KR20130093730A - Method and system for transmitting multi mode optical signals - Google Patents

Method and system for transmitting multi mode optical signals Download PDF

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Publication number
KR20130093730A
KR20130093730A KR1020110142239A KR20110142239A KR20130093730A KR 20130093730 A KR20130093730 A KR 20130093730A KR 1020110142239 A KR1020110142239 A KR 1020110142239A KR 20110142239 A KR20110142239 A KR 20110142239A KR 20130093730 A KR20130093730 A KR 20130093730A
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KR
South Korea
Prior art keywords
optical
mode
signal
receiver
transmitter
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Application number
KR1020110142239A
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Korean (ko)
Inventor
원용욱
채찬병
한상국
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연세대학교 산학협력단
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Priority to KR1020110142239A priority Critical patent/KR20130093730A/en
Publication of KR20130093730A publication Critical patent/KR20130093730A/en

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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
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2581—Multimode transmission
    • 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
    • H04B10/508—Pulse generation, e.g. generation of solitons
    • 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
    • H04B10/60—Receivers
    • H04B10/66—Non-coherent receivers, e.g. using direct detection

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE: A method and a system for transmitting multi-mode optical signals are provided for optimization of optical signal transmission in consideration of environments of an optical receiver. CONSTITUTION: An optical transmitter (100) outputs multi-mode optical signals. A multiplexer (104) multiplexes the optical signals transmitted through a multi-mode optical cable from the optical receiver. An optical receiver (106) receives the optical signals multiplexed by the multiplexer. Some modes of the multi-mode optical signals are allocated to electricity. Other modes of the multi-mode optical signals are allocated to data. [Reference numerals] (100) Optical transmitter; (104) Multiplexer; (110) Optical electricity unit; (112) Optical detection unit

Description

METHOD AND SYSTEM FOR TRANSMITTING MULTI MODE OPTICAL SIGNALS

The present invention relates to a method and system for transmitting optical signals in multiple modes.

Optical transmitters in optical transmission systems generally transmit a single mode optical signal having data to an optical receiver via a single mode optical cable. Thus, in conventional optical transmission systems, there is a limitation of data transmission and single mode optical cables are relatively expensive.

In addition, since the optical transmitter transmits an optical signal without considering the environment of the optical receiver, it is difficult to construct an optimal optical transmission system.

The present invention provides a method and system for optimally transmitting optical signals in consideration of the environment of an optical receiver.

The present invention is to provide a multi-mode optical transmission method and system for constructing an economical and low power / powerless network.

In order to achieve the above object, the multi-mode optical transmission method according to an embodiment of the present invention comprises the steps of transmitting the multi-mode optical signals to the optical receiver; The optical receiver converting some of the transmitted optical signals into electricity; And the optical receiver detecting data from some of the optical signals.

Multi-mode optical transmission method according to another embodiment of the present invention comprises the steps of generating at least one first optical signal by allocating some of the multi-mode as power; Generating at least one second optical signal that assigns another portion of the multiple modes as data; And outputting the generated first optical signal and the second optical signal.

Another multi-mode optical transmission system according to an embodiment of the present invention includes an optical transmitter for outputting multi-mode optical signals; A multiplexer for multiplexing optical signals transmitted from the optical transmitter through a multi-mode optical cable; And an optical receiver for receiving the optical signals multiplexed by the multiplexer. Here, some modes of the optical signals are allocated to power, and other modes of the optical signals are allocated to data.

An optical receiver used in a multi-mode optical transmission system according to an embodiment of the present invention includes an optical electric unit for converting an optical signal having a mode allocated to power into electricity; And a light detector for detecting data of an optical signal having a mode allocated as data.

Since the multi-mode optical transmission method and system according to the present invention transmits the multi-mode optical signals to the optical receiver through the multi-mode optical cable, it is possible to transmit high capacity data. In particular, since the optical receiver converts and utilizes an optical signal in a mode in which power is allocated to electricity and uses a multi-mode optical cable, the system can realize a low power / powerless network.

In addition, the multi-mode optical transmission method and system sets the number of modes according to the environment of the optical receiver, for example, the power and bandwidth required by the subscriber, it is possible to realize an optimized transmission system.

1 is a diagram illustrating a multi-mode optical transmission system according to an embodiment of the present invention.
2 is a flowchart illustrating a multi-mode optical transmission method according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a multi-mode optical transmission system according to an embodiment of the present invention.

Referring to FIG. 1, the multi-mode optical transmission system of the present embodiment is a system for transmitting optical signals of a multi-mode, including an optical transmitter 100, a multi-mode optical cable 102, a multiplexer 104, and an optical receiver. 106 may be included.

The optical transmitter 100 is a device for transmitting optical signals in a multi-mode, and may receive and transmit optical signals from another device, or may generate and output optical signals using a laser and a modulator. Hereinafter, for convenience of explanation, it is assumed that the optical transmitter 100 generates and outputs optical signals of a multi mode.

According to an embodiment of the present invention, the optical transmitter 100 may generate optical signals of a multi-mode, power may be allocated to an optical signal of a specific mode, and the optical signal of another mode may include data to be transmitted. That is, the optical transmitter 100 divides power and data in multiple modes and allocates the power and data to the optical receiver 106. In particular, the optical transmitter 100 may set the modes differently in consideration of the environment of the optical receiver 106 as described below. For example, the optical transmitter 100 may assign power to one of the modes for the particular optical receiver 106 and data for the other modes, and two modes for the other optical receiver 106. You can also assign power to and assign data to the remaining modes.

Multi-mode optical signals output from the optical transmitter 100 are transmitted through the multi-mode optical cable 102. As shown in FIG. 1, the optical signals may be transmitted with different paths within the multi-mode optical cable 102.

The multiplexer 104 multiplexes the multi-mode optical signals transmitted through the multi-mode optical cable 102, and preferably, separates the optical signal of the power allocated mode and the optical signal of the data assigned mode to separate the optical receiver. Provided at 106.

The optical receiver 106 is a device that receives multi-mode optical signals, which may be a subscriber end unit, a device that transmits optical signals to the subscriber end unit, or a data center such as a factory. According to an embodiment of the present invention, the optical receiver 106 includes an optical electrical unit 110 for receiving an optical signal of a power assigned mode and an optical detector 106 for receiving an optical signal of a data assigned mode. It may include.

The photoelectric unit 110 may convert an optical signal of a mode in which power is allocated to electricity, and supply the converted electricity to the photodetector 106. In particular, the photoelectric unit 110 may convert the optical signal into electricity without supplying external power, thereby establishing a low power / no power network for the optical network.

The light detector 112 detects data from an optical signal to which data is assigned. Of course, the light detector 112 may transfer the detected data to the subscriber.

Although not shown in FIG. 1, the optical receiver 106 generates receiver information according to a pilot mode optical signal transmitted from the optical transmitter 100, and transmits the generated receiver information through the multi-mode optical cable 102. It may further include an optical information unit for transmitting to (100). The pilot mode optical signal and corresponding receiver information will be described later.

Hereinafter, a multi-mode optical transmission method of the present invention will be described in detail with reference to the accompanying drawings.

2 is a flowchart illustrating a multi-mode optical transmission method according to an embodiment of the present invention.

Referring to FIG. 2, the optical transmitter 100 generates a pilot mode optical signal and transmits the generated pilot mode optical signal to the optical receiver 106 through the multi-mode optical cable 102 (S200). Of course, the optical transmitter 100 may transmit the pilot mode optical signal through another optical cable, but considering economics, transmit the pilot mode optical signal through the multimode optical cable 102 through which the multimode optical signals are transmitted. It is desirable to.

Subsequently, the optical receiver 106 transmits the optical information signal through the multi-mode optical cable 102, which includes receiver information on power consumption and bandwidth required by the subscriber, for example, according to the transmitted pilot mode optical signal. Transmit to 100 (S202).

Subsequently, the optical transmitter 100 analyzes the transmitted optical information signal to detect receiver information on required power and bandwidth, and the like, and the number of modes to be transmitted, mode allocation for power and data, and the like. Determine (S204). For example, the optical transmitter 100 may allocate power to two modes and different data to the three modes. That is, the optical transmitter 100 generates five optical signals, two of which are related to power, and three optical signals may include different data.

Subsequently, the optical transmitter 100 transmits the generated optical signals through the multi-mode optical cable 102 (S206).

Subsequently, the optical receiver 106 receives the optical signals transmitted through the multi-mode optical cable 102, converts optical signals related to power among the optical signals into electricity and detects data from the optical signals associated with the data. (S208).

In summary, the optical transmitter 100 generates optical signals that allocate power and data to different modes according to the environment of the optical receiver 106, and transmits the optical signals to the optical receiver 106 through the multi-mode optical cable 102. The optical receiver 106 converts some of the transmitted optical signals into electricity and detects data from other optical signals. Of course, when the environment of the optical receiver 106 is changed and more power is needed, the optical transmitter 100 may allocate power to more modes and transmit the corresponding optical signals to the optical receiver 106. The pilot mode optical signal is used to know the environment of the optical receiver 106, but the pilot mode optical signal may be used only during the initial operation of the optical network, but is periodically used to periodically grasp the environment of the optical receiver 106. It may be.

The embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art having ordinary knowledge of the present invention may make various modifications, changes, and additions within the spirit and scope of the present invention. Should be considered to be within the scope of the following claims.

100: optical transmitter 102: multi-mode optical cable
104: multiplexer 106: optical receiver
110: photoelectric unit 112: photo detector

Claims (12)

Transmitting the multi-mode optical signals to the optical receiver;
The optical receiver converting some of the transmitted optical signals into electricity; And
And the optical receiver detecting data from some of the optical signals. The method of claim 1, wherein the optical transmission method,
Transmitting, by the optical transmitter, a pilot mode optical signal to the optical receiver via a multi-mode optical cable;
Transmitting, by the optical receiver, an optical information signal having information on power required and bandwidth according to the transmitted pilot mode optical signal to the optical transmitter through the multi-mode optical cable; And
And assigning, by the optical transmitter, a mode of some of the optical signals as power and allocating modes of other optical signals as data according to the transmitted optical information signal. The method of claim 1, wherein the optical receiver supplies the converted electricity to an optical detector for detecting the data. Allocating some of the multiple modes to power to generate at least one first optical signal;
Allocating another portion of the multiple modes as data to generate one or more second optical signals; And
Outputting the generated first optical signal and the second optical signal. The method of claim 4, wherein the optical transmission method,
Transmitting, by the optical transmitter, a pilot mode optical signal to the optical receiver via a multi-mode optical cable; And
Transmitting, by the optical receiver, an optical information signal having information on power consumption and bandwidth according to the transmitted pilot mode optical signal to the optical transmitter through the multi-mode optical cable;
And the optical transmitter generates the first optical signal and the second optical signal in accordance with the transmitted optical information signal. 6. The method of claim 5, wherein the optical transmitter simultaneously transmits the first optical signal and the second optical signal to the optical receiver via a multimode optical cable. An optical transmitter for outputting multi-mode optical signals;
A multiplexer for multiplexing optical signals transmitted from the optical transmitter through a multi-mode optical cable; And
An optical receiver for receiving the optical signals multiplexed by the multiplexer,
And a mode of some of the optical signals is assigned power and another mode of the other optical signals is assigned data. The optical transmitter of claim 7, wherein the optical transmitter generates a pilot mode optical signal and transmits the pilot mode optical signal to the optical receiver through the multi-mode optical cable, and the optical receiver is configured according to the transmitted power and bandwidth according to the transmitted pilot mode optical signal. Transmits an optical information signal having information to the optical transmitter through the multi-mode optical cable, and the optical transmitter separately allocates power and data to modes of the optical signals according to the transmitted optical information signal. Multimode optical transmission system. The method of claim 7, wherein the optical receiver,
An optical electric unit that receives an optical signal having a mode allocated to the electric power and converts the optical signal into electricity; And
Including a light detector for detecting data by receiving an optical signal having a mode assigned to the data,
And the photoelectric unit supplies the electricity to the photodetector. An optical electric unit converting an optical signal having a mode allocated to electric power into electricity; And
And a light detector for detecting data of an optical signal having a mode assigned as data. The optical receiver of claim 10, wherein the photoelectric unit supplies the electricity to the photodetector. The method of claim 10, wherein the optical receiver,
An optical information unit for generating an optical information signal having information on the required power and bandwidth according to the pilot mode optical signal transmitted from the optical transmitter, and transmitting the generated optical information signal to the optical transmitter through a multi-mode optical cable And an optical receiver for use in a multi-mode optical transmission system.
KR1020110142239A 2011-12-26 2011-12-26 Method and system for transmitting multi mode optical signals KR20130093730A (en)

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KR1020110142239A KR20130093730A (en) 2011-12-26 2011-12-26 Method and system for transmitting multi mode optical signals

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KR1020110142239A KR20130093730A (en) 2011-12-26 2011-12-26 Method and system for transmitting multi mode optical signals

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101465863B1 (en) * 2013-03-05 2014-11-27 연세대학교 산학협력단 Optical network and method of assigning bandwidth in the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101465863B1 (en) * 2013-03-05 2014-11-27 연세대학교 산학협력단 Optical network and method of assigning bandwidth in the same

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