TW201300859A - Selective wavelength management routing device with white spectral channel input - Google Patents

Abstract

This patent invents a reconfigurable add-drop multiplexer (ROADM) by using fiber Bragg grating (FBG) and optical circulator (OC). It allows the white spectral channels inputted. For the current dynamic optical network, the network accommodates many large wavelengths to carry information; however, the local node could just handle a few wavelength channels. The patent proposes a kind of ROADM to allow choosing the wavelength channels we want to handle. By installing the corresponding FBGs in the proposed ROADM, the network manager can add-drop the wavelength channels that we want manage without interfering other wavelength channels. The other wavelength channels we don't handle would directly pass through the output port. Compare with the other ROADM presented before, the proposed RAODM not only effectively reduces the insertion loss but allows white spectral channels input.

Description

Optional management wavelength white light full-frequency wavelength configuration routing device

The invention relates to a white light full-frequency wavelength configuration routing device with optional management wavelength, which is a routing device capable of completing an optional optical wavelength by simply using a Bragg fiber grating, and adjusting the Bragg center wavelength with tension or temperature. According to the appropriate grating arrangement, mutual interference between wavelength signals is avoided.

The structure of the conventional reconfigurable optical signal plug-in multiplexer (as proposed by Okayama et al., as shown in the third figure), although the architecture is very similar to the patent of the present invention, but the function is very different, Okayama et al.'s architecture allows only four-wavelength signals for the entire optical network. When the network has more than four-wavelength signals, the architecture will operate abnormally, so when the network wavelength signal increases. This architecture also needs to increase the corresponding Bragg fiber grating to work properly. However, when the number of wavelengths required by the network is large, the architecture needs to add additional Bragg fiber gratings when it can operate normally. This architecture wastes Bragg fiber gratings when only a small number of wavelength signals are managed.

The biggest disadvantages of the above-mentioned conventional reconfigurable optical signal plug-in multiplexer architecture are:

1. When the network has more than four wavelength signals, abnormal operation will occur.

2. The corresponding Bragg fiber grating must be added for normal operation.

3. Adding a fiber grating to manage a small number of wavelength signals, the cost is too high.

The aforementioned architecture for the reconfigurable optical signal plug-in multiplexer mentioned in the above, although it can achieve the general basic requirements and effects in the process of network signal processing, the system integrity in practical applications With the shortcomings and shortcomings of industrial applications such as network interface integration and cost control, it is impossible to exert more specific industrial applicability.

In summary, due to the use of the reconfigurable optical signal plug-in multiplexer architecture, there are some shortcomings and shortcomings. Based on the future trend of industrial progress, it is necessary to propose specific improvement plans to meet the industry. The need for progress further provides more technical options in the industry.

The invention solves the shortcomings of the integration of the conventional network system, the integration capability of the network interface construction and the industrial application specificity such as the cost control, and thus the invention patent proposes the white light full-frequency of the optional wavelength. The reconfigurable optical signal plug-in multiplexer can place the corresponding Bragg fiber grating for the wavelength signal to be managed, and other unmanaged wavelength signals can directly reach the Output, which can save a large amount of Bragg fiber. Gratings can be used directly in today's optical network environments without changing the network architecture.
Therefore, regardless of the subjective and objective conditions, the white light full-frequency wavelength configuration routing device with optional wavelength management can be used in domestic and foreign patents. Currently, there is no relevant technology applied to the construction of high-performance network signal processing racks. The advantage of replacing the technology is very suitable for the equipment market of white light full-frequency wavelength configuration routing device industry with optional management wavelength, which is bound to bring the production of white light full-frequency wavelength configuration routing device and its equipment with optional management wavelength. Great business opportunities in the market related to the design and manufacturing industry.
The invention realizes a high-performance network signal processing architecture by configuring a white light full-frequency wavelength configuration routing device with an optional wavelength management.
In order to achieve the above object and function, an optional wavelength-managed white light full-frequency wavelength configuration routing device includes a light return module, a first fiber grating module and a second fiber grating module, wherein:
a first light returning device and a second light returning device, the first light returning device and the second light returning device respectively comprise a first side, a second side, a first In the third layer and the fourth layer, the first layer and the fourth layer of the first photoreactor are respectively an Input埠 and an Output埠, and the first and fourth axes of the second photoreactor are respectively an Add埠And the Drop 埠, in addition, the first reticle and the second 埠 and the third 之 of the second reticle are connected.
a first fiber grating module having a plurality of fixed fiber gratings and a plurality of adjustable fiber gratings, wherein the first fiber grating module is coupled to the second and second photoreactors of the first photoreactor The second day.
a second fiber grating module having a plurality of fixed fiber gratings and a plurality of adjustable fiber gratings, wherein the second fiber grating module is coupled to the third port of the first photoreactor and the second photoreactor The third day.
The first input signal of the first photoreactor is a white light full-frequency wavelength signal.
The above complex fixed fiber grating and complex adjustable fiber grating are both Bragg fiber gratings.
The center wavelength of the plurality of fixed fiber gratings of the first fiber grating module is placed at intervals of adjacent at least one wavelength signal.
The plurality of adjustable fiber gratings of the first fiber grating module are consistent with the center wavelength of the plurality of fixed fiber gratings, and the adjustment wavelength of the center wavelength of the plurality of adjustable fiber gratings is to adjust the bandwidth of the adjacent one wavelength.
The center wavelength of the above plurality of adjustable fiber gratings is adjusted in any manner of thermal modulation or tension.
The center wavelength of the plurality of fixed fiber gratings of the second fiber grating module relative to the plurality of fixed fiber gratings of the first fiber grating module is a bandwidth of a adjacent wavelength.
The plurality of adjustable fiber gratings of the second fiber grating module correspond to the plurality of fixed fiber gratings of the first fiber grating module, and the center wavelengths of the two adjustable fiber gratings are consistent.
The plurality of adjustable fiber gratings of the first fiber grating module are correspondingly adjusted to an even wavelength, and the fixed fiber grating of the second fiber module is required to reflect the even wavelength signal of the white light full frequency to the first photoreactor. The fourth is the output.
The plurality of adjustable fiber gratings of the first fiber grating module are correspondingly adjusted to an odd-numbered wavelength, so that the even-numbered wavelength signals of the white light full-frequency are respectively taken out from the first and fourth ports of the second photoreactor as Add-Drop.
The plurality of adjustable fiber gratings of the second fiber grating module are correspondingly adjusted to an odd wavelength, so that the odd-numbered wavelength signals of the white light full-frequency are reflected to the fourth output of the first photo-return.
The plurality of adjustable fiber gratings of the second fiber grating module are correspondingly adjusted to an even number of wavelengths, so that the odd-numbered wavelength signals of the white light full-frequency are respectively taken out from the first and fourth ports of the second photoreactor as Add-Drop.
The specific features and functions of the white light full-frequency wavelength configuration routing device with optional wavelength management of the present invention are as follows:
1. Complete the optional optical wavelength routing device with a Bragg fiber grating.
2. Fit the tension or temperature to adjust the wavelength of the Bragg center.
3. In a proper grating arrangement, avoid interference of wavelength signals.
4. The combination of two fiber gratings and two 4-turn photoreactors has a simple structure.
5. The cost is cheaper than the general wavelength configuration routing device, and the economy is high.
6. Adjust the number of gratings according to network requirements, and efficiently manage the optical network.
7. Can provide network administrators, more flexible wavelength routing devices.
8. Provide low-cost wavelength routing equipment for domestic optical fiber communication networks.
9. Place the fiber grating only for the wavelength signal to be managed.
10. Wave signals that do not need to be managed can be directly output, saving costs.
11. It is not necessary to change the network architecture for the optical network environment and can be used directly.
12. The wavelength signal can be added-extracted without affecting other signals.
13. The unselected wavelength signal will not be affected by the direct output.
14. Effectively reduce the insertion loss, and also allow full-wavelength white light input.

Please refer to the first figure, which is a schematic diagram of a configuration routing device architecture according to an embodiment of the present invention. The present invention is an optional wavelength-managed white light full-frequency wavelength configuration routing device, including a light return module (1), a a first fiber grating module (2) and a second fiber grating module (3), wherein:

The photoreceiver module (1) has a first photoreactor (11) and a second photoreactor (12), the first fiber grating module (2) and the second fiber grating module (3) is connected between the first photoreactor (11) and the second photoreactor (12).

Please refer to the second figure, which is a schematic diagram of the connection of the wavelength configuration routing device according to an embodiment of the present invention, wherein the photoreceiver module (1), the first fiber grating module (2) and the second fiber grating module (3) The link relationship is as follows:

A light return module (1) has a first light return (11) and a second light return (12), the first light return (11) and the second light return (12) Each includes a first layer (111, 121), a second layer (112, 122), a third layer (113, 123), and a fourth layer (114, 124), the first photoreactor ( 11) The first (111) and the fourth (114) are respectively Input and Output, and the first (121) and the fourth (124) of the second light return (12) are respectively Adding 埠-Drop to remove 埠, and the first reticle (11) and the second 112 (112, 122) and the third 埠 (113, 123) of the second reticle (12) are both Connected to the 埠, and the signal input by the first 埠 (111) of the first illuminator (11) is a white light full-frequency wavelength signal.

a first fiber grating module (2) having a plurality of fixed fiber gratings (21) and a plurality of adjustable fiber gratings (22), wherein the first fiber grating module (2) is coupled to the first light receptor (11) between the second 埠 (112) and the second 埠 (122) of the second illuminator (12), the plurality of fixed fiber gratings (21) and the plurality of tunable fiber gratings (22) are both Grid fiber grating.

The center wavelength of the plurality of fixed fiber gratings (21) of the first fiber grating module (2) is placed at intervals of adjacent at least one wavelength signal; the plurality of adjustable fiber gratings of the first fiber grating module (2) (22) The center wavelength of the plurality of fixed fiber gratings (21) is consistent, and the adjustment wavelength of the center wavelength of the plurality of adjustable fiber gratings (22) is to increase the bandwidth of the adjacent one wavelength; the complex number is adjustable The center wavelength of the fiber grating (22) is adjusted in either thermal modulation or tension.

a second fiber grating module (3) having a plurality of fixed fiber gratings (31) and a plurality of adjustable fiber gratings (32), wherein the second fiber grating module (3) is coupled to the first photoreactor Between the third 埠 (113) of the (11) and the third 埠 (123) of the second illuminator (12), the plurality of fixed fiber gratings (31) and the plurality of tunable fiber gratings (32) are both Grid fiber grating.

The center wavelength of the plurality of fixed fiber gratings (31) of the second fiber grating module (3) relative to the plurality of fixed fiber gratings (21) of the first fiber grating module (2) is a large adjacent wavelength a bandwidth; a plurality of tunable fiber gratings (32) of the second fiber grating module (3) corresponding to the plurality of fixed fiber gratings (21) of the first fiber grating module (2), and the two adjustable fiber gratings The center wavelengths of (21, 32) are the same.

The plurality of adjustable fiber gratings (22) of the first fiber grating module (2) are correspondingly adjusted to an even wavelength, and the fixed fiber grating (31) of the second fiber module (3) is required to make the white light full frequency The even wavelength signal is reflected to the fourth turn (114) of the first photoreactor (11) for output.

The plurality of adjustable fiber gratings (22) of the first fiber grating module (2) are correspondingly adjusted to an odd-numbered wavelength, so that the even-numbered wavelength signals of the white light full-frequency are respectively from the first port of the second photoreactor (12). And the fourth line (124) for Add to add - Drop to take out.

The plurality of adjustable fiber gratings (32) of the second fiber grating module (3) are correspondingly adjusted to odd wavelengths, so that the odd-numbered wavelength signals of the white light full-frequency are reflected to the fourth edge of the first photoreactor (11) (114). ) for output.

The plurality of adjustable fiber gratings (32) of the second fiber grating module (3) are correspondingly adjusted to an even number of wavelengths, so that the odd-numbered wavelength signals of the white light full-frequency are respectively from the first frame of the second photoreactor (12). And the fourth line (124) for Add to add - Drop to take out.

The specific feasible implementation methods and theoretical contents are detailed as follows:

An optional white wavelength full-wavelength wavelength configuration routing device for managing wavelengths, comprising two four-turn photoreactors (including a first photoreactor (11) and a second photoreactor (12)) and two sets of multiple Fixed and adjustable Bragg fiber gratings (the first fiber grating module (2) comprising a plurality of fixed fiber gratings (21) and a plurality of adjustable fiber gratings (22) and a plurality of fixed fiber gratings (31) And the second fiber grating module (3) of the plurality of adjustable fiber gratings (32) are combined, in the two 埠2 of the four-turner (ie, the second 112 (112, 122)) and 埠 3 [The third 埠 (113, 123)] will be placed with multiple fixed and adjustable Bragg fiber gratings, and the center wavelength of the upper branch (ie, the first fiber grating module (2)) fixed multiple Bragg fiber grating Placed adjacent to at least one wavelength signal interval, we represent in odd numbers, and the center wavelengths of the adjustable fiber gratings (22, 32) of the first fiber grating module (2) and the second fiber grating module (3) correspond to Fixed fiber optic light for the first fiber grating module (2) (21) The center wavelength is the same. When the center wavelength of the adjustable fiber grating (22, 32) is adjusted by thermal modulation or tension, it can only adjust the bandwidth of an adjacent wavelength, and the second fiber grating module ( 3) The center wavelength of the fixed fiber grating (31) is adjacent to the wavelength of the first wavelength of the first fiber grating module (2) fixed fiber grating (21), which is represented by an even number. Here, the wavelength signal corresponding to the center wavelength of the fixed fiber grating (21, 31) can be taken out by Add-Drop, and other wavelength signals directly penetrate all the fiber gratings (21, 31, 22, 32). To Output埠.

When the white light full-frequency wavelength signal is input from the first 埠 (111) [Input 埠] of the first illuminator (11), the wavelength signal corresponding to the center wavelength of the fixed fiber grating (21, 31) can be added by adding - The drop is taken out, and the other wavelength signals directly penetrate the first fiber grating module (2) and the second fiber grating module (3) to reach the fourth port (114) of the first photoreactor (11) [Output埠] ], and if the wavelength signal consistent with the fixed fiber grating (21, 31) directly reaches the fourth 114 (114) [Output 埠] of the first illuminator (11), the first fiber grating module ( 2) The complex tunable fiber grating (22) is adjusted to an even wavelength, and the complex tunable fiber grating (32) of the second fiber grating module (3) is adjusted to an odd wavelength, which allows Add to add -Drop to extract the wavelength signal The first fiber grating module (2) and the second fiber grating module (3) are reflected to the fourth 114 (114) of the first illuminator (11), and if Add is added - The drop removal mechanism allows the first fiber grating module (2) and the second fiber The plurality of adjustable fiber gratings (22, 32) corresponding to the grid module (3) are separated from the wavelength signal, in other words, the adjustable fiber grating (22) of the first fiber grating module (2) is adjusted to an odd wavelength. The adjustable fiber grating (32) of the second fiber grating module (3) is adjusted to an even wavelength, so that the wavelength signal can penetrate to reach the fourth turn (124) of the second photoreactor (12) [Drop埠].

On the other hand, when the Drop takes out the wavelength signal, the corresponding wavelength can be added by Add, so that the wavelength signal added by Add can reach the output.

In summary, the present invention is directed to an application technology for a white light full-frequency wavelength configuration routing device that can optionally manage wavelengths, in particular, a method comprising a photoreactor module (1) and a first fiber grating module (2) And the white fiber full-frequency wavelength configuration routing device of the second fiber grating module (3), wherein the first fiber grating module (2) and the second fiber grating module (3) are connected to the first photoreactor ( 11) adjusting a plurality of adjustable fiber gratings of the plurality of adjustable fiber gratings (22) of the first fiber grating module (2) and the second fiber grating module (3) between the second optical device (12) 32) Form an appropriate grating arrangement to avoid mutual interference between wavelength signals.

In view of the foregoing description of the embodiments, the operation and the use of the present invention and the effects of the present invention are fully understood, but the above described embodiments are merely preferred embodiments of the present invention, and the invention may not be limited thereto. Included within the scope of the present invention are the scope of the present invention.

(1). . . Return module

(11). . . First light return

(111). . . First

(112). . . Second

(113). . . Third

(114). . . Fourth

(12). . . Second light return

(121). . . First

(122). . . Second

(123). . . Third

(124). . . Fourth

(2). . . First fiber grating module

(twenty one). . . Fixed fiber grating

(twenty two). . . Adjustable fiber grating

(3). . . Second fiber grating module

(31). . . Fixed fiber grating

(32). . . Adjustable fiber grating

First Figure: Schematic diagram of a configuration routing device according to an embodiment of the present invention.

Second: A schematic diagram of a connection of a configuration routing device according to an embodiment of the present invention.

The third figure: a schematic diagram of the connection of a conventional four-wavelength reconfigurable optical signal plug-in multiplexer device.

(1). . . Return module

(11). . . First light return

(12). . . Second light return

(2). . . First fiber grating module

(3). . . Second fiber grating module

Claims (12)

An optional white wavelength full-wavelength wavelength configuration routing device g4 for managing wavelengths, comprising:
a first light returning device and a second light returning device, the first light returning device and the second light returning device respectively comprise a first side, a second side, a first In the third layer and the fourth layer, the first layer and the fourth layer of the first photoreactor are respectively an Input node and an Output node, and the first node and the fourth node of the second photoreactor are respectively added as an Add button. And removing the 埠, and the first reticle is connected to the second 埠 and the third 该 of the second reticle;
a first fiber grating module having a plurality of fixed fiber gratings and a plurality of adjustable fiber gratings, wherein the first fiber grating module is coupled to the second and second photoreactors of the first photoreactor Second day;
a second fiber grating module having a plurality of fixed fiber gratings and a plurality of adjustable fiber gratings, wherein the second fiber grating module is coupled to the third port of the first photoreactor and the second photoreactor The third day. The white light full-frequency wavelength configuration routing device of the optional management wavelength according to the first aspect of the patent application, wherein the first input signal of the first photoreactor is a white light full-frequency wavelength signal. The white light full-frequency wavelength configuration routing device of the optional management wavelength, as described in claim 1, wherein the plurality of fixed fiber gratings and the plurality of adjustable fiber gratings are both Bragg fiber gratings. The white light full-frequency wavelength configuration routing device of the optional management wavelength as described in claim 1, wherein the central wavelength of the plurality of fixed fiber gratings of the first fiber grating module is separated by at least one wavelength signal adjacent to each other Place. The white light full-frequency wavelength configuration routing device of the optional management wavelength according to any one of claims 1 to 4, wherein the plurality of adjustable fiber gratings of the first fiber grating module correspond to a plurality of fixed fiber gratings The center wavelength is consistent, and the adjustment range of the center wavelength of the complex tunable fiber grating is to increase the bandwidth of the adjacent one wavelength. The white light full-frequency wavelength configuration routing device of the optional management wavelength as described in claim 5, wherein the center wavelength of the plurality of adjustable fiber gratings is adjusted by any one of thermal modulation or tension. The white light full-frequency wavelength configuration routing device of the optional management wavelength as described in claim 1, wherein the plurality of fixed fiber gratings of the second fiber grating module are fixed relative to the first fiber grating module The center wavelength of the fiber grating is the bandwidth of the adjacent wavelength of the first largest. The white light full-frequency wavelength configuration routing device of the optional management wavelength according to any one of claims 1 to 7, wherein the plurality of adjustable fiber gratings of the second fiber grating module correspond to the first fiber grating mode The plurality of fixed fiber gratings are arranged, and the center wavelengths of the two adjustable fiber gratings are the same. The white light full-frequency wavelength configuration routing device of the optional management wavelength as described in claim 1, wherein the plurality of adjustable fiber gratings of the first fiber grating module are correspondingly adjusted to an even wavelength, and need to pass through the second optical fiber. The fixed fiber grating of the module is configured to reflect the white light full-frequency wavelength signal to the fourth output of the first photoreactor. The white light full-frequency wavelength configuration routing device of the optional management wavelength as described in claim 1, wherein the plurality of adjustable fiber gratings of the first fiber grating module are correspondingly adjusted to odd wavelengths, so that the white light is full frequency The even-numbered wavelength signals are respectively taken out from the first and fourth ports of the second photoreactor as Add-Drop. The white light full-frequency wavelength configuration routing device of the optional management wavelength as described in claim 1, wherein the plurality of adjustable fiber gratings of the second fiber grating module are correspondingly adjusted to an odd wavelength to enable white light full-wavelength wavelength The signal is reflected to the fourth output of the first photoreactor. The white light full-frequency wavelength configuration routing device of the optional management wavelength as described in claim 1, wherein the plurality of adjustable fiber gratings of the second fiber grating module are correspondingly adjusted to an even wavelength, so that the white light is full frequency The odd-numbered wavelength signals are respectively taken from the first and fourth ports of the second photoreactor and added to -Drop.