achieved.
Especially in the deployment application of large-scale optical communication equipment, use the light emitting device of this application, can effectively reduce equipment energy consumption, the energy saving reduces the radiating pressure, extension components and parts life has higher using value in engineering application and realization.
Drawings
FIG. 1 is a schematic view of a light emitting device according to an exemplary embodiment of the present application;
fig. 2 is a schematic view of a light emitting device showing a specific structure of a detection unit according to an exemplary embodiment of the present application;
FIG. 3 is a circuit diagram of a detection unit of an exemplary embodiment of the present application;
fig. 4 is a schematic diagram of a connection of a transmitting unit and an electric switching unit showing a specific structure of the transmitting unit according to an exemplary embodiment of the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
In order to solve the problems of wasting energy, generating additional heat and causing additional laser pollution of the light emitting device in the prior art, the following embodiments of the present application provide a light emitting device which can be applied to an optical communication device.
As shown in fig. 1, the light emitting device of the embodiment of the present application includes: an optical fiber interface 10, a detection unit 20, an electrical switch unit 30 and a transmission unit 40, wherein:
the detection unit 20 is connected with the electric switch unit 30 and is used for detecting the optical fiber plugging state of the optical fiber interface 10, sending a closing signal to the electric switch unit 30 when detecting that the optical fiber interface 10 is plugged with an optical fiber, and sending an opening signal to the electric switch unit 30 when detecting that the optical fiber is pulled out of the optical fiber interface 10;
the electric switch unit 30 is connected between the transmitting unit 40 and the power supply circuit, and is used for being closed when receiving a closing signal sent by the detecting unit 20 so that the power supply circuit supplies power to the transmitting unit 40, and being opened when receiving an opening signal sent by the detecting unit 20 so as to block the power supply circuit from supplying power to the transmitting unit 40;
and a transmitting unit 40 connected to the optical fiber interface 10, for converting the electrical signal into an optical signal and transmitting the optical signal on the optical fiber interface 10.
In practical implementation, the electric switch unit 30 may be a relay or a power operational amplifier. Obviously, the electrical switch unit 30 needs to be connected to an external power source in order to maintain its normal operation.
In the above light emitting device, the detecting unit may detect an optical fiber plugging state of the optical fiber interface, when an optical fiber is inserted into the optical fiber interface, the detecting unit sends a close signal to the electrical switching unit, the electrical switching unit performs a close operation after receiving the close signal, so as to power on the emitting unit, so that the emitting unit can transmit the optical signal on the optical fiber interface after converting the electrical signal into the optical signal, in addition, when the detecting unit detects that the optical fiber on the optical fiber interface is pulled out, the detecting unit sends an open signal to the electrical switching unit, the electrical switching unit performs an open operation after receiving the open signal, so as to power off the emitting unit, so that the emitting unit stops converting the electrical signal into the optical signal, and stops transmitting the optical signal on the optical fiber interface. Therefore, the purpose that when the optical fiber is inserted into the optical fiber interface, the optical signal is emitted on the optical fiber interface, and when the optical fiber is not inserted into the optical fiber interface, the optical signal is automatically stopped to be emitted on the optical fiber interface is achieved, and the effects of accurately controlling laser emission, saving energy and reducing heat and laser pollution are achieved.
Especially in the deployment application of large-scale optical communication equipment, the light emitting device of the embodiment of the application can effectively reduce the energy consumption of the equipment, save energy, reduce the heat dissipation pressure, prolong the service life of components and parts, and has higher application value in engineering application and realization.
In order to detect the fiber plugging state of the optical fiber interface 10, as shown in fig. 2, the detecting unit 20 includes: a first conductor 201 and a second conductor 202, a resistor R, an analog-to-digital converter 203, and a micro-controller processor (MCU)204, wherein:
the space between the first conductor 201 and the second conductor 202 is aligned with the optical fiber interface 10, so that the optical fiber 50 is inserted into the optical fiber interface 10 after passing through the space, and the optical fiber 50 is pulled out of the optical fiber interface 10 and then leaves the space; wherein, the distance between the first conductor 201 and the second conductor 202 is slightly larger than the outer diameter of the optical fiber interface 10;
a first conductor 201 and a resistor R are connected in series and then connected with the positive pole of a direct current power supply Vcc, and a second conductor 202 is connected with the negative pole of the direct current power supply Vcc;
two input ports of the analog-to-digital converter 203 are respectively connected to two ends of the resistor R, and an output port is connected to the MCU 204, and is configured to convert a voltage across the resistor R into a digital signal and send the digital signal to the MCU 204 through the output port;
an IO (input/output) port of the MCU 204 is connected to a logic control port Con of the electrical switching unit 30, and is configured to determine a voltage across the resistor R according to a digital signal sent from the analog-to-digital converter 203 after receiving the digital signal, send a close signal to the electrical switching unit 30 through the IO port if the voltage is determined to be less than 0, and send an open signal to the electrical switching unit 30 through the IO port if the voltage is determined to be greater than 0.
In the detection unit shown in fig. 2, the first conductor 201 and the second conductor 202 actually form a capacitor C, since the outer diameter of the optical fiber interface is small, typically 125 μm. For ease of implementation, the first conductor 201 and the second conductor 202 may be two parallel plates having conductive properties. The material of the polar plate can be metal, alloy, graphene or the like.
The circuit consisting of the capacitor C, the resistor R and the dc power supply Vcc is shown in fig. 3. The operation of the transmitting device is described in detail below with respect to the circuit shown in fig. 3.
Initially, no optical fiber is inserted into the fiber interface 10, and the dielectric E of the capacitor C is air. After the circuit shown in fig. 3 is turned on, the capacitor C is charged, a charging current flows through the resistor R, and the voltage value across the resistor R is greater than 0, and after the charging is completed, the charging current does not flow through the resistor R, and the voltage value across the resistor R is equal to 0.
When the optical fiber is inserted into the optical fiber interface 10, the medium E of the capacitor C is changed from air to optical fiber, and since the relative dielectric constant of air is 1 and the relative dielectric constant of optical fiber glass is 1.5-2.2, when the optical fiber is inserted into the optical fiber interface 10, the capacitance of the capacitor C is reduced, so that the capacitor C is discharged, and the voltage on the resistor R is less than 0 during the discharging process. The analog-to-digital converter 203 converts the voltage across the resistor R into a digital signal and sends the digital signal to the MCU 204, and after the MCU 204 receives the digital signal and determines that the voltage across the resistor R is less than 0, the MCU will send a close signal to the electrical switch unit 30 through the IO port. The electrical switch unit 30 is closed after receiving the closing signal from the logic control interface Con, so that the power supply circuit is connected to the transmitting unit 40, and the power supply circuit outputs direct current to the transmitting unit 40 through the two power output ports Out1 and Out2 of the electrical switch unit 30, so that the transmitting unit 40 can work normally, and converts the electrical signal into an optical signal and transmits the optical signal through the optical fiber interface. Thereby realizing the purpose of transmitting optical signals when the optical fiber is inserted into the optical fiber interface.
When the optical fiber is pulled out of the optical fiber interface 10, the dielectric E of the capacitor C is changed into air by the optical fiber, and therefore, the capacitance of the capacitor C is increased, thereby causing the capacitor C to be charged again, and the voltage on the resistor R is greater than 0 during the charging process. The analog-to-digital converter 203 converts the voltage across the resistor R into a digital signal and sends the digital signal to the MCU 204, and after the MCU 204 receives the digital signal and determines that the voltage across the resistor R is greater than 0, the MCU sends a turn-off signal to the electrical switch unit 30 through the IO port. The electrical switch unit 30 is turned off after receiving the turn-off signal from the logic control port Con, so that the power supply circuit is turned off from the transmitting unit 40, and the power supply circuit cannot output direct current to the transmitting unit 40 through the two power output ports Out1 and Out2 of the electrical switch unit 30, so that the transmitting unit 40 cannot operate, that is, cannot convert the electrical signal into an optical signal and then transmits the optical signal through the optical fiber interface. Therefore, the purpose of stopping transmitting optical signals when the optical fiber is pulled out of the optical fiber interface is achieved.
In addition, for convenience of analog-to-digital conversion, the analog-to-digital converter 203 may amplify the voltage across the resistor R, and then convert the amplified voltage into a digital signal and transmit the digital signal to the MCU 204.
The detection unit in the embodiment of the application realizes a non-contact detection design, and can complete detection of the optical fiber plugging state of the optical fiber interface under the condition of not contacting the optical fiber, so that loss of the optical fiber cannot be caused.
As shown in fig. 4, the transmitting unit 40 includes: a laser driver 401 and a Transmitter Optical Subassembly (TOSA)402, wherein:
the laser driver 401, whose power input port In1 is connected to the power output port Out1 of the electrical switch unit 30, and power input port In2 is connected to the power output port Out2 of the electrical switch unit 30, for converting the electrical signal into an optical signal and sending the optical signal to the tosa 402; it can be seen that when the electrical switch unit 30 is closed, the laser driver 401 receives the dc power from the power supply circuit through the power input ports In1 and In2, and then can operate normally, and when the electrical switch unit 30 is opened, the laser driver 401 cannot receive the dc power from the power supply circuit, and thus stops operating;
and the tosa 402 is connected with the laser driver 401 and the optical fiber interface 10, and is configured to transmit an optical signal on the optical fiber interface 10 after receiving the optical signal transmitted by the laser driver 401.
In practical applications, a medium-sized communication machine room is taken as an example, 10 to 100 groups of light emitting devices with 8 to 128 ports are usually used in the medium-sized communication machine room, and for redundancy backup and other considerations, 15% to 20% of optical fiber interfaces are in an interrupted state all the year around. Assuming that the maximum power consumption of the light emitting device is 16W and the idle power consumption is 14.1735W, the maximum power consumption of 100 sets of light emitting devices reaches 1600W. After the embodiment of the application is used, about 15% of the light emitting devices in the interruption state can be closed, so that the power consumption can be reduced by 10% -15%.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of the application. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.
Claims (7)
1. A light emitting device, comprising: optical fiber interface, detecting element, electric switch unit and transmission unit, wherein:
the detection unit is connected with the electric switch unit and used for detecting the optical fiber plugging state of the optical fiber interface, sending a closing signal to the electric switch unit when detecting that the optical fiber interface is plugged with an optical fiber, and sending a disconnecting signal to the electric switch unit when detecting that the optical fiber is pulled out of the optical fiber interface;
the electric switch unit is connected between the transmitting unit and the power supply circuit and is used for being closed when receiving the closing signal sent by the detection unit so that the power supply circuit supplies power to the transmitting unit, and is opened when receiving the opening signal sent by the detection unit so that the power supply circuit is blocked from supplying power to the transmitting unit;
the transmitting unit is connected with the optical fiber interface and used for converting an electrical signal into an optical signal and transmitting the optical signal on the optical fiber interface;
the detection unit includes: first and second conductors, a resistor, an analog-to-digital converter, and a micro-controller processor MCU, wherein:
the space between the first conductor and the second conductor is aligned with the optical fiber interface, so that the optical fiber is inserted into the optical fiber interface after passing through the space, and the optical fiber is pulled out of the optical fiber interface and then leaves the space;
the first conductor and the resistor are connected in series and then connected with the positive pole of a direct current power supply, and the second conductor is connected with the negative pole of the direct current power supply;
two input ports of the analog-to-digital converter are respectively connected with two ends of the resistor, and an output port of the analog-to-digital converter is connected with the MCU and used for converting the voltage on the resistor into a digital signal and then transmitting the digital signal to the MCU;
the MCU is connected with the electric switch unit and used for judging the voltage on the resistor according to the digital signal after receiving the digital signal sent by the analog-to-digital converter, if the voltage is judged to be less than 0, the MCU sends the closing signal to the electric switch unit, and if the voltage is judged to be more than 0, the MCU sends the opening signal to the electric switch unit.
2. The apparatus of claim 1, wherein the first conductor and the second conductor are two parallel plates having conductive properties.
3. The apparatus of claim 2, wherein the plate is made of a metal, an alloy, or graphene.
4. The apparatus of claim 1, wherein a distance between the first conductor and the second conductor is greater than an outer diameter of the fiber optic interface.
5. The apparatus according to claim 1, wherein the analog-to-digital converter is specifically configured to amplify the voltage across the resistor, convert the amplified voltage into a digital signal, and send the digital signal to the MCU.
6. The apparatus of claim 1, wherein the electrical switching unit is a relay or a power operational amplifier.
7. The apparatus of claim 1, wherein the transmitting unit comprises: laser driver and tosa, wherein:
the laser driver is connected with the electric switch unit and used for converting an electric signal into an optical signal and sending the optical signal to the transmitter optical subassembly;
the light emission sub-module is connected with the laser driver and the optical fiber interface and used for emitting the optical signal on the optical fiber interface after receiving the optical signal emitted by the laser driver.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610906086.3A CN107959531B (en) | 2016-10-18 | 2016-10-18 | Light emitting device |
| PCT/CN2017/106023 WO2018072643A1 (en) | 2016-10-18 | 2017-10-13 | Light emission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610906086.3A CN107959531B (en) | 2016-10-18 | 2016-10-18 | Light emitting device |
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| Publication Number | Publication Date |
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| CN107959531A CN107959531A (en) | 2018-04-24 |
| CN107959531B true CN107959531B (en) | 2020-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610906086.3A Active CN107959531B (en) | 2016-10-18 | 2016-10-18 | Light emitting device |
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| Country | Link |
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| CN (1) | CN107959531B (en) |
| WO (1) | WO2018072643A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110098864B (en) * | 2019-04-11 | 2020-11-24 | 青岛海信宽带多媒体技术有限公司 | Optical module control method, optical module and network equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1641391A (en) * | 2004-01-14 | 2005-07-20 | 王子梁 | Photosensitive oiptical fiber connecting seat |
| CN101621330A (en) * | 2008-06-30 | 2010-01-06 | 华为技术有限公司 | Method, system and optical fiber adapter for detecting connection state of optical fiber |
| US8391708B1 (en) * | 2008-07-11 | 2013-03-05 | Finisar Corporation | Laser eye safety and fiber receptacle presence detection |
| CN105759369A (en) * | 2014-12-19 | 2016-07-13 | 华为技术有限公司 | Laser leakage-preventing optical module and control method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6359708B1 (en) * | 1997-09-18 | 2002-03-19 | Lucent Technologies Inc. | Optical transmission line automatic power reduction system |
| CN103532541B (en) * | 2013-09-30 | 2017-02-22 | 上海斐讯数据通信技术有限公司 | Light module power supply control method and system |
-
2016
- 2016-10-18 CN CN201610906086.3A patent/CN107959531B/en active Active
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2017
- 2017-10-13 WO PCT/CN2017/106023 patent/WO2018072643A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1641391A (en) * | 2004-01-14 | 2005-07-20 | 王子梁 | Photosensitive oiptical fiber connecting seat |
| CN101621330A (en) * | 2008-06-30 | 2010-01-06 | 华为技术有限公司 | Method, system and optical fiber adapter for detecting connection state of optical fiber |
| US8391708B1 (en) * | 2008-07-11 | 2013-03-05 | Finisar Corporation | Laser eye safety and fiber receptacle presence detection |
| CN105759369A (en) * | 2014-12-19 | 2016-07-13 | 华为技术有限公司 | Laser leakage-preventing optical module and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018072643A1 (en) | 2018-04-26 |
| CN107959531A (en) | 2018-04-24 |
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