JPH04110037U - Optical communication equipment - Google Patents
Optical communication equipmentInfo
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- JPH04110037U JPH04110037U JP1403591U JP1403591U JPH04110037U JP H04110037 U JPH04110037 U JP H04110037U JP 1403591 U JP1403591 U JP 1403591U JP 1403591 U JP1403591 U JP 1403591U JP H04110037 U JPH04110037 U JP H04110037U
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- 230000003287 optical effect Effects 0.000 title claims abstract description 101
- 238000004891 communication Methods 0.000 title claims abstract description 35
- 238000006243 chemical reaction Methods 0.000 claims abstract description 41
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 239000013307 optical fiber Substances 0.000 abstract description 17
- 238000005259 measurement Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 230000010365 information processing Effects 0.000 description 6
- 238000012790 confirmation Methods 0.000 description 4
- 230000008054 signal transmission Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004397 blinking Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Abstract
(57)【要約】
【構成】 光通信装置７ａ・７ｂは、情報信号を電気信
号から光信号の信号形態に変換可能な電気光変換回路４
と、情報信号を光信号から電気信号の信号形態に変換可
能な光電気変換回路５とを有し、情報信号を所定以上の
光量を有した光信号で光ファイバ８を介して送受信する
ものである。そして、上記の電気光変換回路４には、電
気信号の電流値に応じた光量で光信号を出力する発光ダ
イオード４ａが設けられており、この発光ダイオード４
ａは、電流値を変更可能な送信レベル変更回路９に接続
されている。
【効果】 光信号の光量が送信レベル変更回路９により
設定されることになることから、光量の測定時に、光量
を変更する例えば光アッテネータの取り付け作業が不要
になり、結果として作業者の負担の低減および測定時間
の短縮化を可能にすることになる。
(57) [Summary] [Configuration] The optical communication devices 7a and 7b include an electro-optical conversion circuit 4 capable of converting an information signal from an electrical signal to an optical signal.
and an opto-electric conversion circuit 5 capable of converting an information signal from an optical signal to an electrical signal form, and transmits and receives the information signal as an optical signal having a predetermined amount of light or more via an optical fiber 8. be. The electro-optical conversion circuit 4 is provided with a light emitting diode 4a that outputs an optical signal with an amount of light corresponding to the current value of the electric signal.
a is connected to a transmission level changing circuit 9 that can change the current value. [Effect] Since the light intensity of the optical signal is set by the transmission level changing circuit 9, there is no need to change the light intensity, for example, installing an optical attenuator, when measuring the light intensity, and as a result, the burden on the operator is reduced. This makes it possible to reduce the amount of noise and shorten the measurement time.
Description
【０００１】0001
本考案は、光ファイバ等の光伝送路を用いて行われる光通信に供される光通信 装置に関するものである。 This invention is an optical communication system used for optical communication using optical transmission lines such as optical fibers. It is related to the device.
【０００２】0002
近年、コンピュータ等の発達による情報処理能力の増大に伴い、情報信号の送 受信時の高密度化および高速化が望まれることから、情報信号の送受信には、ノ イズの混入率が低く、且つ多重送信が可能な光伝送路を用いた光通信が多用され るようになっている。 In recent years, with the increase in information processing capacity due to the development of computers, etc., the transmission of information signals has become more difficult. Since higher density and faster reception are desired, there is a need for high-density and high-speed reception of information signals. Optical communications using optical transmission lines that have a low contamination rate and can perform multiplex transmission are widely used. It has become so.
【０００３】 通常、上記の光通信には、情報信号を光信号の信号形態で送受信可能な光通信 装置が使用されるようになっており、従来の光通信装置は、図２に示すように、 情報信号を通信に適した信号形態に変換する信号送信回路５１および情報信号を 電気信号から光信号に変換する電気光変換回路５２からなる光信号送信部５５と 、情報信号を光信号から電気信号に変換する光電気変換回路５３および情報信号 を情報処理に適した信号形態に変換する信号受信回路５４からなる光信号受信部 ５６とからなっている。0003 Usually, the optical communication mentioned above includes optical communication that can send and receive information signals in the form of optical signals. The conventional optical communication device is as shown in FIG. A signal transmission circuit 51 that converts the information signal into a signal form suitable for communication and the information signal an optical signal transmitter 55 consisting of an electro-optical conversion circuit 52 that converts an electrical signal into an optical signal; , a photoelectric conversion circuit 53 that converts an information signal from an optical signal to an electrical signal, and an information signal. an optical signal receiving section consisting of a signal receiving circuit 54 that converts the signal into a signal form suitable for information processing; It consists of 56.
【０００４】 そして、上記の光通信装置は、光信号送信部５５と光信号受信部５６とが光伝 送路となる光ファイバ５７を介して接続されるようになっており、例えば一方の 光通信装置の光信号送信部５５から出力された情報信号を光ファイバ５７を介し て他方の光通信装置の光電気変換回路５３に入力させることで、光信号の信号形 態で情報信号を送受信させるようになっている。0004 In the optical communication device described above, the optical signal transmitter 55 and the optical signal receiver 56 are They are connected via an optical fiber 57 that serves as a transmission path, and for example, one The information signal output from the optical signal transmitter 55 of the optical communication device is transmitted through the optical fiber 57. The signal form of the optical signal is inputted to the opto-electric conversion circuit 53 of the other optical communication device. It is designed to transmit and receive information signals in the same state.
【０００５】[0005]
しかしながら、上記従来の光通信装置では、通信設備の立ち上げ時や予防保全 時の必須の作業となる光信号の光量の測定作業に下記の問題を生じている。 However, with the conventional optical communication equipment mentioned above, it is difficult to use the The following problems have arisen in the work of measuring the amount of light of an optical signal, which is an essential work at times.
【０００６】 即ち、光信号を光ファイバ５７を介して光電気変換回路５３に確実に到達させ るには、光電気変換回路５３に到達した光信号の光量が所定量以上である必要が ある。従って、この光通信装置を組み込んだ通信設備には、光信号の光量の測定 が立ち上げ時や予防保全時に必須の作業になっている。[0006] That is, the optical signal is reliably delivered to the opto-electric conversion circuit 53 via the optical fiber 57. In order to achieve this, the amount of light of the optical signal that has reached the opto-electrical conversion circuit 53 must be greater than or equal to a predetermined amount. be. Therefore, communication equipment incorporating this optical communication device requires measurement of the amount of light of the optical signal. This has become an essential task during start-up and preventive maintenance.
【０００７】 この際、通常、光信号の光量の測定は、フィルター等で光量を任意に変化させ ることができる光アッテネータ５８で光信号の光量を所定量減衰させ、この減衰 された光信号が光電気変換回路５３に到達するか否かで行われるようになってい る。従って、光量を測定する場合には、例えば光ファイバ５７を電気光変換回路 ５２から抜脱し、抜脱した光ファイバ５７と電気光変換回路５２との間に上記の 光アッテネータ５８を介装させる作業が必要になっている。ところが、この光フ ァイバ５７の着脱作業は、作業環境が低下した現場で行われるため、作業者に余 計な負担をかけると共に、測定時間を遅延させるという問題を招来している。[0007] At this time, the light intensity of the optical signal is usually measured by arbitrarily changing the light intensity using a filter, etc. The light intensity of the optical signal is attenuated by a predetermined amount with an optical attenuator 58 that can be The determination is made depending on whether the optical signal received reaches the opto-electrical conversion circuit 53 or not. Ru. Therefore, when measuring the amount of light, for example, the optical fiber 57 is connected to an electro-optical conversion circuit. 52, and the above-mentioned optical fiber 57 is removed from the optical fiber 52, and the above-mentioned It is now necessary to install an optical attenuator 58. However, this optical filter The work of attaching and detaching the fiber 57 is carried out at the site where the working environment is degraded, so there is no need for workers to This poses a problem in that it imposes an enormous burden and delays measurement time.
【０００８】 従って、本考案においては、光信号の光量を測定する際に光ファイバ５７の着 脱作業が不要な光通信装置を提供することを目的としている。[0008] Therefore, in the present invention, when measuring the light intensity of an optical signal, the optical fiber 57 is The purpose is to provide an optical communication device that does not require labor.
【０００９】[0009]
本考案の光通信装置は、上記課題を解決するために、情報信号を電気信号から 光信号の信号形態に変換可能な電気光変換回路と、情報信号を光信号から電気信 号の信号形態に変換可能な光電気変換回路とを有しており、上記情報信号を所定 以上の光量を有した光信号の信号形態で、光伝送路である光ファイバを介して送 受信する光通信装置において、 上記電気光変換回路には、電気信号の電流値に応じた光量で光信号を出力する 例えば発光ダイオード等の電気光変換部材が設けられている。そして、この電気 光変換部材は、上記電流値を変更可能な電流変更手段となる抵抗器および切換え スイッチからなる送信レベル変更回路に接続されていることを特徴としている。 In order to solve the above problems, the optical communication device of the present invention converts information signals from electrical signals. An electro-optical conversion circuit that can convert the signal form of an optical signal, and an electrical signal converter that converts information signals from optical signals to electrical signals. It is equipped with a photoelectric conversion circuit that can convert the above information signal into a specified signal format. A signal form of an optical signal with a light intensity of In the receiving optical communication device, The above electro-optical conversion circuit outputs an optical signal with an amount of light according to the current value of the electric signal. For example, an electro-optical conversion member such as a light emitting diode is provided. And this electricity The light conversion member includes a resistor and a switch that serve as current changing means that can change the above current value. It is characterized by being connected to a transmission level changing circuit consisting of a switch.
【００１０】0010
上記の構成によれば、電気光変換回路の電気光変換部材は、電気信号の電流値 に応じた光量で光信号を出力するため、光信号は、電流変更手段により光量が設 定されることになる。従って、光通信装置は、光量の測定時に、光量を変更する 例えば光アッテネータの取り付けが不要になり、結果として光アッテネータの取 り付けに要していた光伝送路の着脱作業が不要になる。そして、この光伝送路の 着脱作業の省略は、光伝送路の着脱作業時の取り付けミス等を解消させることか ら、作業者の負担を低減させることになると共に、測定時間を短縮化させること になる。 According to the above configuration, the electro-optical conversion member of the electro-optical conversion circuit has a current value of an electric signal. In order to output an optical signal with a light intensity according to the It will be determined. Therefore, the optical communication device changes the amount of light when measuring the amount of light. For example, it becomes unnecessary to install an optical attenuator; This eliminates the need for attaching and detaching the optical transmission line, which was previously required for installation. And this optical transmission line Does omitting the attachment/detachment work eliminate installation errors, etc. when attaching/detaching the optical transmission line? This reduces the burden on the worker and shortens the measurement time. become.
【００１１】[0011]
本考案の一実施例を図１に基づいて説明すれば、以下の通りである。 An embodiment of the present invention will be described below with reference to FIG.
【００１２】 本実施例に係る光通信装置は、図１に示すように、情報信号を光通信に適した 信号形態に変換する光信号送信部１と、情報信号を情報処理に適した信号形態に 変換する光信号受信部２とを有しており、光信号送信部１は、図示しないＣＰＵ 等の情報処理回路から出力された情報信号を通信に適した信号形態に変換する信 号送信回路３と、この信号送信回路３に接続された電気光変換回路４とからなっ ている。0012 As shown in FIG. 1, the optical communication device according to this embodiment converts information signals into An optical signal transmitter 1 that converts the information signal into a signal form and converts the information signal into a signal form suitable for information processing. The optical signal transmitter 1 includes a CPU (not shown). A signal that converts information signals output from information processing circuits such as It consists of a signal transmission circuit 3 and an electro-optical conversion circuit 4 connected to this signal transmission circuit 3. ing.
【００１３】 上記の電気光変換回路４は、所定範囲の電流値で光量が直線的に変化する電気 光変換部材である発光ダイオード４ａを有しており、この発光ダイオード４ａに は、信号送信回路３から出力された情報信号が電気信号の信号形態で流れるよう になっている。そして、上記の電気光変換回路４は、発光ダイオード４ａが情報 信号の通過時に点滅することで、情報信号を電気信号から光信号の信号形態に変 換して出力するようになっている。[0013] The above-mentioned electro-optical conversion circuit 4 is an electric light converter circuit 4 in which the amount of light changes linearly within a predetermined range of current values. It has a light emitting diode 4a which is a light conversion member, and this light emitting diode 4a has a so that the information signal output from the signal transmitting circuit 3 flows in the form of an electrical signal. It has become. In the above electro-optical conversion circuit 4, the light emitting diode 4a transmits information. By blinking when a signal passes, it changes the information signal from an electrical signal to an optical signal. It is designed to convert and output.
【００１４】 一方、光信号受信部２は、所定以上の光量を有した光信号の受光時にＯＮ状態 となるフォトトランジスタ５ａを有した光電気変換回路５と、通信に適した信号 形態から情報処理に適した信号形態に変換する信号受信回路６とからなっており 、上記の光電気変換回路５は、情報信号を光信号から電気信号の信号形態に変換 するようになっている。そして、上記の光信号送信部１と光信号受信部２とは、 一方の光通信装置７ａの光信号送信部１が他方の光通信装置７ｂの光信号受信部 ２に光伝送路である光ファイバ８を介して接続されるようになっている。[0014] On the other hand, the optical signal receiving unit 2 is in an ON state when receiving an optical signal having a predetermined amount of light or more. A photoelectric conversion circuit 5 having a phototransistor 5a and a signal suitable for communication. It consists of a signal receiving circuit 6 that converts the signal form into a signal form suitable for information processing. , the above-mentioned opto-electrical conversion circuit 5 converts the information signal from an optical signal into an electrical signal form. It is supposed to be done. The above-mentioned optical signal transmitting section 1 and optical signal receiving section 2 are as follows: The optical signal transmitter 1 of one optical communication device 7a is the optical signal receiver of the other optical communication device 7b. 2 via an optical fiber 8 which is an optical transmission line.
【００１５】 また、上記の光信号送信部１には、電流変更手段である送信レベル変更回路９ が接続されている。この送信レベル変更回路９には、複数の切換え端子１０ａ〜 １０ｅを有した例えばロータリスイッチ等の切換えスイッチ１０が設けられてお り、図中右端の切り換え端子１０ａは、上述の電気光変換回路４の発光ダイオー ド４ａのカソード側に接続されている。[0015] The optical signal transmitter 1 also includes a transmission level changing circuit 9 which is a current changing means. is connected. This transmission level changing circuit 9 includes a plurality of switching terminals 10a to 10a. A changeover switch 10, such as a rotary switch, having a switch 10e is provided. The switching terminal 10a at the right end in the figure is connected to the light emitting diode of the electro-optical conversion circuit 4 described above. The electrode 4a is connected to the cathode side.
【００１６】 また、他の切換え端子１０ｂ〜１０ｅは、抵抗器１１ａ〜１１ｄを介して発光 ダイオード４ａのカソード側に接続されており、上記の抵抗器１１ａ〜１１ｄは 、抵抗値がそれぞれ異なった値に設定されている。そして、上記の切換え端子１ ０ａ〜１０ｅの共通端子１０ｆは、ＧＮＤに接続されており、切換えスイッチ１ ０は、切換え端子１０ａ〜１０ｅと共通端子１０ｆとの接続状態を切り換えるこ とで、発光ダイオード４ａに流れる電流値を段階的に変更させるようになってい る。[0016] In addition, other switching terminals 10b to 10e emit light via resistors 11a to 11d. It is connected to the cathode side of the diode 4a, and the above-mentioned resistors 11a to 11d are connected to the cathode side of the diode 4a. , the resistance values are set to different values. And the above switching terminal 1 The common terminal 10f of 0a to 10e is connected to GND, and the changeover switch 1 0 is used to switch the connection state between the switching terminals 10a to 10e and the common terminal 10f. This allows the current value flowing through the light emitting diode 4a to be changed in stages. Ru.
【００１７】 上記の構成において、光通信装置７ａ・７ｂの動作について説明する。[0017] In the above configuration, the operation of the optical communication devices 7a and 7b will be explained.
【００１８】 先ず、情報信号を通常に送信する場合には、切換えスイッチ１０の共通端子１ ０ｆと切換え端子１０ａとが接続状態にされ、電気光変換回路４の発光ダイオー ド４ａのカソード側が短絡した状態にされる。これにより、発光ダイオード４ａ は、最大の電流が流れることで最大の光量で発光することになり、この発光ダイ オード４ａを有した電気光変換回路４は、情報信号を最大の光量を有した光信号 に変換して出力することになる。[0018] First, when transmitting an information signal normally, the common terminal 1 of the changeover switch 10 0f and the switching terminal 10a are connected, and the light emitting diode of the electro-optical conversion circuit 4 is connected. The cathode side of the node 4a is brought into a short-circuited state. As a result, the light emitting diode 4a When the maximum current flows, the light emitting diode emits the maximum amount of light. The electro-optical conversion circuit 4 having the ode 4a converts the information signal into an optical signal having the maximum amount of light. It will be converted and output.
【００１９】 光信号に変換された情報信号は、光ファイバ８を介して光電気変換回路５に送 信され、光電気変換回路５のフォトトランジスタ５ａで受光されることになる。[0019] The information signal converted into an optical signal is sent to the opto-electric conversion circuit 5 via the optical fiber 8. The light is transmitted and received by the phototransistor 5a of the photoelectric conversion circuit 5.
【００２０】 そして、フォトトランジスタ５ａは、受光によりＯＦＦ状態からＯＮ状態に切り 換わることになり、光電気変換回路５は、情報信号を光信号から電気信号の信号 形態に変換することになる。この後、電気信号に変換された情報信号は、信号受 信回路６で情報処理に適した信号形態に変換され、光通信装置７ａ・７ｂ間の送 受信が完了することになる。[0020] The phototransistor 5a is switched from the OFF state to the ON state by receiving light. The photoelectric conversion circuit 5 converts the information signal from an optical signal to an electrical signal. It will be converted into a form. After this, the information signal converted to an electrical signal is sent to the signal receiver. The signal is converted into a signal format suitable for information processing by the communication circuit 6 and transmitted between the optical communication devices 7a and 7b. The reception will be completed.
【００２１】 次に、情報信号の送信状態を検査する場合には、切換えスイッチ１０の共通端 子１０ｆが切換え端子１０ａ〜１０ｅに接続されることになり、電気光変換回路 ４の発光ダイオード４ａは、抵抗器１１ａ〜１１ｄを介してＧＮＤに接続される ことになる。これにより、発光ダイオード４ａを流れる電流値は、抵抗器１１ａ 〜１１ｄで制限されたものになり、発光ダイオード４ａの発光量は、制限された 電流値に比例して減衰することになる。そして、この減衰した発光量で光信号に 変換された情報信号は、光ファイバ８を介して光電気変換回路５に送信され、光 電気変換回路５のフォトトランジスタ５ａで受光されることになる。[0021] Next, when inspecting the transmission state of the information signal, the common terminal of the changeover switch 10 is The terminal 10f is connected to the switching terminals 10a to 10e, and the electro-optical conversion circuit No. 4 light emitting diode 4a is connected to GND via resistors 11a to 11d. It turns out. As a result, the current value flowing through the light emitting diode 4a changes to the value of the current flowing through the resistor 11a. ~11d, and the amount of light emitted from the light emitting diode 4a is limited. It will attenuate in proportion to the current value. This attenuated amount of light is then converted into an optical signal. The converted information signal is transmitted to the opto-electric conversion circuit 5 via the optical fiber 8, and is converted into an optical The light is received by the phototransistor 5a of the electrical conversion circuit 5.
【００２２】 この際、上記のフォトトランジスタ５ａは、所定以上の光量を受光した時に、 ＯＦＦ状態からＯＮ状態に切り換わるようになっており、例えば情報信号の受信 時に受信確認動作を実行する動作モードに光通信装置７ａ・７ｂを設定した場合 には、光通信装置７ａ・７ｂが所定以上の受光量の場合にのみ受信確認動作を実 行することになる。従って、光電気変換回路５へ到達した光信号の光量は、この 受信確認動作を確認することで、所定以上であるか否かを判定することが可能に なり、光量測定は、受信確認動作の確認と切換えスイッチ１０の切り換え操作に よる電流値の変更とで行なえることになる。[0022] At this time, when the phototransistor 5a receives a predetermined amount of light or more, It is designed to switch from an OFF state to an ON state, for example when receiving an information signal. When the optical communication devices 7a and 7b are set to an operation mode in which the reception confirmation operation is executed at the same time. In this case, the optical communication devices 7a and 7b execute the reception confirmation operation only when the amount of light received is greater than a predetermined amount. I will go there. Therefore, the amount of light of the optical signal reaching the photoelectric conversion circuit 5 is By checking the reception confirmation operation, it is possible to determine whether the reception is above the specified value or not. Therefore, light intensity measurement is performed by checking the reception confirmation operation and switching the changeover switch 10. This can be done by changing the current value.
【００２３】 このように、本実施例の光通信装置７ａ・７ｂは、切換えスイッチ１０の操作 による電流値の変更で光信号の光量を任意に設定できるため、光量の測定時に光 アッテネータが不要になり、結果として光アッテネータの取り付けに要していた 光ファイバ８の着脱作業が不要になっている。そして、この光ファイバ８の着脱 作業の省略は、光ファイバ８の着脱作業時の取り付けミス等を解消させることか ら、作業者の負担を低減させることになると共に、測定時間を短縮化させること になり、特に、これらの負担の低減と測定時間の短縮化は、光量測定が作業環境 の低下した現場で行われる場合に顕著になる。[0023] In this way, the optical communication devices 7a and 7b of this embodiment can be operated by operating the changeover switch 10. Since the light intensity of the optical signal can be set arbitrarily by changing the current value, the light intensity is Attenuator is no longer required, resulting in the time required to install optical attenuator The work of attaching and detaching the optical fiber 8 is no longer necessary. Then, the attachment and detachment of this optical fiber 8 Does omitting the work eliminate installation errors when attaching and detaching the optical fiber 8? This reduces the burden on the worker and shortens the measurement time. In particular, reducing these burdens and shortening measurement time will make light measurement easier in the work environment. This becomes noticeable when the work is carried out at a site where the temperature is low.
【００２４】 尚、本実施例においては、切換えスイッチ１０による抵抗器１１ａ〜１１ｄの 切り換え操作で発光ダイオード４ａの電流値を段階的に変更させるようになって いるが、これに限定されることはない。即ち、例えばボリューム等で抵抗値を連 続的に変更させるようになっていても良く、この場合には、より詳細な光量の経 時変化等を測定することが可能になる。[0024] In this embodiment, the resistors 11a to 11d are controlled by the changeover switch 10. The current value of the light emitting diode 4a can be changed step by step by switching operation. However, it is not limited to this. In other words, for example, by connecting resistance values with a volume, etc. It may also be changed continuously; in this case, the light amount may be changed in more detail over time. It becomes possible to measure changes over time.
【００２５】[0025]
本考案の光通信装置は、以上のように、情報信号を電気信号から光信号の信号 形態に変換可能な電気光変換回路には、電気信号の電流値に応じた光量で光信号 を出力する電気光変換部材が設けられており、この電気光変換部材は、上記電流 値を変更可能な電流変更手段に接続されている構成である。 As described above, the optical communication device of the present invention converts information signals from electrical signals to optical signals. An electro-optical conversion circuit that can convert optical signals into optical signals with an amount of light corresponding to the current value of the electrical signals. An electro-optical conversion member is provided which outputs the current. It has a configuration in which it is connected to a current changing means that can change the value.
【００２６】 これにより、光信号の光量が電流変更手段により設定されることになることか ら、光量の測定時に、光量を変更する例えば光アッテネータの取り付け作業が不 要になり、結果として作業者の負担を低減させることが可能になると共に、測定 時間を短縮させることが可能になるという効果を奏する。[0026] This means that the light intensity of the optical signal is set by the current changing means. Therefore, when measuring the amount of light, it is not necessary to change the amount of light, such as installing an optical attenuator. As a result, it becomes possible to reduce the burden on the worker, and the measurement This has the effect of making it possible to shorten the time.
【図１】光ファイバを介して接続された光通信装置のブ
ロック図である。FIG. 1 is a block diagram of an optical communication device connected via an optical fiber.
【図２】光通信装置の光量測定時の説明図である。FIG. 2 is an explanatory diagram when measuring the amount of light of an optical communication device.
１ 光信号送信部 ２ 光信号受信部 ３ 信号送信回路 ４ 電気光変換回路 ４ａ 発光ダイオード（電気光変換部材） ５ 光電気変換回路 ５ａ フォトトランジスタ ６ 信号受信回路 ７ａ・７ｂ 光通信装置 ８ 光ファイバ（光伝送路） ９ 送信レベル変更回路（電流変更手段） １０ 切換えスイッチ １１ａ〜１１ｄ 抵抗器 1 Optical signal transmitter 2 Optical signal receiving section 3 Signal transmission circuit 4 Electro-optical conversion circuit 4a Light emitting diode (electro-optical conversion member) 5 Photoelectric conversion circuit 5a Phototransistor 6 Signal receiving circuit 7a/7b Optical communication equipment 8 Optical fiber (optical transmission line) 9 Transmission level changing circuit (current changing means) 10 Changeover switch 11a-11d resistor
Claims (1)
に変換可能な電気光変換回路と、情報信号を光信号から
電気信号の信号形態に変換可能な光電気変換回路とを有
し、上記情報信号を所定以上の光量を有した光信号で光
伝送路を介して送受信する光通信装置において、上記電
気光変換回路には、電気信号の電流値に応じた光量で光
信号を出力する電気光変換部材が設けられており、この
電気光変換部材は、上記電流値を変更可能な電流変更手
段に接続されていることを特徴とする光通信装置。1. An electro-optical conversion circuit capable of converting an information signal from an electrical signal to an optical signal format; and an opto-electric conversion circuit capable of converting an information signal from an optical signal to an electrical signal format, In an optical communication device that transmits and receives the information signal as an optical signal having a predetermined amount of light or more through an optical transmission line, the electro-optical conversion circuit outputs an optical signal with a light amount that corresponds to the current value of the electric signal. An optical communication device characterized in that an electro-optic converting member is provided, and the electro-optic converting member is connected to current changing means that can change the current value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1403591U JPH04110037U (en) | 1991-03-12 | 1991-03-12 | Optical communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1403591U JPH04110037U (en) | 1991-03-12 | 1991-03-12 | Optical communication equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04110037U true JPH04110037U (en) | 1992-09-24 |
Family
ID=31901741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1403591U Pending JPH04110037U (en) | 1991-03-12 | 1991-03-12 | Optical communication equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04110037U (en) |
-
1991
- 1991-03-12 JP JP1403591U patent/JPH04110037U/en active Pending
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