JP2008164655A - Connector switch for controlling optical output - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that an optical transmission module continues an optical output externally since there is no control for stopping the optical output when withdrawing an optical fiber on the optical output side of the optical transmission module. <P>SOLUTION: In the fiber inserting port of the optical transmission module, a switch is installed which controllably stops or reduces the optical output through activation of an optical output control circuit of the optical transmission module when the optical fiber is withdrawn. As one example, on the lower face of the fiber inserting port of the optical transmission module, there are provided two conductors one of which is given elasticity. When the optical fiber is withdrawn from the optical transmission module, the two conductors are put in an open state, then the optical control circuit controls so as not to perform the optical output. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an optical transmission module for performing optical communication.

  As a representative example of a receptacle-type pluggable optical transmission module (hereinafter referred to as optical transmission module) that directly inserts an optical fiber and performs optical transmission, MSA (Multi Source Agreement: a form that is commercialized with specifications determined by a group of multiple companies) XFP, SFP, X2, XENPAK, XPAK, etc. standardized in

  Such an optical transmission module is mainly inserted into a casing of the transmission device, supplied with power from the transmission device, and performs optical transmission by inserting an optical fiber. In addition, the transmission apparatus can also perform control such as ON or OFF of the optical output of the optical transmission module.

For example, the Internet <http: // www. xfppmsa. org>

  In the conventional transmission device, the optical output of the optical transmission module can be controlled to be turned on or off, etc., but the interlocking for controlling the optical output between the transmission device and the optical fiber or between the optical fiber and the optical transmission module. There is no. For this reason, even if the optical fiber on the light output side is removed, the transmission device cannot stop the light output of the light transmission module, and the light transmission module continues to emit light.

  In order to solve the above-mentioned problems, the optical output control circuit of the optical transmission module works when the optical fiber is pulled out to the fiber insertion port of the optical transmission module, and performs control to prevent the laser light from being output or to reduce the optical output. Thus, unnecessary emission of laser light can be prevented.

  In the conventional optical transmission module, there is no interlocking between the transmission device and the optical fiber, or between the optical fiber and the optical transmission module, so that the optical transmission side is disconnected even if the optical fiber on the optical output side is disconnected. The optical output of the transmission module cannot be stopped, and the optical transmission module will continue to emit light. However, in the present invention, a switch interlocked with the optical output control circuit at the fiber insertion port of the optical transmission module When the optical fiber is pulled out, the light output control circuit of the light transmission module works, and the light output can be controlled to be not reduced or reduced.

  A switch of the present invention is provided in a receptacle of a pluggable module such as XENPAK, X2, XPAK, SFP, and XFP, and control is performed so that the optical output is not output or reduced when the fiber is pulled out.

  FIG. 1 is a diagram showing an overall configuration including an optical transmission module and a transmission apparatus according to the present invention. In FIG. 1, the connector portion of the optical fiber 3 is mounted on the optical transmission module 2 and mounted on the optical transmission device 1.

FIG. 2 shows a cross-sectional view of an optical transmission module that performs optical transmission and a simplified diagram of an internal control circuit. In FIG.
4 is an optical fiber, 5 is an optical transmission module case, 6 is a connector into which an optical fiber is inserted, 7 is an elastic conductor, 8 is an electrical conductor, 9 is a laser module serving as a light output source, and 10 is a laser module. An IC that controls the output of light, 11 is a pull-down resistor, 12 is a power source that controls the IC that controls the light output of the laser module, and 13 is a signal ground.

Two conductors 7 and 8 are provided on the lower surface of the fiber insertion port of the optical transmission module, and one conductor 7 is given elasticity. FIG. 2 shows a state in which the optical fiber is inserted into the optical transmission module. When the optical fiber 4 is inserted, the elastic body 7 falls down and comes into contact with one of the conductors 8 so that the power supply 12 and the IC 10 are in a conductive state. Thus, the light control circuit including the IC 10 performs control to output light.
On the other hand, FIG. 3 shows a simplified diagram of the state and internal circuit when the optical fiber is removed from the optical transmission module. When the optical fiber is removed from the optical transmission module, the two conductors 7 and 8 are opened, and the power source 12 and the IC 10 are brought into a non-conductive state, whereby the power source of the IC 10 is grounded to the ground, and the optical control including the IC 10 is performed. The circuit performs control that does not emit light.

  In this way, the optical fiber is pulled out from the optical transmission side of the optical transmission module on the side of the fiber insertion port of the optical transmission module, so that it operates in either the top, bottom, left or right direction. This switch can be realized by providing the optical transmission module with a switch that does not output or reduces the optical output of the optical transmission module in conjunction with the optical output control circuit.

  In addition, two or more conductors are provided on the side surface of the fiber insertion port of the optical transmission module, the one or more conductors have elasticity, and when the optical fiber is inserted into the optical transmission module, the elastic body Falls, conducts with other conductors, and when the optical fiber is pulled out, the elastic body returns to the original and is open, and by using the conduction between the conductors with the insertion and removal of the optical fiber, opening, The optical output of the optical transmission module can be controlled.

  Furthermore, the optical output control of the optical transmission module is not limited to the mechanical switch as described above, but a light emitting diode is provided on the side of the fiber insertion port of the optical transmission module, and the side of the fiber insertion port of the optical transmission module. A photodiode is provided in the direction of the direction of the light emitting diode, and the optical fiber is removed from the optical transmission side of the optical transmission module, so that the photodiode is blocked by the optical fiber when the optical fiber is inserted into the optical transmission module. It can also be realized by using an optical switch that receives the light of the light emitting diode and interlocks the signal with the light output control circuit of the light transmission module so as not to output or reduce the light output of the light transmission module. .

  In addition, a reflection lens is provided in the direction of the direction of the light emitting diode, and a photodiode that receives light of the light emitting diode through the reflection lens inside the light transmission module is provided, and the optical fiber is pulled out of the light transmission module. The control mode may be such that the optical photodiode of the light emitting diode receives the signal and interlocks the signal with the optical output control circuit of the optical transmission module so as not to output or reduce the optical output of the optical transmission module.

1 is an overview of the overall configuration of an optical transmission module including an optical transmission device. It is a figure explaining the optical output control of the optical transmission module in this invention. It is a figure explaining the optical output control of the optical transmission module in this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Optical transmission apparatus, 2 ... Optical transmission module, 3 ... Optical fiber, 4 ... Optical fiber, 5 ... Optical transmission module case, 6 ... Connector in which optical fiber is inserted / extracted, 7. .. Conductor with elasticity, 8... Conductor, 9... Laser module serving as a light output source, 10... IC controlling the light output of the laser module, 11.. Pull-down resistor, 12 ... Power supply for controlling the IC that controls the optical output of the laser module, 13 ... Signal ground

Claims (4)

  In a receptacle-type pluggable optical transmission module that performs optical transmission by directly inserting an optical fiber, it operates in either the top, bottom, left, or right direction by pulling the optical fiber from the optical transmission side of the optical transmission module at the side of the optical fiber insertion port An optical transmission module comprising a switch for causing the movement to interlock with an optical output control circuit inside the optical transmission module and not to output or reduce an optical output of the optical transmission module.   There are two or more conductors on the side of the fiber insertion port of the optical transmission module. One or more conductors are made elastic, and when the optical fiber is inserted into the optical transmission module, the elastic body collapses. When the optical fiber is pulled out, the elastic body returns to its original state and opens, and the conductor does not emit or reduce the light output of the optical transmission module. An optical transmission module, wherein the conductor and an internal control circuit are connected so that optical output control can be performed.   A light emitting diode is provided on the side of the fiber insertion port of the optical transmission module, and a photodiode is provided on the side of the fiber insertion port of the optical transmission module and in the direction of the light emitting diode. When the optical fiber is inserted into the optical transmission module, the photodiode receives light from the light-emitting diode blocked by the optical fiber and links the signal to the optical output control circuit of the optical transmission module. An optical transmission module that performs control to prevent or reduce the optical output of the optical transmission module.   A light emitting diode is provided on the side surface of the fiber insertion port of the light transmission module, and a reflection lens is provided on the side surface of the fiber insertion port of the light transmission module and in the direction of the light emitting diode. It has a photodiode that receives light inside the optical transmission module, and when the optical fiber is removed from the optical transmission module, the optical photodiode of the light emitting diode receives it and interlocks the signal with the optical output control circuit of the optical transmission module An optical transmission module that performs control to prevent or reduce the optical output of the optical transmission module.

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