CN111262622A - Optical fiber line bypass protection device and method - Google Patents
Optical fiber line bypass protection device and method Download PDFInfo
- Publication number
- CN111262622A CN111262622A CN202010039645.1A CN202010039645A CN111262622A CN 111262622 A CN111262622 A CN 111262622A CN 202010039645 A CN202010039645 A CN 202010039645A CN 111262622 A CN111262622 A CN 111262622A
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- Prior art keywords
- locking
- optical switch
- protection device
- bypass
- locking optical
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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
- H04B10/03—Arrangements for fault recovery
- H04B10/038—Arrangements for fault recovery using bypasses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/35—Optical coupling means having switching means
- G02B6/354—Switching arrangements, i.e. number of input/output ports and interconnection types
- G02B6/3544—2D constellations, i.e. with switching elements and switched beams located in a plane
- G02B6/3546—NxM switch, i.e. a regular array of switches elements of matrix type constellation
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/35—Optical coupling means having switching means
- G02B6/354—Switching arrangements, i.e. number of input/output ports and interconnection types
- G02B6/3544—2D constellations, i.e. with switching elements and switched beams located in a plane
- G02B6/3548—1xN switch, i.e. one input and a selectable single output of N possible outputs
-
- 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
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Optical Communication System (AREA)
Abstract
The invention discloses a bypass protection device and a method for an optical fiber circuit, wherein the device comprises two 1x2 non-locking optical switches, two 2x2 locking optical switches and a controller; the first 1x2 non-locking optical switch, the first 2x2 locking optical switch, the second 2x2 locking optical switch and the second 1x2 non-locking optical switch are sequentially connected through an optical path, and the controller is used for controlling the connection modes of the four optical switches when the power is on; a pair of input/output ports between the first 2x2 locking optical switch and the second 2x2 locking optical switch are used as two connecting ends of the device and are used for connecting protected equipment; the optical path is connected to the only input end of the first 1x2 non-locking optical switch and is connected out of the only output end of the second 1x2 non-locking optical switch, and signal transmission is achieved. The invention can conveniently preset the protection device to work in an 'access state' or a 'bypass state' when the power is off according to the requirement without additional hardware to finish the operation.
Description
Technical Field
The invention relates to a protection and repair device for a network optical fiber line, in particular to a bypass protection device and a bypass protection method for the optical fiber line.
Background
In a fiber line bypass protection device accessing a network, there are generally two states, one is a bypass state and one is an access state. Most optical fiber circuit bypass protection equipment on the market at present is based on photoswitch control, and photoswitch has two kinds: one state that remains before power down is called a latching optical switch; the other type of light path state after power failure is unique, namely the condition that the physical characteristic is set to be power failure can not be changed, and the light path state is called as an unlocked optical switch.
With the richness of client application scenarios, higher requirements are put on the bypass protection device, and particularly, the bypass protection device can work in a desired state under the condition of power failure according to needs.
Disclosure of Invention
The purpose of the invention is as follows: in view of the above problems, the present invention provides an optical fiber line bypass protection device and method, which can easily and conveniently preset the access or bypass state of the protection device during power failure without additional hardware to complete the operation.
The technical scheme is as follows: the technical scheme adopted by the invention is that the optical fiber line bypass protection device comprises two 1x2 non-locking optical switches, two 2x2 locking optical switches and a controller; the first 1x2 unlocked optical switch (1), the first 2x2 locked optical switch (2), the second 2x2 locked optical switch (3) and the second 1x2 unlocked optical switch (4) are sequentially connected through an optical path, and the controller is used for controlling the connection modes of the four optical switches when being powered on; a pair of input/output ports between the first 2x2 locking optical switch (2) and the second 2x2 locking optical switch (3) are used as two connecting ends of the device and are used for being connected with protected equipment; the optical path is connected to the only input end of the first 1x2 non-locking optical switch (1) and is connected out of the only output end of the second 1x2 non-locking optical switch (4) to realize signal transmission.
The two 1x2 non-locking optical switches work in a bypass mode when being powered off, and the access state of the protection device when being powered off is preset by controlling the working mode of the two 2x2 locking optical switches when the controller is powered on.
Preferably, the 1x2 non-locking optical switch is FSW-1x2-D-5N-SM-09-10-LP, and the 2x2 locking optical switch is FSW-2x 2T-D-5L-SM-09-10-LP. The controller adopts an embedded CPU.
The invention also provides an optical fiber circuit bypass protection method applying the protection device, which comprises the following steps:
(1) if the protection device is in an 'access state' when power is required to be cut off, when the protection device is powered on, the two 1x2 non-locking optical switches are set to work in a 'bypass mode' when power is cut off, and the two 2x2 locking optical switches are set to work in a 'cross mode';
(2) if the protection device is required to work as a bypass state when power is off, when the protection device is powered on, two 1x2 non-locking optical switches are set to work in a bypass mode when power is off, and two 2x2 locking optical switches are set to work in a parallel mode.
Has the advantages that: compared with the prior art, the invention realizes the preset state of the light path under the power-off condition by combining a certain number of different types of optical switches, and solves the problem that the light path state is unique after the power-off of the light path protection device. Specifically, two non-locking optical switches of 1x2 specification and two locking optical switches of 2x2 specification are combined, so that the protection device can be conveniently preset to work in an 'access state' or a 'bypass state' when the power is off according to needs without additional hardware to complete the operation.
Drawings
FIG. 1 is a block diagram of a fiber circuit bypass protection device according to the present invention;
FIG. 2 is a schematic diagram of a data path for an access state of a device operating in the access state when powered down;
FIG. 3 is a data path diagram of a bypass state of a device operating in an access state when powered down;
FIG. 4 is a data path diagram of the access state of the device operating in the bypass state when powered down;
FIG. 5 is a data path diagram illustrating a bypass state of the device when operating in the bypass state when powered down.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings and the implementation case.
The invention relates to an optical fiber line bypass protection device, which mainly aims to provide a device which can be in an 'access state' or a 'bypass state' in a preset state under the condition of realizing power failure through different types of optical switch combinations. The problem of among the prior art optic fibre circuit bypass protection card under the circumstances of outage, operating condition can not change, if want to change can only adopt new hardware is solved.
As shown in FIG. 1, the device adopts a combination of two general-purpose 1x 2-standard non-locking optical switches and two general-purpose 2x 2-standard locking optical switches, and a controller controls the connection states of the four optical switches to realize the switching between two modes of a 1x2 non-locking optical switch "Bypass" and "Pass" and the switching between two modes of a 2x2 locking optical switch "parallel mode" and "cross mode". The first 1x2 non-locking optical switch 1, the first 2x2 locking optical switch 2, the second 2x2 locking optical switch 3 and the second 1x2 non-locking optical switch 4 are sequentially and physically connected through optical paths, the protected device is connected in series in one optical path between the first 2x2 locking optical switch 2 and the second 2x2 locking optical switch 3, namely, one output port of the first 2x2 locking optical switch 2 and the corresponding input port of the second 2x2 locking optical switch 3 are used as the connection ports of the device and the protected device. The optical fiber line is connected to the input end of the first 1x2 non-locking optical switch 1 and is connected out of the output end of the second 1x2 non-locking optical switch 4, so that signal transmission is realized. The types of the 1x2 non-locking optical switch and the 2x2 locking optical switch adopted in the present embodiment are respectively: 1x2 non-locking optical switch (FSW-1x2-D-5N-SM-09-10-LP), 2x2 locking optical switch (FSW-2x 2T-D-5L-SM-09-10-LP). The controller can be implemented by an embedded CPU (such as ARM).
In order to realize that the protection device is in an 'access state' or a 'Bypass state' under the preset power-off condition, the two 1x2 non-locking optical switches work in a 'Bypass mode' (namely 'Bypass' mode) when power-off is required, and can be switched to a 'Pass' state or a 'Bypass' state according to requirements when power-on is carried out. The 2x2 specification locking type optical switch can be switched to a 'parallel mode' or a 'cross mode' according to requirements when being powered on. If the protection device is operated as an "access state" when power is off, the first 2x 2-locked optical switch 2 and the second 2x 2-locked optical switch 3 are both switched to a "cross mode" when power is on, and if the protection device is operated as a "bypass state" when power is off, the first 2x 2-locked optical switch 2 and the second 2x 2-locked optical switch 3 are both switched to a "parallel mode" when power is on.
Specifically, when power needs to be cut off, the optical switch is operated as an "on state", the optical switch states corresponding to the respective device states are defined as shown in table 1, and the first 2x 2-locked optical switch 2 and the second 2x 2-locked optical switch 3 are switched to the "cross mode". By adopting the arrangement, the access or Bypass connection state of the protection device can be changed by controlling the 'Pass' state or the 'Bypass' mode of the non-locking optical switch when the protection device is powered on; at power down, the two 2x2 locking optical switches remain in "cross mode" at power down, since the locking optical switches remain in a state prior to power down; and because the non-locking optical switch works in a bypass mode when the power is off, the protection device is in an access state when the power is off. Fig. 2 and fig. 3 show schematic diagrams of data paths of the protection devices "access state" or "bypass state" corresponding to table 1, respectively.
TABLE 1
| Powered-off access state | Powered on access state | Powered-on bypass state | |
| 1x2 non-locking switch 1 | Bypass | Bypass | Pass |
| 2x2 locking switch 2 | Cross mode | Cross mode | Cross mode |
| 2x2 locking switch 3 | Cross mode | Cross mode | Cross mode |
| 1x2 non-locking switch 4 | Bypass | Bypass | Pass |
When power-off is required, the optical switch works in a bypass state, the states of the optical switches corresponding to the states of the devices are defined as shown in table 2, and the first 2x 2-locking optical switch 2 and the second 2x 2-locking optical switch 3 are switched to a parallel mode. By adopting the arrangement, the access or Bypass connection state of the protection device can be changed by controlling the 'Pass' state or 'Bypass' state of the non-locking optical switch when the protection device is powered on; at power down, the two 2x2 locking optical switches remain in parallel mode at power down, since the locking optical switches remain in a state prior to power down; and because the non-locking optical switch works in a bypass mode when being powered off, the protection device is in a bypass state when being powered off. Fig. 4 and 5 show schematic diagrams of data paths of the protection devices "access state" or "bypass state" corresponding to table 2, respectively.
TABLE 2
| Bypass state of power outage | Powered-on bypass state | Powered on access state | |
| 1x2 non-locking switch 1 | Bypass | Bypass | Pass |
| 2x2 locking switch 2 | Parallel mode | Parallel mode | Parallel mode |
| 2x2 locking switch 3 | Parallel mode | Parallel mode | Parallel mode |
| 1x2 non-locking switch 4 | Bypass | Bypass | Pass |
Claims (5)
1. An optical fiber line bypass protection device, characterized by: the protection device comprises two 1x2 non-locking optical switches, two 2x2 locking optical switches and a controller; the first 1x2 unlocked optical switch (1), the first 2x2 locked optical switch (2), the second 2x2 locked optical switch (3) and the second 1x2 unlocked optical switch (4) are sequentially connected through an optical path, and the controller is used for controlling the connection modes of the four optical switches when being powered on; a corresponding group of input/output ports between the first 2x2 locking optical switch (2) and the second 2x2 locking optical switch (3) are used as two connecting ends of the device and are used for being connected with protected equipment; the optical path is connected to the only input end of the first 1x2 non-locking optical switch (1) and is connected out of the only output end of the second 1x2 non-locking optical switch (4) to realize signal transmission.
2. The fiber circuit bypass protection device according to claim 1, wherein: when the two 1x2 non-locking optical switches work in a bypass mode when power is off, the access state of the protection device when power is off is preset by controlling the working mode of the two 2x2 locking optical switches when the controller is powered on.
3. The fiber circuit bypass protection device according to claim 1, wherein: the 1x2 non-locking optical switch is FSW-1x2-D-5N-SM-09-10-LP, and the 2x2 locking optical switch is FSW-2x 2T-D-5L-SM-09-10-LP.
4. The fiber circuit bypass protection device according to claim 1, wherein: the controller adopts an embedded CPU.
5. The method for protecting a bypass of an optical fiber line applied to a protection device according to claim 1, comprising:
(1) if the protection device is in an 'access state' when power is required to be cut off, when the protection device is powered on, the two 1x2 non-locking optical switches are set to work in a 'bypass mode' when power is cut off, and the two 2x2 locking optical switches are set to work in a 'cross mode';
(2) if the protection device is required to work as a bypass state when power is off, when the protection device is powered on, two 1x2 non-locking optical switches are set to work in a bypass mode when power is off, and two 2x2 locking optical switches are set to work in a parallel mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010039645.1A CN111262622A (en) | 2020-01-14 | 2020-01-14 | Optical fiber line bypass protection device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010039645.1A CN111262622A (en) | 2020-01-14 | 2020-01-14 | Optical fiber line bypass protection device and method |
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| Publication Number | Publication Date |
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| CN111262622A true CN111262622A (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010039645.1A Pending CN111262622A (en) | 2020-01-14 | 2020-01-14 | Optical fiber line bypass protection device and method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053720A (en) * | 1990-01-23 | 1991-08-07 | 清华大学 | A kind of looped-network inserter for optical-fibre interface |
| CN1360416A (en) * | 2000-12-10 | 2002-07-24 | 莱特司给网络股份有限公司 | Module and method for rearrangement of optical network |
| CN1372398A (en) * | 2001-02-27 | 2002-10-02 | 北京邮电大学 | Node protector for changover ring of wave division multiplexing circuit |
| CN201654328U (en) * | 2009-12-04 | 2010-11-24 | 刘晓华 | Minitype self-locking single-axis optical switch |
| CN104811239A (en) * | 2015-03-25 | 2015-07-29 | 常湧 | Timing and locking system and method based on automatic fiber switching protection |
| US9860616B1 (en) * | 2016-09-06 | 2018-01-02 | Gigamon Inc. | Reduction of network connectivity gaps experienced by inline network appliances |
| CN108028812A (en) * | 2015-09-15 | 2018-05-11 | 阿尔卡特朗讯 | Method, circuit switching component, line card and its network node for functional arrangement switching part |
-
2020
- 2020-01-14 CN CN202010039645.1A patent/CN111262622A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053720A (en) * | 1990-01-23 | 1991-08-07 | 清华大学 | A kind of looped-network inserter for optical-fibre interface |
| CN1360416A (en) * | 2000-12-10 | 2002-07-24 | 莱特司给网络股份有限公司 | Module and method for rearrangement of optical network |
| CN1372398A (en) * | 2001-02-27 | 2002-10-02 | 北京邮电大学 | Node protector for changover ring of wave division multiplexing circuit |
| CN201654328U (en) * | 2009-12-04 | 2010-11-24 | 刘晓华 | Minitype self-locking single-axis optical switch |
| CN104811239A (en) * | 2015-03-25 | 2015-07-29 | 常湧 | Timing and locking system and method based on automatic fiber switching protection |
| CN108028812A (en) * | 2015-09-15 | 2018-05-11 | 阿尔卡特朗讯 | Method, circuit switching component, line card and its network node for functional arrangement switching part |
| US9860616B1 (en) * | 2016-09-06 | 2018-01-02 | Gigamon Inc. | Reduction of network connectivity gaps experienced by inline network appliances |
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Application publication date: 20200609 |
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