CN202994433U - Y-type optical waveguide parameter measuring device - Google Patents
Y-type optical waveguide parameter measuring device Download PDFInfo
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- CN202994433U CN202994433U CN 201220749548 CN201220749548U CN202994433U CN 202994433 U CN202994433 U CN 202994433U CN 201220749548 CN201220749548 CN 201220749548 CN 201220749548 U CN201220749548 U CN 201220749548U CN 202994433 U CN202994433 U CN 202994433U
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- power meter
- optical waveguide
- parameter measuring
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Abstract
The utility model discloses a Y-type optical waveguide parameter measuring device. The device comprises: a measuring light source which belongs to a DFB butterfly-shaped fiber laser wherein the output end of the measuring light source is connected with the input end of a to-be-measured optical device; an optical power meter which is connected with the output end of the to-be-measured optical device and belongs to a hand-held fiber power meter HW3208, wherein an optical port of the optical power meter is a universal interface that can be connected with an FC connector, an SC connector, an ST connector and an LC connector; and a DC stabilized voltage power source that is connected with the to-be-measured optical device. The Y-type optical waveguide parameter measuring device has a simple structure, is convenient to use and is high in measurement precision.
Description
Technical field
The utility model relates to a kind of measurement mechanism, particularly a kind of Y type optical waveguide parameter measuring apparatus.
Background technology
Optical waveguide is as a significant components of integrated optical circuit, have a wide range of applications in fields such as optical communication, optical information processing, photometry calculation and light sensings, become the study hotspot in integrated optics field, and have very large potentiality, receive much concern in recent years, the indices of therefore understanding it is most important.In many indexs of optical waveguide, insertion loss is one of extremely important index; This project has highlighted measurement mechanism and the measuring method of one of index insertion loss; For insertion loss, be mainly to build measurement mechanism according to measuring principle, the factor of analyzing influence insert loss theoretically.
Along with increasing sharply and the continuous expansion of light signal parallelization degree for the treatment of of transmission capacity in optical communication and information handling system, message transmission rate status in generation information is heavy; The optical fiber access becomes a kind of mode of main flow, have that message capacity is large, repeater span is long, security performance is good, adaptable, volume little lightweight, the starting material source is wide, the advantage of cheap grade, following application in the broadband internet access can be expected very extensive; For satisfying the requirement of information age today, the development of optical device develops into the present integrated optics stage from traditional discrete optical device.
Waveguide is widely used in integrated optics system as a kind of integrated optical device, and it can be divided into the light beam ripple two-beam ripple, also the two-beam ripple can be merged into a branch of light wave.
In recent years, along with popularizing of Internet, the demand of user terminal communication capacity increases rapidly.The core of high-speed high capacity communication system is the optics of user network, with the cable in optical fiber replacement user website.The optical-waveguide-type device is little due to its volume, integrated level is high, adopt planar technology to be fit to the characteristics such as batch production, just day by day comes into one's own and expects to obtain early practicality; Consider from network cost, economization degree, reduce insertion loss is important problem always.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of simple in structure, easy to use, a kind of Y type optical waveguide parameter measuring apparatus that measuring accuracy is high.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of Y type optical waveguide parameter measuring apparatus comprises
One measurement light source, described measurement light source are DFB butterfly fiber laser, and the output terminal of described measurement light source is connected with the input end of tested optical device;
One light power meter that is connected with tested optical device output terminal, described light power meter is hand-held Fiber Dynamometer HW3208, the optical port of described light power meter is general-purpose interface, can connect FC, SC, ST, LC connector;
One D.C. regulated power supply that is connected with tested optical device.
In an embodiment of the present utility model, described Y type optical waveguide parameter measuring apparatus also comprises an adapter, and described adapter is placed between tested optical device and light power meter.
In an embodiment of the present utility model, the output wavelength of described measurement light source is 1310nm, 1490nm or 1550nm.
In an embodiment of the present utility model, the wavelength calibration scope of described light power meter is 800nm～1700nm.
In an embodiment of the present utility model, the power measurement scope of described light power meter is-70～+ 10dBm.
In an embodiment of the present utility model, described light power meter is the light power meter of built-in charged lithium cells.
In an embodiment of the present utility model, the interface of described light power meter is the PC optical fiber interface.
By technique scheme, the beneficial effects of the utility model are:
The utility model is simple in structure, easy to use, measuring accuracy is high, can be used for measuring the insertion loss of tested device.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the utility model measuring principle Fig. 1;
Fig. 2 is the utility model measuring principle Fig. 2.
Numeral and the represented corresponding component title of letter in figure:
10, measurement light source 20, tested optical device 30, light power meter 40, D.C. regulated power supply.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to illustrated in figures 1 and 2, a kind of Y type of the utility model optical waveguide parameter measuring apparatus comprises measurement light source 10, light power meter 30 and D.C. regulated power supply 40, the output terminal of measurement light source 10 is connected with the input end of tested optical device 20, light power meter 30 is connected with tested optical device 20 output terminals, and D.C. regulated power supply 40 is connected with tested optical device 20.
The utility model measurement light source is DFB butterfly fiber laser, and its wavelength coverage is wide, making is simple, cost is low, be easy to a large amount of productions, and volume is little, lightweight, the life-span is long; Special technique due to the inner grating of Distributed Feedback Laser, any centre wavelength between can screening from 750nm to 3500nm, the Distributed Feedback Laser of even longer centre wavelength, be applicable in GPON or EPON speed fiber optic communication systems, making its wavelength that produces is 1310nm-1550nm, and namely output wavelength is three kinds of wave bands of 1310/1490/1550nm.
In order to make optical fiber have unified international standard, International Telecommunications Union (ITU) (ITU-T) has formulated unified sonet standard (G standard); In order to adapt to the development need of new technology, at present G.652 type optical fiber be further divided into G.652A, G.652B, three subclasses G.652C, G.655 type optical fiber also be further divided into G.655A, two subclasses G.655B.
In optical communication network EPON technology, OLT adopts WDM technology between ONU, meets the ITU-T sonet standard, up use 1220nm～1310nm wavelength; Descending use 1490nm～1550nm wavelength; And adopt three kinds of 1310/1490/1550nm more.
Adopted the technology of wavelength-division multiplex, the optical fiber of use is different, and the distance that transceiver can transmit is also different, the emissive power of 5 kilometers fiber optical transceivers generally-20～-14db between, receiving sensitivity is-30db, the wavelength of use 1310nm; And the emissive power of 120 kilometers fiber optical transceivers is many between-5～0dB, and receiving sensitivity is-38dB to use the wavelength of 1550nm.
This routine wavelength is 1310nm and 1550nm,
When test condition is Iw=Ith+20mA:
λ=1310nm/1550nm；
Spectrum spectrum width Δ λ=0.3/0.55;
Threshold current Ith=15mA/20mA;
Tail optical fiber Output optical power Po=0.3mW(is minimum)/2.5mW(is maximum) (λ=1310nm);
Tail optical fiber Output optical power Po=0.3mW(is minimum)/2mW(is maximum) (λ=1550nm).
The utility model light power meter is hand-held Fiber Dynamometer HW3208, is widely used in the fields such as optical fiber communication, CATV, Fibre Optical Sensor, optical information processing, is indispensable optical tests instrument in scientific research and engineering construction; Highly sensitive, measure accurately, volume is little, lightweight, be easy to carry and low-power consumption; Wavelength coverage 800nm～1700nm, power measurement scope-70～+ 10dBm, need not external power supply, adopt built-in charged lithium cells, therefore be convenient for carrying; The optical port of light power meter is general-purpose interface, can connect FC, SC, ST, LC connector.
The utility model Y type optical waveguide parameter measuring apparatus also comprises an adapter, and adapter is placed between tested optical device and light power meter.
In use should often keep interface end face cleaning, without fat, pollution-free; Before measuring, must carry out cleaning to total interface surface and adapter, any connector with scratch or dirt can make the performance of system give a discount, and in obsolete situation, should cover protective sleeve as far as possible; Light power meter can be measured different wave length, and there is different detection commutation circuits its inside, only needs light finger flicking button once during use, just switches to needed wavelength, i.e. 1310nm and 1550nm; When the luminous power conversion, can follow the tracks of fast and measure in real time display light power; It should be noted that during measurement, when optical source wavelength is 1310nm, light power meter also should be chosen the 1310nm wave band, the numerical value of this moment can be read by the LCD liquid crystal panel on light source and light power meter, namely the power meter operation wavelength should be corresponding with LASER Light Source, otherwise be invalid for measurement data.
In addition, the light power meter interface is standard component FC optical fiber interface, and optical fiber inserts the FC/UPC fibre-optical splice after peelling off coat, then inserts the light power meter output interface.
One D.C. regulated power supply that is connected with tested optical device.
The step of the measuring method of the utility model Y type optical waveguide parameter measuring apparatus is as follows;
(1) before measurement, first to the light power meter setting of making zero; At first carry out inspection work, adapter, measurement light source, light power meter interface, jumping fiber chieftain, tail optical fiber chieftain recruitment industry alcohol wipe is clean;
(2) moreover the light source that takes out on jumping fiber be connected with a jumping fiber with light power meter, point this moment to need only and one press calibration knob gently, just can make zero;
(3) when measuring the 1550nm wavelength, light power meter and measurement light source all are transferred to 1550, namely measurement light source and light power meter LCD panel all show 1550; After optical fiber is peelled off coat, inject the FC fibre-optical splice, and then inject the measurement light source optical interface; Measured object is if not the FC optical fiber interface can be used the FC/SC/LC adapter at this moment, and the other end also can use the same method, then inserts the light power meter interface;
(4) computing formula of insertion loss (Li):
In formula: Li is insertion loss; Pi is for cutting off place's input optical power; POMAX is tail optical fiber output total optical power maximal value.
(5) open measurement light source, regulate light polarization state or direct current biasing working point, make the tail optical fiber output total optical power of tested optical device reach maximal value POMAX(referring to Fig. 1);
(6) jumping fiber between tested optical device and measurement light source is changed to tail optical fiber, measures Output optical power Pi with light power meter, calculate insertion loss (referring to Fig. 2) according to (1) formula.
Above demonstration and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and instructions just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (7)
1. a Y type optical waveguide parameter measuring apparatus, is characterized in that: comprise
One measurement light source, described measurement light source are DFB butterfly fiber laser, and the output terminal of described measurement light source is connected with the input end of tested optical device;
One light power meter that is connected with tested optical device output terminal, described light power meter is hand-held Fiber Dynamometer HW3208, the optical port of described light power meter is general-purpose interface, can connect FC, SC, ST, LC connector;
One D.C. regulated power supply that is connected with tested optical device.
2. a kind of Y type optical waveguide parameter measuring apparatus according to claim 1, it is characterized in that: described Y type optical waveguide parameter measuring apparatus also comprises an adapter, and described adapter is placed between tested optical device and light power meter.
3. a kind of Y type optical waveguide parameter measuring apparatus according to claim 1, it is characterized in that: the output wavelength of described measurement light source is 1310nm, 1490nm or 1550nm.
4. a kind of Y type optical waveguide parameter measuring apparatus according to claim 1, it is characterized in that: the wavelength calibration scope of described light power meter is 800nm～1700nm.
5. a kind of Y type optical waveguide parameter measuring apparatus according to claim 1 is characterized in that: the power measurement scope of described light power meter is-70～+ 10dBm.
6. a kind of Y type optical waveguide parameter measuring apparatus according to claim 1, it is characterized in that: described light power meter is the light power meter of built-in charged lithium cells.
7. a kind of Y type optical waveguide parameter measuring apparatus according to claim 1, it is characterized in that: the interface of described light power meter is the PC optical fiber interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220749548 CN202994433U (en) | 2012-12-31 | 2012-12-31 | Y-type optical waveguide parameter measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220749548 CN202994433U (en) | 2012-12-31 | 2012-12-31 | Y-type optical waveguide parameter measuring device |
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| CN202994433U true CN202994433U (en) | 2013-06-12 |
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| CN 201220749548 Expired - Fee Related CN202994433U (en) | 2012-12-31 | 2012-12-31 | Y-type optical waveguide parameter measuring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153299A (en) * | 2015-03-24 | 2016-11-23 | 欣兴电子股份有限公司 | Optical detection apparatus and optical detecting method |
| CN109309527A (en) * | 2018-11-23 | 2019-02-05 | 国家电网有限公司 | Optical power measuring device |
-
2012
- 2012-12-31 CN CN 201220749548 patent/CN202994433U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153299A (en) * | 2015-03-24 | 2016-11-23 | 欣兴电子股份有限公司 | Optical detection apparatus and optical detecting method |
| CN109309527A (en) * | 2018-11-23 | 2019-02-05 | 国家电网有限公司 | Optical power measuring device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20141231 |
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| EXPY | Termination of patent right or utility model |