WO2018072643A1 - 光发射 - Google Patents

光发射 Download PDF

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Publication number
WO2018072643A1
WO2018072643A1 PCT/CN2017/106023 CN2017106023W WO2018072643A1 WO 2018072643 A1 WO2018072643 A1 WO 2018072643A1 CN 2017106023 W CN2017106023 W CN 2017106023W WO 2018072643 A1 WO2018072643 A1 WO 2018072643A1
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signal
optical fiber
unit
interface
conductor
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English (en)
French (fr)
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李韬
李佳
王成瑶
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New H3C Technologies Co Ltd
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New H3C Technologies Co Ltd
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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
    • 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

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  • the light emitting device is a key device in the optical communication device, and its main function is to convert the electrical signal into an optical signal and then transmit it.
  • FIG. 1 is a schematic diagram of a light emitting device according to an exemplary embodiment of the present application.
  • FIG. 2 is a schematic diagram of a light emitting device showing a specific structure of a detecting unit according to an exemplary embodiment of the present application
  • FIG. 3 is a circuit diagram of a detecting unit of an exemplary embodiment of the present application.
  • FIG. 4 is a schematic diagram showing a connection between a transmitting unit and an electrical switching unit of a specific structure of a transmitting unit according to an exemplary embodiment of the present application;
  • 5A is a schematic diagram of voltages when a capacitor is charged in an example of the present application.
  • FIG. 5B is a schematic diagram of voltages when a capacitor is discharged in an example of the present application.
  • optical communication device When the optical communication device is turned on, if the optical interface of the optical transmitting device on the optical communication device is not inserted Optical fibers, light emitting devices still emit optical signals through the fiber optic interface. In this way, not only is the energy of the optical communication device wasted, additional heat is generated, and additional laser contamination is caused.
  • the following embodiments of the present application provide a light emitting device that can be applied to an optical communication device.
  • the light emitting device of the embodiment of the present application includes: a fiber optic interface 10, a detecting unit 20, an electrical switching unit 30, and a transmitting unit 40, wherein:
  • the detecting unit 20 is connected to the electrical switch unit 30 for transmitting a conduction signal to the electrical switch unit 30 when detecting that the optical fiber interface 10 is inserted into the optical fiber.
  • the electrical switching unit is turned on. 30 sends a disconnect signal;
  • the electrical switch unit 30 is connected between the transmitting unit 40 and the power supply circuit 50 for conducting when the conduction signal from the detecting unit 20 is received, so that the power supply circuit 50 supplies power to the transmitting unit 40, and receives the When the disconnection signal sent by the detecting unit 20 is turned off, the power supply circuit is blocked from supplying power to the transmitting unit 40;
  • the transmitting unit 40 is connected to the optical fiber interface 10 for converting an electrical signal into an optical signal and transmitting an optical signal on the optical fiber interface 10.
  • electrical switch unit 30 can be a relay or a power operational amplifier or the like.
  • the electrical switch unit 30 needs to be connected to an external power source in order to maintain its normal operation.
  • the detecting unit may send a conduction signal to the electrical switching unit when the optical fiber interface is inserted into the optical fiber interface, and the electrical switching unit turns on after receiving the conduction signal, so that The transmitting unit is powered up, so that the transmitting unit can convert the electrical signal into an optical signal, and emit an optical signal on the optical fiber interface.
  • the detecting unit sends a disconnection signal to the electrical switching unit when detecting that the optical fiber on the optical fiber interface is pulled out. After receiving the disconnection signal, the electrical switch unit is turned off to power down the transmitting unit, so that the transmitting unit stops converting the electrical signal into an optical signal and stops emitting the optical signal on the optical fiber interface.
  • the light-emitting device of the embodiment of the present application can effectively reduce the energy consumption of the device, save energy, reduce heat dissipation pressure, and prolong the service life of components, and has high performance in engineering application and implementation. Value.
  • 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 control processor (MCU) 204, wherein:
  • the space between the first conductor 201 and the second conductor 202 is aligned with the fiber optic interface 10 so that the fiber 50 passes through the space and is inserted into the fiber interface 10, and the fiber 50 is pulled out of the fiber interface 10 and exits the space;
  • the distance between the first conductor 201 and the second conductor 202 is greater than the outer diameter of the fiber optic interface 10;
  • the first conductor 201 is connected to one end of the resistor R, the other end of the resistor R is connected to the anode of the DC power source Vcc, and the second conductor 202 is connected to the cathode of the DC power source Vcc;
  • the two input ports of the analog-to-digital converter 203 are respectively connected at both ends of the resistor R, and the output port is connected to the MCU 204 for converting the voltage on the resistor R into a digital signal and transmitting it to the MCU 204 through the output port.
  • the IO (input and output) port of the MCU 204 is connected to the logic control port Con of the electrical switch unit 30, and the MCU 204 is configured to detect that the fiber interface is inserted into the fiber according to the digital signal sent by the received analog-to-digital converter 203.
  • an on signal is sent to the electrical switch unit 30, and when it is detected that the optical fiber is pulled out of the optical fiber interface 10, an off signal is sent to the electrical switch unit 30.
  • the voltage on the resistor R is obtained according to the digital signal. If the voltage is less than the first voltage threshold, the conduction signal is sent to the electrical switch unit 30 through the IO port. If the voltage is greater than the second voltage threshold, then the voltage is greater than the second voltage threshold. The disconnection signal is sent to the electrical switching unit 30 through the IO port.
  • the first voltage threshold may be equal to the second voltage threshold (eg, the first voltage threshold and the second voltage threshold are all zero), or may be unequal (eg, the first voltage threshold is equal to 0.5 millivolts, and the second voltage threshold is equal to - 0.5 mV), this application does not limit this.
  • the first conductor 201 and the second conductor 202 actually constitute a capacitor C.
  • the first conductor 201 and the second conductor 202 can be two parallel plates having electrically conductive properties.
  • the material of the plate may be metal, alloy, or graphene.
  • FIG. 1 A circuit composed of a capacitor C, a resistor R, and a DC power source Vcc is shown in FIG. The working principle of the above transmitting device will be described in detail below with respect to the circuit shown in FIG.
  • FIG. 5A is a schematic diagram of the voltage across the resistor R when the capacitor C is charged in the example of the present application.
  • the charging current is passed through the resistor R, and the voltage value on the resistor R is greater than zero.
  • the voltage across resistor R reaches its maximum at T1 and then gradually decreases.
  • the charging current is no longer passed through the resistor R, and then the voltage value on the resistor R is equal to zero.
  • the medium E of the capacitor C is changed from air to optical fiber. Since the relative dielectric constant of the air is 1, the relative dielectric constant of the optical fiber is 1.5 to 2.2, so when the optical fiber is inserted into the optical fiber interface 10 The capacitance of the capacitor C is reduced, causing the capacitor C to discharge.
  • FIG. 5B the capacitor C in the example of the present application Schematic diagram of the voltage across resistor R during discharge. The voltage across resistor R reaches a minimum at T2 and then gradually increases. The voltage across resistor R is less than zero during discharge.
  • the analog-to-digital converter 203 converts the voltage on the resistor R into a digital signal and sends it to the MCU 204. After receiving the digital signal, the MCU 204, based on the digital signal, detects that the optical fiber interface is inserted into the optical fiber. And transmitting an on signal to the electrical switch unit, and when detecting that the optical fiber is pulled out of the optical fiber interface, sending a disconnection signal to the electrical switch unit.
  • the turn-on signal and the turn-off signal can be level signals.
  • the turn-on signal is high and the turn-off signal is low.
  • the MCU 204 continuously outputs a high level through the IO port.
  • the electrical switching unit 30 continuously inputs the high level from the logic control interface Con to keep the electrical switching unit 30 in an on state.
  • the level signal output by the MCU 204 on the IO port changes from a high level to a low level, and the MCU 204 continuously outputs a low level through the IO port.
  • the electrical switching unit 30 continuously inputs the low level from the logic control interface Con to keep the electrical switching unit 30 in the off state.
  • the turn-on signal and the turn-off signal can be digital signals.
  • the MCU 204 sends an on signal through the IO port to indicate that the electrical switch unit 30 is turned on.
  • the electrical switch unit 30 is turned on and held.
  • the MCU 204 transmits a disconnection signal on the IO port to instruct the electrical switching unit 30 to disconnect.
  • the electrical switch unit 30 is turned off and held.
  • the conduction signal is sent to the electrical switching unit 30 through the IO port.
  • the first voltage threshold can be set to 0, -0.5 millivolts.
  • the power supply circuit 50 After the electrical switch unit 30 receives the turn-on signal from the logic control interface Con, the power supply circuit 50 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 In normal operation, the electrical signal is converted into an optical signal and transmitted through the optical fiber interface 10. Thereby, the purpose of emitting an optical signal when the optical fiber is inserted into the optical fiber interface is achieved.
  • the analog to digital converter 203 converts the voltage on the resistor R into a digital signal and transmits it to the MCU 204.
  • the MCU 204 determines that the voltage on the resistor R is greater than the second voltage threshold, and sends an off signal to the electrical switching unit 30 through the IO port.
  • the electric switch unit 30 is disconnected after receiving the disconnection signal from the logic control port Con, so that the power supply circuit 50 cannot output direct current to the transmitting unit 40 through the two power output ports Out1 and Out2 of the electric switch unit 30, thereby causing the transmission.
  • Unit 40 is inoperable, i.e., the electrical signal cannot be converted to an optical signal and transmitted through fiber optic interface 10. Thereby, the purpose of stopping the emission of the optical signal when the optical fiber is pulled out of the optical fiber interface is achieved.
  • the discharge process of the capacitor C corresponds to the fiber insertion operation
  • the charging process of the capacitor C corresponds to the fiber pull-out operation.
  • the insertion and removal of the fiber is alternated. Therefore, when the on signal and the off signal are digital signals, only one ON signal needs to be sent to the electric switch unit during one discharge, and only one off signal is needed to be sent to the electric switch unit in one charging process. .
  • the MCU 204 determines that the voltage on the resistor R changes from not less than the first voltage threshold to less than the first voltage threshold, it sends the electrical switch unit 30 to the electrical switch unit 30 through the IO port.
  • the MCU 204 determines that the voltage on the resistor R is greater than the second voltage threshold and is greater than the second voltage threshold, the MCU 204 sends a disconnect to the electrical switch unit 30 through the IO port. The signal is not sent later.
  • the analog-to-digital converter 203 may first amplify the voltage on the resistor R, and then convert the amplified voltage into a digital signal and then transmit it to the MCU 204.
  • the detection unit in the embodiment of the present application implements a non-contact detection design, which can complete the detection of the optical fiber insertion and removal operation of the optical fiber interface without contacting the optical fiber, thereby causing no loss to the optical fiber.
  • the transmitting unit 40 includes a laser driver 401 and a light emitting sub-module (TOSA) 402, wherein:
  • the laser driver 401 has a power input port In1 connected to the power output port Out1 of the electric switch unit 30, and a power input port In2 connected to the power output port Out2 of the electric switch unit 30 for converting an electrical signal into an optical signal and an optical signal. It is sent to the light emitting sub-module 402; it can be seen that when the electrical opening unit 30 is turned on, the laser driver 401 receives the DC power transmitted by the power supply circuit 50 through the power input ports In1 and In2, so that it can work normally when the electric light-emitting unit 30 is turned off. When turned on, the laser driver 401 cannot receive the direct current transmitted by the power supply circuit 50, thereby stopping the operation;
  • the light emitting sub-module 402 is coupled to the laser driver 401 and the fiber optic interface 10 for transmitting an optical signal on the fiber optic interface 10 after receiving the optical signal from the laser driver 401.
  • the light emitting device can have one or more fiber optic interfaces.
  • the optical transmitting device has one optical fiber interface as an example for description.
  • the light emitting device may be configured with the above units for each of the optical fiber interfaces, and the functions and connections thereof are the same as those in the above example, and details are not described herein.
  • the medium-sized communication equipment room Take the medium-sized communication equipment room as an example.
  • 10 to 100 sets of 8- to 128-port optical transmitting devices are usually used.
  • 15% to 20% of the optical fiber interfaces will be interrupted all the year round. status.
  • Hypothetical light emission The maximum power consumption of the device is 16W, and the no-load power consumption is 14.15735W.
  • the maximum power consumption of 100 sets of optical transmitters is 1600W. After the embodiment of the present application is used, about 15% of the light emitting device in the interrupted state can be turned off, so that the power consumption can be reduced by 10% to 15%.
  • the device embodiment since it basically corresponds to the method embodiment, reference may be made to the partial description of the method embodiment.
  • the device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, ie may be located A place, or it can be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without any creative effort.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optics & Photonics (AREA)
  • Optical Communication System (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

本申请提供光发射装置，该装置中包括：光纤接口；发射单元，用于将电信号转换成光信号，并在所述光纤接口上发射所述光信号；检测单元，用于在检测到所述光纤接口插入了光纤时，向所述电开关单元发送导通信号，在检测到所述光纤被拔出所述光纤接口时，向所述电开关单元发送断开信号；以及电开关单元，用于在接收到所述导通信号时进行导通，以使所述供电电路对所述发射单元供电，在接收到所述断开信号时进行断开，以阻断所述供电电路对所述发射单元供电。

Description

光发射
相关申请的交叉引用
本专利申请要求于2016年10月18日提交的、申请号为201610906086.3、发明名称为“一种光发射装置”的中国专利申请的优先权，该申请的全文以引用的方式并入本文中。
背景技术
光发射装置是光通信设备中的一个关键器件，其主要作用是将电信号转换成光信号后发射出去。
附图说明
图1是本申请一示例性实施例的光发射装置的示意图；
图2是本申请一示例性实施例的示出了检测单元的具体结构的光发射装置的示意图；
图3是本申请一示例性实施例的检测单元的电路图；
图4是本申请一示例性实施例的示出了发射单元的具体结构的发射单元与电开关单元的连接示意图；
图5A为本申请示例中电容器充电时电压示意图；
图5B为本申请示例中电容器放电时电压示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在光通信设备处于开机状态下，如果光通信设备上的光发射装置的光纤接口上没有插入 光纤，光发射装置仍然会通过该光纤接口发射光信号。这样，不仅浪费了光通信设备的能源，产生了额外的热量，而且，导致了额外的激光污染。
为了解决上述问题，本申请以下实施例中提供了一种光发射装置，该光发射装置可以应用于光通信设备中。
如图1所示，本申请实施例的光发射装置中包括：光纤接口10、检测单元20、电开关单元30和发射单元40，其中：
检测单元20，与电开关单元30连接，用于在检测到光纤接口10插入了光纤时，向电开关单元30发送导通信号，在检测到光纤被拔出光纤接口10时，向电开关单元30发送断开信号；
电开关单元30，连接在发射单元40和供电电路50之间，用于在接收到检测单元20发来的导通信号时进行导通，以使供电电路50对发射单元40供电，在接收到检测单元20发来的断开信号时进行断开，以阻断供电电路对发射单元40供电；
发射单元40，与光纤接口10连接，用于将电信号转换成光信号，在光纤接口10上发射光信号。
在一个例子中，电开关单元30可以为继电器或功率运算放大器等。电开关单元30需要连接外部电源，以便维持自身的正常工作。
在上述光发射装置中，检测单元可以在检测到光纤接口上插入了光纤时，向电开关单元发送导通信号，电开关单元在接收到该导通信号后，就会进行导通，以使发射单元上电，从而发射单元可以将电信号转换成光信号，在光纤接口上发射光信号，另外，检测单元在检测到光纤接口上的光纤被拔出时，向电开关单元发送断开信号，电开关单元在接收到该断开信号后，就会断开，以使发射单元掉电，从而发射单元就会停止将电信号转换成光信号，停止在光纤接口上发射光信号。从而，实现了当光纤接口上插入了光纤时，在该光纤接口上发射光信号，而当光纤被从光纤接口上拔出时，自动停止在该光纤接口上发射光信号的目的，达到了对激光发射的准确控制，节约能源，减少热量和激光污染的效果。
在大型光通信设备的部署应用中，使用本申请实施例的光发射装置，能够有效降低设备能耗，节约能源，减少散热压力，延长元器件使用寿命，在工程应用和实现中有较高的应用价值。
如图2所示，检测单元20中包括：第一导体201和第二导体202、电阻器R、模数转换器203、以及微控处理器(MCU)204，其中：
第一导体201和第二导体202之间的空间对准光纤接口10，以使光纤50穿过该空间后插入光纤接口10，并且，光纤50被拔出光纤接口10后离开该空间；其中，第一导体201和第二导体202之间的距离大于光纤接口10的外径；
第一导体201和电阻器R的一端连接，该电阻器R的另一端与直流电源Vcc的正极连接，第二导体202与直流电源Vcc的负极连接；
模数转换器203的两个输入端口分别连接在电阻器R的两端、输出端口与MCU 204连接，用于将电阻器R上的电压转换为数字信号后通过输出端口发送给MCU 204。
MCU 204的IO(输入输出)口与电开关单元30的逻辑控制端口Con连接，该MCU 204用于根据接收到的模数转换器203发来的数字信号，检测到所述光纤接口插入了光纤10时，向所述电开关单元30发送导通信号，检测到所述光纤被拔出所述光纤接口10时，向所述电开关单元30发送断开信号。
在一示例中，根据该数字信号得到电阻器R上的电压，若该电压小于第一电压阈值，则通过IO口向电开关单元30发送导通信号，若该电压大于第二电压阈值，则通过IO口向电开关单元30发送断开信号。其中，第一电压阈值可等于第二电压阈值(例如，第一电压阈值、第二电压阈值都为零)，也可不相等(例如，第一电压阈值等于0.5毫伏，第二电压阈值等于-0.5毫伏)，本申请对此不做限定。
在如图2所示的检测单元中，由于光纤接口的外径较小，例如，125微米，因此，第一导体201和第二导体202实际构成了一个电容器C。在一示例中，第一导体201和第二导体202可以为两个具有导电特性的平行的极板。该极板的材质可以为金属、合金、或石墨烯等。
电容器C、电阻器R和直流电源Vcc组成的电路如图3所示。下面针对图3所示的电路，对上述发射装置的工作原理进行详细介绍。
初始时，光纤接口10上未插入光纤，电容器C的介质E是空气。在如图3所示的电路接通后，电容器C会进行充电。图5A为本申请示例中电容器C充电时电阻器R上电压示意图。电阻器R上通过充电电流，此时电阻器R上的电压值大于0。电阻器R上的电压在T1时达到最大，之后逐渐减小。充电完成后，电阻器R上不再通过充电电流，则此时电阻器R上的电压值等于0。
当光纤插入光纤接口10时，电容器C的介质E由空气变为了光纤，由于空气的相对介电常数为1，光纤玻璃的相对介电常数为1.5～2.2，因此，当光纤插入光纤接口10时，电容器C的电容量会减小，从而导致电容器C进行放电。如图5B所示，为本申请示例中电容器C 放电时电阻器R上电压示意图。电阻器R上的电压在T2时达到最小，之后逐渐增大。在放电过程中电阻器R上的电压小于0。
模数转换器203将电阻器R上的电压转换为数字信号后发送给MCU 204，MCU 204在接收到该数字信号后，根据所述数字信号，当检测到所述光纤接口插入了光纤时，向所述电开关单元发送导通信号，当检测到所述光纤被拔出所述光纤接口时，向所述电开关单元发送断开信号。
在一示例中，所述导通信号和断开信号可为电平信号。例如，导通信号为高电平，断开信号为低电平。当检测到所述光纤接口10插入了光纤时，MCU 204通过IO口持续输出高电平。这样，电开关单元30从逻辑控制接口Con持续地输入该高电平，以使该电开关单元30持续处于导通状态。之后，当检测到该光纤被从该光纤接口拔出时，MCU 204在IO口上输出的电平信号从高电平跳变为低电平，MCU 204并通过IO口持续输出低电平。这样，电开关单元30从逻辑控制接口Con上持续地输入该低电平，以使该电开关单元30持续处于断开状态。
在一示例中，所述导通信号和断开信号可为数字信号。例如，当检测到所述光纤接口10插入了光纤时，MCU 204通过IO口发送一导通信号，以指示电开关单元30导通。当接收到该导通信号，电开关单元30导通，并保持。之后，当检测到该光纤被从该光纤接口10拔出时，MCU 204在IO口上发送一断开信号，以指示电开关单元30进行断开。当接收到该断开信号，电开关单元30进行断开，并保持。
在一示例中，判断出电阻器R上的电压小于第一电压阈值，则会通过IO口向电开关单元30发送导通信号。例如，第一电压阈值可设为0、-0.5毫伏。
电开关单元30从逻辑控制接口Con上接收到该导通信号后进行导通，供电电路50通过电开关单元30的两个电源输出端口Out1和Out2向发射单元40输出直流电，从而发射单元40可以正常工作，将电信号转换成光信号后通过光纤接口10发射出去。从而实现了在光纤插入光纤接口时发射光信号的目的。
当光纤从光纤接口10中拔出时，电容器C的介质E由光纤变化为了空气，因此，电容器C的电容量会增大，从而导致电容器C再次进行充电，在充电过程中电阻器R上的电压大于0。模数转换器203将电阻器R上的电压转换为数字信号后发送给MCU 204。
在一示例中，MCU 204在接收到该数字信号后，判断出电阻器R上的电压大于第二电压阈值，则会通过IO口向电开关单元30发送断开信号。
电开关单元30从逻辑控制端口Con上接收到该断开信号后断开，这样，供电电路50无法通过电开关单元30的两个电源输出端口Out1和Out2向发射单元40输出直流电，从而导致发射单元40无法工作，即，无法将电信号转换成光信号后通过光纤接口10发射出去。从而实现了在光纤拔出光纤接口时停止发射光信号的目的。
在本申请示例中，电容器C的放电过程对应于光纤插入操作，电容器C的充电过程对应于光纤拔出操作。针对同一光纤接口，光纤的插拔操作是交替进行的。因此，在所述导通信号和断开信号为数字信号时，在一次放电过程中只需要向电开关单元发送一次导通信号，在一次充电过程中只需要向电开关单元发送一次断开信号。例如，在一次光纤插拔的过程中，当MCU 204判断出电阻器R上的电压由不小于第一电压阈值变为小于第一电压阈值时，则会通过IO口向电开关单元30发送一次导通信号，后续不再发送；当MCU 204判断出电阻器R上的电压由不大于第二电压阈值变为大于第二电压阈值时，则会通过IO口向电开关单元30发送一次断开信号，后续不再发送。
另外，为了提高模数转换性能，模数转换器203可以先对电阻器R上的电压进行放大，然后，将放大后的电压转换为数字信号后发送给MCU 204。
本申请实施例中的检测单元，实现了一种非接触式的检测设计，能够在不接触光纤的情况下，完成对光纤接口的光纤插拔操作的检测，从而不会对光纤造成损耗。
如图4所示，发射单元40中包括：激光驱动器401和光发射次模块(TOSA)402，其中：
激光驱动器401，其电源输入端口In1与电开关单元30的电源输出端口Out1连接、电源输入端口In2与电开关单元30的电源输出端口Out2连接，用于将电信号转换成光信号，将光信号发送给光发射次模块402；可见，当电开光单元30导通时，激光驱动器401通过电源输入端口In1和In2接收到供电电路50传输的直流电后，从而可以正常工作，当电开光单元30断开时，激光驱动器401无法接收到供电电路50传输的直流电，从而停止工作；
光发射次模块402，与激光驱动器401和光纤接口10连接，用于在接收到激光驱动器401发来的光信号后，在光纤接口10上发射光信号。
光发射装置可具有一个或多个光纤接口。在上述实施例中以该光发射装置具有一个光纤接口为例进行说明。当光发射装置具有多个光纤接口时，该光发射装置可为每个光纤接口分别配置如上单元，其功能与连接与上述示例中相同，不再赘述。
以中型通信机房为例，中型通信机房中通常会使用10～100组8～128口的光发射装置，出于冗余备份等考虑，其中会有15％～20％的光纤接口会常年处于中断状态。假设，光发射 装置的最大功耗为16W，空载功耗为14.1735W，则100组光发射装置的最大功耗达到了1600W。使用本申请实施例后，可以关闭15％左右的处于中断状态的光发射装置，从而可以降低10％～15％的功耗。
对于装置实施例而言，由于其基本对应于方法实施例，所以相关之处参见方法实施例的部分说明即可。以上所描述的装置实施例仅仅是示意性的，其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。本领域普通技术人员在不付出创造性劳动的情况下，即可以理解并实施。
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
以上对本发明实施例所提供的方法和装置进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。

Claims (9)

  1. 一种光发射装置，包括：
    光纤接口；
    发射单元，与所述光纤接口连接，用于将电信号转换成光信号，并在所述光纤接口上发射所述光信号；
    检测单元，用于在检测到所述光纤接口插入了光纤时，向所述电开关单元发送导通信号，在检测到所述光纤被拔出所述光纤接口时，向所述电开关单元发送断开信号；以及
    电开关单元，连接在所述发射单元和供电电路之间，用于在接收到所述检测单元发来的所述导通信号时导通，以使所述供电电路对所述发射单元供电，在接收到所述检测单元发来的所述断开信号时断开，以阻断所述供电电路对所述发射单元供电。
  2. 根据权利要求1所述的装置，其中，所述检测单元包括：
    第一导体和第二导体，所述第一导体与电阻器的一端连接，所述电阻器的另一端与直流电源的正极连接，所述第二导体与直流电源的负极连接，所述第一导体和所述第二导体之间的空间对准所述光纤接口，以使光纤穿过所述空间后插入所述光纤接口，并且光纤被拔出所述光纤接口后离开所述空间；
    模数转换器，所述模数转换器的两个输入端口分别连接在所述电阻器的两端，用于将所述电阻器上的电压转换为数字信号；
    微控处理器MCU，所述MCU与所述模数转换器的输出端连接，用于根据接收到的所述模数转换器发来的数字信号，检测到所述光纤接口插入了光纤时，向所述电开关单元发送导通信号，检测到所述光纤被拔出所述光纤接口时，向所述电开关单元发送断开信号。
  3. 根据权利要求2所述的装置，其中，所述MCU被配置为：
    根据所述数字信号确定所述电阻器上的电压，
    若该电压小于第一电压阈值，则向所述电开关单元发送所述导通信号，
    若该电压大于第二电压阈值，则向所述电开关单元发送所述断开信号。
  4. 根据权利要求2所述的装置，其中，所述第一导体和所述第二导体为两个具有导电特性的平行的极板。
  5. 根据权利要求4所述的装置，其中，所述极板的材质为金属、合金、或石墨稀。
  6. 根据权利要求2所述的装置，其中，所述第一导体和所述第二导体之间的距离大于所述光纤接口的外径。
  7. 根据权利要求2所述的装置，其中，所述模数转换器被配置为：
    对所述电阻器上的电压进行放大，并且
    将放大后的所述电压转换为所述数字信号。
  8. 根据权利要求1所述的装置，其中，所述电开关单元为继电器或功率运算放大器。
  9. 根据权利要求1所述的装置，其中，所述发射单元包括：
    激光驱动器，其与所述电开关单元连接，用于将电信号转换成光信号；
    光发射次模块，其与所述激光驱动器和所述光纤接口连接，用于在接收到所述激光驱动器发来的所述光信号时，在所述光纤接口上发射所述光信号。
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