CN101344618A - Optical comb type wave separator with multiple optical fiber collimating device - Google Patents
Optical comb type wave separator with multiple optical fiber collimating device Download PDFInfo
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- CN101344618A CN101344618A CNA2008101186356A CN200810118635A CN101344618A CN 101344618 A CN101344618 A CN 101344618A CN A2008101186356 A CNA2008101186356 A CN A2008101186356A CN 200810118635 A CN200810118635 A CN 200810118635A CN 101344618 A CN101344618 A CN 101344618A
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Abstract
The invention relates to an optical comb wave separator provided with a multiple optical-fiber collimator, comprising an optical comb wave separator core and the collimator which is formed by at least two jumper cables of optical-fiber and is arranged at two ends of the optical comb wave separator core. The collimator formed by at least two jumper cables of optical-fiber can be the collimator formed by three jumper cables, four jumper cables and six jumper cables, etc. a plurality of optical fibers. Connecting certain optical fibers of the collimator formed by a plurality of jumper cables also can form a cascading optical comb wave separator. The optical comb wave separator provided with the collimator formed by a plurality of optical fibers of the invention can integrate a plurality of optical comb wave separator sets on the core of one optical comb wave separator and can realize the cascading for the optical comb wave separator so as to enhance the isolation degree and the capability of the optical comb wave separator and to reduce cost in virtue of the application of the multiple optical-fiber collimator.
Description
Technical field
The present invention relates to optical communication field, particularly a kind of light Comb for dividing waves device that has multiple optical fiber collimating.
Background technology
Light Comb for dividing waves device (Interleaver) is a kind of interleaver that is used for optical-fibre communications field, can intensive channel spacing is thinning thin, and to realize more intensive wavelength-division multiplex.Be illustrated in fig. 1 shown below, utilize light Comb for dividing waves device can a row frequency interval for the signal of v be divided into two row frequency intervals for the signal of 2v respectively from the optical filter technology of two channel interlacings outputs, usually be two row frequency intervals that the signal of 2v calls very, two groups of signals of idol, and by two output terminals outputs of reflection end, transmission end of Interleaver.General Interleaver also can realize closing the function of ripple, and is opposite with above-mentioned partial wave.
The application of light Comb for dividing waves device mainly contains the wavelength division multiplexer that can realize that channel spacing is more intensive, makes the 0ADM of multi-wavelength, and the optical channel Noise monitor improves Erbium-Doped Fiber Amplifier (EDFA) output signal-to-noise ratio or makes comb-type light source as comb filter.
Along with the fast development of optical-fibre communications, the growth of signal transmission rate and the increase of the number of channel strengthen day by day to the requirement of high-isolation, wide bandwidth, novel Interleaver such as asymmetric.At present, the cost of high-performance Interleaver is higher, and the production difficulty is big, is difficult to satisfy on a large scale, the application of light communication system cheaply.
Summary of the invention
The objective of the invention is the big and high deficiency of cost of production difficulty at high-performance Interleaver device in the prior art, a kind of light Comb for dividing waves device that has multiple optical fiber collimating is provided, multiple optical fiber collimating is incorporated in the light Comb for dividing waves device, realize low-cost, high performance Interleaver device.
To achieve these goals, the invention provides a kind of light Comb for dividing waves device that has multiple optical fiber collimating, comprising: light Comb for dividing waves device core places described smooth Comb for dividing waves device core collimating apparatus two ends, that be made up of the jumper of two optical fiber at least.
One end of described smooth Comb for dividing waves device core connects the reflection-type collimating apparatus of being made up of four fine jumper, and four optical fiber that described four fine jumper connect are respectively first incident optical, second incident optical, first mirror based fiber optica and second mirror based fiber optica; The other end of described smooth Comb for dividing waves device core connects the transmission-type collimating apparatus of being made up of two fine jumper, and two optical fiber that described two fine jumper connect are respectively the first transmission optical fiber and the second transmission optical fiber.Constitute two cover light Comb for dividing waves devices.
One end of described smooth Comb for dividing waves device core connects the reflection-type collimating apparatus of being made up of six fine jumper, and the six roots of sensation optical fiber that described six fine jumper connect is respectively first incident optical, second incident optical, the 3rd incident optical, first mirror based fiber optica, second mirror based fiber optica and the 3rd mirror based fiber optica; The other end of described smooth Comb for dividing waves device core connects the transmission-type collimating apparatus of being made up of three fine jumper, and three optical fiber that described three fine jumper connect are respectively the first transmission optical fiber, the second transmission optical fiber and the 3rd transmission optical fiber.Constitute three cover light Comb for dividing waves devices.
Some optical fiber by the collimating apparatus that will be made up of how fine jumper connects, and can also constitute cascade light Comb for dividing waves device.
By above technical scheme as can be known, the light Comb for dividing waves device that has multiple optical fiber collimating of the present invention, application by multiple optical fiber collimating, and the cascade suitable in addition to Interleaver, can realize the technical indicator of high-performance Interleaver device cheaply, and the structure of this high-performance Interleaver device is also very simple.
Also in conjunction with the accompanying drawings the present invention is described in further detail below by specific embodiment.
Description of drawings
Fig. 1 is the light path synoptic diagram of prior art Interleaver;
Fig. 2 is the basic light channel structure synoptic diagram of the Interleaver of crystal type;
The traditional Interleaver structural representation of Fig. 3 for simplifying;
Fig. 4 has the structural representation of the light Comb for dividing waves device embodiment one of multiple optical fiber collimating for the present invention;
Fig. 5 has the structural representation of the light Comb for dividing waves device embodiment two of multiple optical fiber collimating for the present invention;
Fig. 6 has the structural representation of the light Comb for dividing waves device embodiment three of multiple optical fiber collimating for the present invention;
Fig. 7 has the structural representation of the light Comb for dividing waves device embodiment four of multiple optical fiber collimating for the present invention;
Fig. 8 has the structural representation of the light Comb for dividing waves device embodiment five of multiple optical fiber collimating for the present invention;
Fig. 9 has the structural representation of the light Comb for dividing waves device embodiment six of multiple optical fiber collimating for the present invention;
Figure 10 A is the structural representation of the present invention's four fine jumper 21;
Figure 10 B is the identical synoptic diagram of fiber core distance of the optical fiber in the jumper of the present invention;
Figure 10 C is the different synoptic diagram of fiber core distance of the optical fiber in the jumper of the present invention.
Description of reference numerals:
100-polarization spectro crystal 2 00-wave plate 300-birefringece crystal filter bank
400-polarization spectro crystal 5 00-polarization closes Shu Jingti 1-Interleaver core
The two Fiber Optic Patchcord Pigtail 21-four fine jumper 22-six fine jumper of 2-
2 '-single fiber jumper 21 '-two fine jumper 22 '-three fine jumper
3-reflection-type collimating apparatus 31-reflection-type collimating apparatus 32-reflection-type collimating apparatus
3 '-transmission-type collimating apparatus 31 '-transmission-type collimating apparatus 32 '-the transmission-type collimating apparatus
The 4-input end fiber 41-first incident optical 42-second incident optical
43-the 3rd incident optical 5-reflection end optical fiber 51-first mirror based fiber optica
The 52-second mirror based fiber optica 53-the 3rd mirror based fiber optica 6-transmission end optical fiber
The 61-first transmission optical fiber 62-second transmission optical fiber 63-the 3rd transmission optical fiber
The 7-optical circulator
Embodiment
At first briefly introduce the type and the simple principle of light Comb for dividing waves device (Interleaver).There is several method to make Interleaver now: the 1. Interleaver of crystal type; 2. the Interleaver of Fabry-Bai Luo (F-P) chamber type; The Interleaver of 3. full optical fiber mach-Ze De MZ type; 4. the Interleaver of polarization beam splitter (PBS)+wave plate type.The ultimate principle of these Interleaver all is consistent, all utilize the interference of light principle, select suitable combination of frequency output by the interference pattern that control interferes the periodic signal wavelength that is produced to repeat integral multiple output, the spectrum of being exported is the uniformly-spaced spectrum of similar pectination wave.Wherein, the basic light channel structure of the Interleaver of crystal type as shown in Figure 2, after light incides and becomes polarized light behind polarization spectro crystal 100 and the wave plate 200 and incide birefringece crystal filter bank 300, birefringece crystal filter bank 300 is made 2k π phase change for one group of wavelength wherein, this group wavelength does not change by crystal rear polarizer attitude, make (2k+1) π phase change for other one group of wavelength, the polarization state of this group wavelength will half-twist, by polarization spectro crystal 4 00 time, two groups of wavelength are because have different polarization states, spatially separate, close Shu Jingti5 00 by polarization at last and close light output.General for passband width and the high-isolation that reaches broad needs appropriate design birefringece crystal filter bank, and adopt the twin-stage filter structure.
The Interleaver that has multiple optical fiber collimating that introduces in following examples of the present invention is a core with above-mentioned various types of Interleaver, and application by multiple optical fiber collimating and cascade come implementation structure is simple, cost is low Interleaver's.
Use above-mentioned Interleaver simplification traditional Interleaver that utilizes single fiber collimating apparatus and double-fiber collimator as shown in Figure 3, comprise Interleaver core 1, two Fiber Optic Patchcord Pigtail (Fiber pigtail) 2, single fiber jumper (Fiber pigtail) 2 ', the transmission-type collimating apparatus 3 of reflection-type collimating apparatus 3 that two Fiber Optic Patchcord Pigtail (Fiberpigtail) 2 is formed and single fiber jumper (Fiber pigtail) 2 ' composition '.Wherein, when the Interleaver that has collimating apparatus used as demodulation multiplexer, optical signals input end fiber 4 entered this Interleaver device, again by reflection end optical fiber 5 and 6 outputs of transmission end optical fiber; Process is opposite therewith when using as multiplexer.All be that example describes in the embodiments of the invention with the demodulation multiplexer.
As shown in Figure 4, the structural representation that has the light Comb for dividing waves device embodiment one of multiple optical fiber collimating for the present invention.This light Comb for dividing waves device that has multiple optical fiber collimating comprises Interleaver core 1, places collimating apparatus Interleaver core 1 two ends, that be made up of the jumper of two optical fiber at least.
An end of Interleaver core 1 connects the reflection-type collimating apparatus of being made up of four fine jumper 21 31 in the present embodiment, and four optical fiber that this four fine jumper 21 connects are respectively first incident optical 41, second incident optical 42, first mirror based fiber optica 51 and second mirror based fiber optica 52; The other end of light Comb for dividing waves device core 1 connect by the transmission-type collimating apparatus 31 of two fine jumper 21 ' form ', two optical fiber of two fine jumper 21 ' connection are respectively the first transmission optical fiber 61 and the second transmission optical fiber 62.This light Comb for dividing waves device comprises two incident ends, two reflection ends and two transmission ends respectively, can on a light Comb for dividing waves device core 1, form two cover light Comb for dividing waves devices, can be with a cover as multiplexer, another set of as demodulation multiplexer, promptly the path of first incident optical 41, first mirror based fiber optica 51 and 61 formation of the first transmission optical fiber is covers; The path that second incident optical 42, second mirror based fiber optica 52 and the second transmission optical fiber 62 form is an other cover.
The light Comb for dividing waves device that has multiple optical fiber collimating that present embodiment provides is integrated in two cover Interleaver on the Interleaver core, be equivalent to the integrated of a sending and receiving end wavelength-division multiplex function, the volume of this light Comb for dividing waves device and cost only are equivalent to the level of an Interleaver device simultaneously, have reduced cost.
As shown in Figure 5, the structural representation that has the light Comb for dividing waves device embodiment two of multiple optical fiber collimating for the present invention.This light Comb for dividing waves device that has multiple optical fiber collimating comprises Interleaver core 1.The six roots of sensation optical fiber that reflection-type collimating apparatus 32, the six fine jumper of being made up of six fine jumper 22 in the end connection of light Comb for dividing waves device core 1 22 connect is respectively first incident optical 41, second incident optical 42, the 3rd incident optical 43, first mirror based fiber optica 51, second mirror based fiber optica 52 and the 3rd mirror based fiber optica 53; The other end of light Comb for dividing waves device core 1 connect by the transmission-type collimating apparatus 32 of three fine jumper 22 ' form ', three optical fiber of three fine jumper 22 ' connections are respectively the first transmission optical fiber 61, the second transmission optical fiber 62 and the 3rd transmission optical fiber 63.This light Comb for dividing waves device comprises three incident ends, three reflection ends and three transmission ends respectively, can form three cover light Comb for dividing waves devices on a light Comb for dividing waves device core 1, promptly the path of first incident optical 41, first mirror based fiber optica 51 and 61 formation of the first transmission optical fiber is covers; The path that second incident optical 42, second mirror based fiber optica 52 and the second transmission optical fiber 62 form is an other cover; The path that the 3rd incident optical 43, the 3rd mirror based fiber optica 53 and the 3rd transmission optical fiber 63 form is again a cover.
The light Comb for dividing waves device that has multiple optical fiber collimating that present embodiment provides is integrated in three cover Interleaver on the Interleaver core, be equivalent to the integrated of sending and receiving end wavelength-division multiplex function, the volume of this light Comb for dividing waves device and cost only are equivalent to the level of an Interleaver device simultaneously, have reduced cost.
It is to be noted; be not limited to integrated two covers or three cover Interleaver on an Interleaver core in embodiments of the present invention; as required; can also extend according to said structure; integrated quadruplet, five covers or more Interleaver are all within protection scope of the present invention.The two fine jumper of using in the embodiment of the invention in addition, three fine jumper, four fine jumper, six fine jumper and other possible how fine jumper are the number of fibers of use, promptly also operable at the transmission end of integrated three cover Interleaver is four fine or six fine jumper, only is to use wherein three.
As shown in Figure 6, the structural representation that has the light Comb for dividing waves device embodiment three of multiple optical fiber collimating for the present invention.On the basis of as shown in Figure 4 the light Comb for dividing waves device that has multiple optical fiber collimating, utilize two integrated cover Interleaver to carry out the single channel cascade.Concrete connectivity scenario is: first incident optical 41 is as the incident end, and first mirror based fiber optica 51 is connected with second incident optical 42, and second mirror based fiber optica 52 is as reflection end, and the first transmission optical fiber 61 constitutes reflection-type cascade light Comb for dividing waves device as the transmission end.Its light path trend is: from the incident end, promptly first incident optical 41 enters, and enters second incident optical 42 from first mirror based fiber optica 51, again from second mirror based fiber optica 52, i.e. and reflection end output; Another road enters from first incident optical 41, from 61 outputs of the first transmission optical fiber.As seen, light path has walked twice at reflection end, has increased the isolation of reflection end passage.
As shown in Figure 7, the structural representation that has the light Comb for dividing waves device embodiment four of multiple optical fiber collimating for the present invention.On the basis of as shown in Figure 4 the light Comb for dividing waves device that has multiple optical fiber collimating, utilize two integrated cover Interleaver to carry out the single channel cascade.Concrete connectivity scenario is: first incident optical 41 is as the incident end, and the first transmission optical fiber 61 is connected with second incident optical 42, and first mirror based fiber optica 51 is as reflection end, and the second transmission optical fiber 62 constitutes transmission-type cascade light Comb for dividing waves device as the transmission end.Its light path trend is: from the incident end, promptly first incident optical 41 enters, from 51 outputs of first reflection end; Another road enters from first incident optical 41, enters second incident optical 42 from the first transmission optical fiber 61, again from 62 outputs of the second transmission optical fiber.As seen, light path has walked twice at the transmission end, has increased the isolation of transmission end passage.
In above-mentioned Fig. 6 and the described embodiment of Fig. 7, also can utilize three integrated covers or the above Interleaver of three covers to carry out the single channel cascade.Integrated three cover Interleaver as shown in Figure 5 for example, reflection end is carried out cascade, can for first incident optical 41 as the incident end, first mirror based fiber optica 51 is connected with second incident optical 42, second mirror based fiber optica 52 is connected with the 3rd incident optical 43, the 3rd mirror based fiber optica 53 is as reflection end, and the first transmission optical fiber 61 is as the transmission end; The transmission end is carried out cascade, can for first incident optical 41 as the incident end, the first transmission optical fiber 61 is connected with second incident optical 42, the second transmission optical fiber 62 is connected with the 3rd incident optical 43, first mirror based fiber optica 51 is as reflection end, and the 3rd transmission optical fiber 63 is as the transmission end.
As shown in Figure 8, the structural representation that has the light Comb for dividing waves device embodiment five of multiple optical fiber collimating for the present invention.On the basis of as shown in Figure 5 the light Comb for dividing waves device that has multiple optical fiber collimating, utilize three integrated cover Interleaver to carry out the single channel cascade.Concrete connectivity scenario is: first incident optical 41 is as the incident end, first mirror based fiber optica 51 is connected 42 with second incident optical, second mirror based fiber optica 52 is as reflection end, the first transmission optical fiber 61 is connected 43 with the 3rd incident optical, the 3rd transmission optical fiber 63 constitutes anti-/ transmission connection light Comb for dividing waves device as the transmission end.Its light path trend is: from the incident end, promptly first incident optical 41 enters, and enters second incident optical 42 from first mirror based fiber optica 51, again from second mirror based fiber optica 52, i.e. and reflection end output; Another road enters from first incident optical 41, enters the 3rd incident optical 43 from the first transmission optical fiber 61, again from 63 outputs of the 3rd transmission optical fiber.As seen, light path has all walked twice at reflection end and transmission end, has increased the isolation of reflection end and transmission end passage.
As shown in Figure 9, the structural representation that has the light Comb for dividing waves device embodiment six of multiple optical fiber collimating for the present invention.On the basis of as shown in Figure 4 the light Comb for dividing waves device that has multiple optical fiber collimating, utilize two integrated cover Interleaver, add optical circulator 7 and carry out the single channel cascade.Concrete connectivity scenario is: first incident optical 41 is as the incident end, one end of optical circulator 7 is connected with second incident optical 42, the other end is connected with the first transmission optical fiber 61, and first mirror based fiber optica 51 is connected with second mirror based fiber optica 52, constitutes two cascade light Comb for dividing waves devices.Its light path trend is: from the incident end, promptly first incident optical 41 enters, and enters second mirror based fiber optica 52 from first mirror based fiber optica 51, enters an end 71 of optical loop device 7 again from second mirror based fiber optica 52, from an other end 72 of optical loop device, i.e. and reflection end output; Another road enters from first incident optical 41, enters the end 73 again of optical loop device from the first transmission optical fiber 61, and the end 71 from the optical loop device enters second incident optical 42 again, again from 62 outputs of the second transmission optical fiber.As seen, light path has all walked twice at reflection end and transmission end, has increased the isolation of reflection end and transmission end passage.
The fiber core of the optical fiber in the jumper in the collimating apparatus of being made up of the jumper of two optical fiber at least in the foregoing description is apart from identical or different.For example, Figure 10 A is depicted as four fine jumper 21, the fiber core of the optical fiber in the four fine jumper shown in Figure 10 B is apart from identical, and the light light path of passing by in optical fiber equates that also integrated many covers light Comb for dividing waves device is identical on an Interleaver core so so; The fiber core of the optical fiber in the four fine jumper shown in Figure 10 C is apart from difference, the light light path of passing by in optical fiber is not wait so, at this moment, the angle of the incident light of each incident end of integrated many covers light Comb for dividing waves device also can be different on an Interleaver core, promptly can different Interleaver be integrated according to different demands.By on Interleaver, using this collimating apparatus that constitutes by the how fine jumper of different fiber core distances, the Interleaver that can produce two covers or work alone in different centre wavelengths more than two covers.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (8)
1, a kind of light Comb for dividing waves device that has multiple optical fiber collimating is characterized in that, comprising: light Comb for dividing waves device core places described smooth Comb for dividing waves device core collimating apparatus two ends, that be made up of the jumper of two optical fiber at least.
2, the light Comb for dividing waves device that has multiple optical fiber collimating according to claim 1 is characterized in that,
One end of described smooth Comb for dividing waves device core connects the reflection-type collimating apparatus of being made up of four fine jumper, and four optical fiber that described four fine jumper connect are respectively first incident optical, second incident optical, first mirror based fiber optica and second mirror based fiber optica;
The other end of described smooth Comb for dividing waves device core connects the transmission-type collimating apparatus of being made up of two fine jumper, and two optical fiber that described two fine jumper connect are respectively the first transmission optical fiber and the second transmission optical fiber.
3, the light Comb for dividing waves device that has multiple optical fiber collimating according to claim 2, it is characterized in that, described first incident optical is as the incident end, described first mirror based fiber optica is connected with described second incident optical, described second mirror based fiber optica is as reflection end, the described first transmission optical fiber constitutes reflection-type cascade light Comb for dividing waves device as the transmission end.
4, the light Comb for dividing waves device that has multiple optical fiber collimating according to claim 2, it is characterized in that, described first incident optical is as the incident end, the described first transmission optical fiber is connected with described second incident optical, described first mirror based fiber optica is as reflection end, the described second transmission optical fiber constitutes transmission-type cascade light Comb for dividing waves device as the transmission end.
5, the light Comb for dividing waves device that has multiple optical fiber collimating according to claim 2, it is characterized in that, also comprise an optical circulator, one end of described optical circulator is connected with described second incident optical, the other end is connected with the described first transmission optical fiber, described first mirror based fiber optica is connected with described second mirror based fiber optica, constitutes two cascade light Comb for dividing waves devices.
6, the light Comb for dividing waves device that has multiple optical fiber collimating according to claim 1 is characterized in that,
One end of described smooth Comb for dividing waves device core connects the reflection-type collimating apparatus of being made up of six fine jumper, and the six roots of sensation optical fiber that described six fine jumper connect is respectively first incident optical, second incident optical, the 3rd incident optical, first mirror based fiber optica, second mirror based fiber optica and the 3rd mirror based fiber optica;
The other end of described smooth Comb for dividing waves device core connects the transmission-type collimating apparatus of being made up of three fine jumper, and three optical fiber that described three fine jumper connect are respectively the first transmission optical fiber, the second transmission optical fiber and the 3rd transmission optical fiber.
7, the light Comb for dividing waves device that has multiple optical fiber collimating according to claim 6, it is characterized in that, described first incident optical is as the incident end, described first mirror based fiber optica is connected with described second incident optical, described second mirror based fiber optica is as reflection end, the described first transmission optical fiber is connected with described the 3rd incident optical, and described the 3rd transmission optical fiber constitutes anti-/ transmission cascade light Comb for dividing waves device as the transmission end.
According to the arbitrary described light Comb for dividing waves device that has multiple optical fiber collimating of claim 1-7, it is characterized in that 8, the fiber core of the optical fiber in the jumper in the described collimating apparatus of being made up of the jumper of two optical fiber at least is apart from identical or different.
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| CN2008101186356A CN101344618B (en) | 2008-08-20 | 2008-08-20 | Optical comb type wave separator with multiple optical fiber collimating device |
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| CN2008101186356A CN101344618B (en) | 2008-08-20 | 2008-08-20 | Optical comb type wave separator with multiple optical fiber collimating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102546078A (en) * | 2011-12-31 | 2012-07-04 | 中兴通讯股份有限公司 | Ultra-dense wavelength division multiplexing system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102546078A (en) * | 2011-12-31 | 2012-07-04 | 中兴通讯股份有限公司 | Ultra-dense wavelength division multiplexing system and method |
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