CN1427557A - Multiterminal optical access/out multiplexer and partial wave multiplexer - Google Patents
Multiterminal optical access/out multiplexer and partial wave multiplexer Download PDFInfo
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Abstract
A multi-port optical add-in/couple-out multiplexer and demultiplexer is based on the collimator with multiple I/O ports. It has 6 ports altogether and is similar to two three-port add-in/couple-out devices. Several such devices can be serially connected to form multiplexer/demultiplexer. Its advantages are less number of element, low cost and small size.
Description
Technical field
The present invention is and wave division multiplexing (WDM) multiplexer (wave division multiplex, WDM) and optics adding/out multiplexer (optical add-drop Multiplexer, OADM) relevant, specifically, be meant that a kind of framework is at the high density integration wave division multiplexing (WDM) multiplexer (High Density Integrated WDM device) that has on the micro-optic of Thin Film Filter.
Background technology
When the information circulation in the modern society is day by day grown up, when the complexity, the demand of data transmission of power promptly becomes an important topic in the scientific and technological world; Yet entity and factor have economically but limited the feasibility that increases transmission of power; For example, extra optical fiber is installed to be increased extra signal channel and will become very expensive, and the member of electronic system may limit the data transmitting speed on entity; The use of wave division multiplexing (WDM) multiplexer (WDM) provides a simple and economic mode, use multiplex (MUX)/anti-multiplex's technology of wavelength by transmission of allowing the multi-wavelength light source and the optical fiber that see through to receive single wavelength light source, can increase the transmission of power of Fiber Optical Communication System;
Low-density wave division multiplexing (WDM) multiplexer CWDM and high density wave division multiplexing (WDM) multiplexer DWDM generally see the market at present, the difference of the two is the spectrum interval of transmission signals, the former has the channel spacing of broad, and tolerable uses the generating laser that is not cooled, and the latter then has less channel spacing and is the specified wavelength of WDM so need to use cooled laser to control its laser light wavelength exactly; In addition, the product of WDM class can use the interconnection path in regional or entity, and wherein the mode that links of this data no longer is point-to-point mode, but ring-type or mesh architecture; In this example, decoupling or add a wavelength signals and promptly become an important problem at an arbitrary position, so, optics adding/decoupling module (OADM) promptly with WDM optics network system in multiplex (MUX)/anti-multiplex's technology no less important.
The product of OADM class and WDM class all can use micro-optic technology and insulation film filter to make in a large number, with United States Patent (USP) the 6th, 198, No. 858 patents are example, with reference to its Fig. 1 (a), one double-fiber collimator 108, have an a pair of optical fiber pigtail 103 and collimation lens a 102 (GRIN lens for example, or other any focusing convex lens), receive input light from input optical fibre 105, this light comprises the signal of several different wave lengths, this insulation film filter 101 allows the light of predetermined wavelength lambda pass through, utilize the output optical fibre 107 of this secondary signal optical fiber collimator 109 by lens 102 collection light signal to the second pigtails 104 then, the light signal of its commplementary wave length (being not equal to λ) is the output optical fibre 106 of reflected back first collimater then; Aforesaid three port OADM provide a kind of " decoupling (drop) " function, if we reverse aforesaid optical signal movement direction, the light signal of a wavelength X is inserted into the optical fiber 107 of second pigtail 104, and the light signal that a group that can enter with the optical fiber 106 by first pigtail 103 is different from wavelength X is injected towards optical fiber 105; That is to say, make this device present optics " add add " or " decoupling drop " module, depend on the direction that light signal moves fully, with regard to a wavestrip filter, decoupling spectrum is the solid line that is shown among Fig. 1 (d), and reflectance spectrum is with dotted line 111 expression: aforesaid overall structure is to be arranged at one with in epoxy machine or the solid housing that is welded, so that stable in the mechanism to be provided; This kind structure has been proved to be to provide industrial reliable OADM device in the past few years, has the tolerance of splendid humidity and ambient temperature;
Use two identical usual means shown in the earlier figures 1 (a), we can realize " adding an and decoupling " module easily, for example, Fig. 1 (b) promptly expresses one or four ports and adds and the decoupling module, include two identical three port OADM 100, be by two output optical fibre 106-1 with this OADM100-1 and OADM 100-2,106-2 link together form; In this case, when the light of a wavelength X begins by this OADM 100-1 decoupling to optical fiber 107-1, the light of its wavelength promptly is reflected onto optical fiber 106-2 and inputs to the optical fiber 106-2 of second three port OADM100-2, as described above the mode of OADM as " adding " module, the light that only is added to its commplementary wave length of a new wavelength X by the output optical fibre 105-2 of OADM102; Thus, promptly to become be the OADM of one or four ports to aforementioned structure.Be noted that, because original signal is by twice (in OADM 100-2 and 100-2) of this Thin Film Filter reflection, therefore by finding out among Fig. 1 (d), the interior wavestrip that solid line 112 is had is isolated the twice that (in-band isolation) (for example, the light of the light that can find out original decoupling wavelength at output port 105-2 and its commplementary wave length the two difference power) is the represented reflected signal spectrum of dotted line 111; This is very important, because most insulation film filter has wavestrip isolation in the reflection that is less than 15dB, is not enough to fill part interference that the original decoupling signal of elimination is produced; Be increased to twice by interior wavestrip is isolated, we can obtain the numerical value greater than 25dB, be enough to satisfy most application, and the spectrum of decoupling and adding still keep the original state shown in solid line 110.
We also can use 3 port OADM100 to set up a multichannel multiplexer or an inverse multiplexer; Shown in Fig. 1 (c), a n port WDM mainly is the input optical fibre 105 that is connected to the OADM of back by the output optical fibre 106 with the OADM of front, forms with the OADM 100-λ n serial connection of n different wave length; When desire is used as multiplexer, the signal of each different wave length is delivered to respectively in each optical fiber 107-λ x independently, and formed a mixed signal by these OADM 101-λ x (use and add function) output optical fibre 105-λ 1 that is incorporated into continuously, be conveyed into then in the optical fiber and be sent to receiving terminal; Desire is when the inverse multiplexer, and with mixed signal (having all wavelengths signal) the optical fiber 105-λ 1 that makes a gift to someone, the signal of specific wavelength is continuous being separated by each OADM 101-λ x, and is sent to each output optical fibre 107-λ x respectively; This technology has become in the present fiber optic component industry the most normal use at the CWDM and the DWDM of 4,8,16 ports.
Compete day by day and continue and to reduce cost when the WDM industry becomes, and when taking into account littler package dimension again simultaneously with higher reliability, it is quite important that the present invention promptly seems,, can and then reduce cost and make more downsizing of package dimension because but the present invention's let us is made more groups OADM with the components identical number.
Summary of the invention
Main purpose of the present invention is to provide a kind of multi-port optical adding/out multiplexer and wave division multiplexing (WDM) multiplexer, and it can reduce cost.
Of the present invention time a purpose is to provide a kind of multi-port optical adding/out multiplexer and wave division multiplexing (WDM) multiplexer, and it can dwindle package dimension.
For achieving the above object, a kind of multi-port optical adding/out multiplexer provided by the invention and wave division multiplexing (WDM) multiplexer include:
One first collimater has first and second to optical fiber;
One second collimater has first and second decoupling optical fiber;
One filter supplies the light of predetermined wavelength to pass through, and makes the light reflection of non-predetermined wavelength, and this filter is arranged between this first and second collimater, thus
Reflection, that is, in first pair of optical fiber, the light of the non-predetermined wavelength that is transmitted by first optical fiber reflexes to second optical fiber;
By, that is, in first pair of optical fiber, the light of the predetermined wavelength that is transmitted by first optical fiber enters this first decoupling optical fiber by this filter;
Reflection, that is, in second pair of optical fiber, the light of the non-predetermined wavelength that is transmitted by first optical fiber reflexes to second optical fiber;
By, that is, in second pair of optical fiber, the light of the predetermined wavelength that is transmitted by first optical fiber enters this second decoupling optical fiber by this filter.
The present invention includes:
One first collimater has first and second to optical fiber, and first optical fiber of first pair of optical fiber is as input optical fibre, and first optical fiber of second pair of optical fiber is as output optical fibre, and second optical fiber of first pair of optical fiber and second optical fiber of second pair of optical fiber are coupled;
One second standard is looked into device, has a decoupling optical fiber and one and adds optical fiber;
One filter supplies the light of predetermined wavelength to pass through, and makes the light reflection of non-predetermined wavelength, and this filter is arranged between this first and second collimater, thus
Reflection, that is, the light of the non-predetermined wavelength that is transmitted at first optical fiber of first pair of optical fiber reflexes to second optical fiber of first pair of optical fiber;
By, that is, the light of the predetermined wavelength that is transmitted at first optical fiber of first pair of optical fiber enters this decoupling optical fiber by this filter;
Reflection, that is, the light of the non-predetermined wavelength that is transmitted at second optical fiber of second pair of optical fiber reflexes to first optical fiber of second pair of optical fiber;
By, that is, the light of the predetermined wavelength that is transmitted by this adding optical fiber enters first optical fiber of this second pair of optical fiber by this filter.
The present invention includes:
One first collimater has at least four pairs of optical fiber;
One second collimater has at least four optical fiber;
One filter supplies the light of predetermined wavelength to pass through, and makes the light reflection of non-predetermined wavelength, and this filter is arranged between this first and second collimater, thus
Reflection, that is, each light to the first non-predetermined wavelength that optical fiber transmits of optical fiber in this first collimater certainly reflexes in this first collimater each to second optical fiber of optical fiber;
By, that is, each light to first predetermined wavelength that optical fiber transmits of optical fiber in this first collimater enters optical fiber corresponding in this second collimater by this filter certainly.
Wherein second optical fiber of this first pair of optical fiber is by the second optical fiber coupling of a low-loss small-sized (minisize) fibre-optical bending (fiber bend) with this second pair of optical fiber.
Wherein this low-loss miniature fiber bending has a high-NA (high NA) optical fiber.
Wherein this low-loss small-sized (minisize) fibre-optical bending has diameter reduction (diameter-reduced) optical fiber.
Wherein the reflection coupling that is arranged between the optical fiber that is used for eliminating first collimater of this filter contains phenomenon (reflection coupling).
Wherein first input optical fibre of second optical fiber of first pair of optical fiber and second multi-port optical adding/out multiplexer coupling in this first collimater reaches second input optical fibre coupling of second optical fiber and the second multi-port optical adding/out multiplexer of second pair of optical fiber in this first collimater.
In sum, the invention provides the structure of a kind of OADM, compared to known technology, it has most I/O optical fiber, use structure of the present invention, we can use the element that is equivalent to half quantity of known structure to make the OADM device of one four port; And we also can use the OADM that produces two-4 ports with single element that leads the communication system equal number of known two optical fiber; And we can technology according to the present invention produce single guiding communication system that complete multiplex (MUX)/anti-multiplex module is applied to two optical fiber.
Description of drawings
Relevant detailed structure of the present invention, feature and effect are below lifted a preferred embodiment, and conjunction with figs. is further described, wherein:
Fig. 1 (a) is the structural representation of known 3 port OADM;
Fig. 1 (b) is the structural representation that 4 known port OADM are established in 2 groups of 3 identical port OADM;
Fig. 1 (c) is the structural representation of known n port WDM;
Fig. 1 (d) is 3 known ports and the output spectrum schematic diagram of 4 port OADM;
Fig. 1 (e) is the known singly structural representation of two optical fiber WDM communication systems of guiding;
Fig. 1 (f) is that known two guiding WDM communication systems use the schematic diagram at optical circuit;
Fig. 2 is the structural representation of a preferred embodiment of the present invention, shows the structure of 6 port OADM;
Fig. 3 is the one 4 port OADM structural representations of a preferred embodiment of the present invention;
Fig. 4 is the structural representation of a preferred embodiment of the present invention, shows the structure of complete multiplex (MUX)/inverse multiplexer;
Fig. 5 is the structural representation of the 8 port Optical devices of a preferred embodiment of the present invention;
It (b) is to show that two embodiment represent the structure of 12 ports and 16 port Optical devices respectively that Fig. 6 (a) reaches;
It (b) is to show that two embodiment represent that two collimaters respectively have two pairs of optical fiber that Fig. 7 (a) reaches, and is different arrangement modes;
It (b) is to show that two embodiment represent that two collimaters respectively have four pairs of optical fiber that Fig. 8 (a) reaches, and is different arrangement modes;
It (b) is to show that two embodiment represent that two collimaters respectively have the odd number optical fiber of different numbers that Fig. 9 (a) reaches.
Embodiment
See also Fig. 2, a kind of multi-port optical adding/out multiplexer and wave division multiplexing (WDM) multiplexer that a preferred embodiment of the present invention provided, its basic structure is to be one 6 port Optical devices; The one optical fiber pigtail 203 with at least four optical fiber is inserted in a glass ring and surface by polishing and add the antireflection plated film; Collimator lens 102 has four backlight fibres before one, just in time is aligned with aforementioned four optical fiber; By the symmetrical optical path structure of this kind, the light of being exported by an optical fiber promptly can be reflected (this filter need place the appropriate location) by a WDM filter 101, and enters in the backlight fibre with this optical fiber symmetry; Thus, the light of being exported by optical fiber 205-1 promptly reflexes among the optical fiber 206-1, and the light that optical fiber 205-2 is exported promptly reflexes to optical fiber 206-2; Simultaneously, second optical fiber collimator 209 with at least two output optical fibre 207-1 and 207-2 is located at the appropriate location and is received the light that optical fiber 205-1 and 205-2 are transmitted respectively, thus, optical fiber 205-1,206-1,207-1 and filter 101 formed combinations promptly are analogous to three known port OADM, and optical fiber 205-2,206-2,207-2 and filter 101 promptly are analogous to another three known port OADM; This three group of three port OADM individually independent action in any optics interface; Therefore this kind structure also provides two groups of three identical port devices, and it only needs can reach with the element of three known port device equal numbers.
Please consult Fig. 3 again, utilize technology of the present invention, we can make one group of four port adding/decoupling module (4-port add-and-drop module); By with two output optical fibre 206-1,206-2 connects, and making optical fiber 205-1 is an input port, and optical fiber 205-2 is an output port, and optical fiber 207-1 is the decoupling port, and optical fiber 207-2 can form one 4 port OADM for adding inbound port; Connected mode between optical fiber 206-1 and 206-2 can be and fuses or the mechanical type connection, or forms in the pigtail in direct some for optical fiber; It is noted that, in order to keep the low conduction loss in the optical fiber, this two optical fiber 206-1, the bending radius of 206-2 must remain on 15mm at least, could satisfy the coml demand, for example, SMF-28; This kind restriction has caused the volume of whole device to dwindle; In order to improve this situation, we can be connected in optical fiber 206-1,206-2 with one section high-NA (high NA) optical fiber, to reach littler bending radius and to keep the effect that low light consumes, and then reduce the demand of fibre-optical bending zone to the space, also therefore single unit system can be packaged into littler size (the about 5-10mm of diameter); Another kind method (for example is to use suitable optical fiber thinning technology (fiber-thinning technique), optical fiber melts or etching) directly reduce the diameter of SMF-28 optical fiber, it mainly is small-sized (minisize) bending of making a high-NA section and a low insertion loss being provided, its detailed content is recorded in United States Patent (USP) the 5th, 138, No. 676; In aforementioned two kinds of structures, the special fiber section can promptly be incorporated in the glass ring before pigtail shaping and AR plated film, to reduce manufacture difficulty;
In most communication network, all need between two end points, transmit information two-wayly, and this demand can be solved by a kind of pair-optical fiber designs, shown in Fig. 1 (e), (each system has a multiplexer 121 wherein to have two identical list-range ties, one inverse multiplexer 122, and Transmission Fibers 124) reverse signal can be got rid of; We also can use list-fibre system, and shown in Fig. 1 (f), wherein optical circulator 123 is to use in each communication and holds the separate optical signals that is used for different directions; This kind method is applicable to the situation of using single optical fiber on transmission line, under extremely long transmission range, can reduce the expense of putting of building in a large number; In aforementioned two kinds of modes, all need install a multiplexer module and an inverse multiplexer module respectively in two transmission ends; We can make multiplexer and the inverse multiplexer of two boxes that separate in order to ccontaining use traditional OA DM shown in Fig. 1 (c) traditionally; Yet we can use the present invention that this two box is integrated into one, and only use the number of components identical with an inverse multiplexer; This kind structure is used 6 port Optical devices 200-λ x of most different wave lengths as shown in Figure 4; Because each 6 port device 200 has all been represented two 3 identical port OADM, thus we can by with most 3 port OADM along mode shown in Fig. 1 (c) be connected in series realize out about two groups multiplexer and inverse multiplexer; Therefore this kind device has also proposed two multiplexers, two inverse multiplexers, or one-to-many path multiplexer in unitary package and a pair of inverse multiplexer (moving direction that depends on light signal), and then has reduced the expense of putting of building greatly;
With the present invention bn that maximizes is possible, for example, as shown in Figure 5, second collimater 504 can be built and is changed to the output optical fibre (being to be 4 in this example) that has with first collimater, 503 similar numbers, if wherein two optical fiber of this second collimater do not use, then its effect that can show and shown in Figure 2 similar; Further, as Fig. 6 (a) and (b), the system of one 12 optical fiber and 16 optical fiber can build according to identical notion and put, wherein, the rounded arrangement of optical fiber in the glass ring 603 of the two or 605, each optical fiber to having a backlight fibre, can be realized triple three ports and quadruple three port OADM (wherein the half optical fiber of second collimater is not to be used) along its major axis thus; Can use though please note other optical fiber arrangements mode,, in each framework, each interval to optical fiber must remain unchanged, and the angle of light of filter 101 must remain unchanged too, to keep the centre wavelength of each output spectrum;
Yet, sometimes the optical fiber in pigtail also is useful to using non-paired optical fiber in the mode of the center heart, Fig. 7 (a) reaches the arrangement mode that (b) promptly shows two kinds of different shapes, in Fig. 7 (a), horizontal fiber pair and vertical fiber between the range difference of the center heart be (√ 3-1) d=0.3205d, wherein d is a fibre diameter; In Fig. 7 (b), inner fiber pair and infrared optical fiber between range difference can adjust easily by the design that changes glass ring; As everyone knows, the distance that changes between optical fiber can change the angle of light of filter, and the spectrum generation phase-shifted that also makes reflection simultaneously and transmit; Test as can be known factually.Use 0.23 spacing that NSG company produces and the diameter grin lens as 1.8mm, when the optical fiber spacing was increased to 0.200mm by 0.125mm, optical wavelength almost was about-the 6.1nm/mm linear decrease with coefficient; Therefore, if the optical fiber arrangements in the pigtail become two optical fiber between spacing when being 0.06557mm, two three port devices will have the two different centre wavelengths that are spaced apart 0.4nm; A kind of possible arrangement mode is shown in Fig. 7 (a), wherein horizontal fiber pair and vertical fiber to the range difference of the center heart be (√ 3-1) d=0.73205d, wherein d is a fibre diameter, therefore, range difference corresponding to the needed 0.06557mm of the about 0.090mm of fibre diameter, can obtain easily, for example, coml 0.125mm optical fiber will be adjusted to correct diameter in the chemical etching mode; If the channel space of multiplexer (or inverse multiplexer) is 0.4mm, then aforementioned structure is promptly particularly useful, this is because a device of aforementioned structure can replace the next-door neighbour's of two shown in Fig. 1 (c) tradition three port devices, has therefore reduced and has built the expense of putting and overall dimensions size; And big central wavelength difference, for example, about 1.6nm also can see through and utilize the structure shown in Fig. 7 (b) to obtain, and wherein the optical fiber spacing is bigger, but actual distance will be different because of different collimator lens; Obviously, this kind mode can be used in more than two optical fiber on the above structure, and for example shown in Fig. 8 (a), some optical fiber is to having approaching separation distance, or shown in Fig. 8 (b), different fully to each other.
Other useful optical components can be implemented equally, the formed filter arrays of technology for example according to the present invention, with Fig. 5 is example, by four of optical fiber 505-1,505-2,505-3,505-4 different input light, by filter 101, received by output optical fibre 508-1,508-2,508-3,508-4 respectively; Thus, can provide a kind of and be less than the conventional components number, and the filter arrays that is linear array (in-line) and is made up of four paired elements, the light of non-paired wavelength also can be by using Fig. 7 or structure shown in Figure 8 obtained; Particularly, avoiding allowing the input optical signal that transmitted by an optical fiber be reflected onto in the identical collimater will have its necessity in the backlight fibre corresponding to opposite location, and thus, the input light source light that will can not be reflected disturbs; Have two kinds of methods can reach this purpose, first method is that painstakingly the filter 101 that makes tilts a little so that light is not to reflex in the fiber port very accurately; Second method then is to make the position of optical fiber in pigtail present asymmetrical state, and two kinds of examples are shown in Fig. 9, and wherein three of odd number or five optical fiber can be with the scheme that solution is provided; Linearly aligned filter can be flat gainization (gain-flattening) filter, or be spontaneous noise (spontaneous emission noise) filter, can be used to amplifier, or the WDM filter of inverse multiplexer is used for increasing the unicity of signal as optical fiber.
Aforementioned each embodiment of the present invention is used for explanation, be not in order to limit the scope of the invention, the present invention is changed slightly or revises for the personnel that know this technology is very easy, but it can not deviate from the scope that the present invention is contained, for example, though the output optical fibre of predetermined number has been described to implement OADM and multiplexer/inverse multiplexer, according to technology of the present invention, any suitable combination all can be used to produce a predetermined OADM or a multiplexer/inverse multiplexer structure; Thus, the claim of dependent claims has comprised all possible variation and modification, and then can be included in the real intention of the present invention.
Claims (8)
1. multi-port optical adding/out multiplexer and wave division multiplexing (WDM) multiplexer include:
One first collimater has first and second to optical fiber;
One second collimater has first and second decoupling optical fiber;
One filter supplies the light of predetermined wavelength to pass through, and makes the light reflection of non-predetermined wavelength, and this filter is to be arranged between this first and second collimater, thus
Reflection, that is, in first pair of optical fiber, the light of the non-predetermined wavelength that is transmitted by first optical fiber reflexes to second optical fiber;
By, that is, in first pair of optical fiber, the light of the predetermined wavelength that is transmitted by first optical fiber enters this first decoupling optical fiber by this filter;
Reflection, that is, in second pair of optical fiber, the light of the non-predetermined wavelength that is transmitted by first optical fiber reflexes to second optical fiber;
By, that is, in second pair of optical fiber, the light of the predetermined wavelength that is transmitted by first optical fiber enters this second decoupling optical fiber by this filter.
2. multi-port optical adding/out multiplexer and wave division multiplexing (WDM) multiplexer is characterized in that, include:
One first collimater has first and second to optical fiber, and first optical fiber of first pair of optical fiber is as input optical fibre, and first optical fiber of second pair of optical fiber is as output optical fibre, and second optical fiber of first pair of optical fiber and second optical fiber of second pair of optical fiber are coupled;
One second standard is looked into device, has a decoupling optical fiber and one and adds optical fiber;
One filter can pass through for the light of predetermined wavelength, and makes the light reflection of non-predetermined wavelength, and this filter is arranged between this first and second collimater, thus
Reflection, that is, the light of the non-predetermined wavelength that is transmitted at first optical fiber of first pair of optical fiber reflexes to second optical fiber of first pair of optical fiber;
By, that is, the light of the predetermined wavelength that is transmitted at first optical fiber of first pair of optical fiber enters this decoupling optical fiber by this filter;
Reflection, that is, the light of the non-predetermined wavelength that is transmitted at second optical fiber of second pair of optical fiber reflexes to first optical fiber of second pair of optical fiber;
By, that is, the light of the predetermined wavelength that is transmitted by this adding optical fiber enters first optical fiber of this second pair of optical fiber by this filter.
3. multi-port optical adding/out multiplexer and wave division multiplexing (WDM) multiplexer include:
One first collimater has at least four pairs of optical fiber;
One second collimater has at least four optical fiber;
One filter supplies the light of predetermined wavelength to pass through, and makes the light reflection of non-predetermined wavelength, and this filter is arranged between this first and second collimater, thus
Reflection, that is, each light to the first non-predetermined wavelength that optical fiber transmits of optical fiber in this first collimater certainly reflexes in this first collimater each to second optical fiber of optical fiber;
By, that is, each light to first predetermined wavelength that optical fiber transmits of optical fiber in this first collimater enters optical fiber corresponding in this second collimater by this filter certainly.
4. as according to described multi-port optical adding/out multiplexer of claim 2 and wave division multiplexing (WDM) multiplexer, it is characterized in that wherein second optical fiber of this first pair of optical fiber is by the second optical fiber coupling of a low-loss small-sized (minisize) fibre-optical bending (fiber bend) with this second pair of optical fiber.
5. as according to described multi-port optical adding/out multiplexer of claim 4 and wave division multiplexing (WDM) multiplexer, it is characterized in that wherein this low-loss small-sized (minisize) fibre-optical bending has a high-NA (high NA) optical fiber.
6. as according to described multi-port optical adding/out multiplexer of claim 4 and wave division multiplexing (WDM) multiplexer, it is characterized in that wherein this low-loss small-sized (minisize) fibre-optical bending has diameter reduction (diameter-reduced) optical fiber.
7. as according to claim 1,2,3 described multi-port optical adding/out multiplexer and wave division multiplexing (WDM) multiplexers, it is characterized in that wherein the reflection coupling that is arranged between the optical fiber that is used for eliminating first collimater of this filter contains phenomenon (reflection coupling).
8. as according to described multi-port optical adding/out multiplexer of claim 1 and wave division multiplexing (WDM) multiplexer, it is characterized in that, wherein first input optical fibre of second optical fiber of first pair of optical fiber and second multi-port optical adding/out multiplexer coupling in this first collimater reaches second input optical fibre coupling of second optical fiber and the second multi-port optical adding/out multiplexer of second pair of optical fiber in this first collimater.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009086686A1 (en) * | 2008-01-03 | 2009-07-16 | Oplink Communications, Inc. | Wavelength division multiplexing |
| US7672551B2 (en) | 2005-02-11 | 2010-03-02 | Oplink Communications, Inc. | Configurations and methods for manufacturing optical devices using an athermal platform |
| CN106055509A (en) * | 2016-05-31 | 2016-10-26 | 珠海格力电器股份有限公司 | Optical fiber communication system and optical fiber communication configuration method |
-
2001
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7672551B2 (en) | 2005-02-11 | 2010-03-02 | Oplink Communications, Inc. | Configurations and methods for manufacturing optical devices using an athermal platform |
| WO2009086686A1 (en) * | 2008-01-03 | 2009-07-16 | Oplink Communications, Inc. | Wavelength division multiplexing |
| CN102119350A (en) * | 2008-01-03 | 2011-07-06 | 奥普林克通信公司 | Wavelength division multiplexing |
| US9057841B2 (en) | 2008-01-03 | 2015-06-16 | Oplink Communications, Inc. | Wavelength division multiplexing |
| CN106055509A (en) * | 2016-05-31 | 2016-10-26 | 珠海格力电器股份有限公司 | Optical fiber communication system and optical fiber communication configuration method |
| CN106055509B (en) * | 2016-05-31 | 2022-08-05 | 珠海格力电器股份有限公司 | Optical fiber communication system and configuration method of optical fiber communication |
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