The use of the optical power meter

发表于 2016 年 02 月 17 日 由 jilongen

The use of optical power meter first need to have several conditions: a glowing light source (light source device mouth or transmitted light light path);Test fiber (must be connected to the light source and optical power meter connector, connector does not match the words need to the corresponding converter);Droop (if a high optical power);Optical power meter (electricity).In uncertain light power (high), first the droop in light or optical power meter, one end.Then light source and optical power meter with a fibre-optic link, and open the optical power meter, press “enter” symbol, adjust the corresponding wavelength shows the value plus droop is light power, if measured optical power is not high, suggested  that the droop take next to test again.Used to measure the absolute optical power or by a fiber optical power relative loss.In the optical fiber system, optical power measurement is the most basic, much like the multimeter electronics.In the optical fiber measurement, optical power meter is a commonly used table heavy load.By measuring the transmitting terminal machine or the absolute power of the optical network, an optical power meter can evaluate the performance of the light end equipment.Combinations of light power meter and stability of light source, is able to measure the connection loss, continuity test, and help to evaluate quality of fiber optic link transmission.

 

 

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How to select optical power meter in welding machine maintenance

发表于 2016 年 01 月 28 日 由 jilongen

For welding machine maintenance optical power measurement is essential.According to the specific application of the user to select suitable optical power meter, should pay attention to the following points:

1, select the most optimal probe type and interface type

2, evaluation of calibration precision and manufacturing procedures, scope of fiber and joint requirements with you.

3, make sure the model consistent with your measuring range and display resolution.

4, insertion loss measurement directly, have the dB functions.

Almost all performance in optical power meter, OTDR maintenance optical probe is one of the most should be carefully selected parts.Optical probe is a solid state photoelectric diode, light it receives from the optical network coupling, and converted to electrical signals.Can use special connector interface (a connection type) is only input to the probe, or use the common interface UCI (using the screw connection) adapter.UCI can accept most of the industry standard connector.Based on the selected wavelength calibration factor, optical power meter circuit to convert sensor output signal, the reading light power in dBm way  display (absolute dB is equal to 1 mW, 0 dBm = 1 mW) on the screen.

Choose the optical power meter is the most important standards to probe light types match the expected work wavelength range.Be worth what carry is, as measured in InGaAs in three transfer window has a good performance, compared with germanium InGaAs has in all three Windows more flat spectrum characteristic, in the 1550 – nm window has a higher measuring precision, at the same time with superior temperature stability and low noise characteristics.

The next factor is closely related to the calibration accuracy.Power meter is consistent with your application way of calibration?I.e., the optical fiber and the performance of the connector standard is consistent with your system requirements.What causes should be analyzed using different connection adapter measurement uncertainty?Give full consideration to other potential factors of error is very important, while NIST (American national standards institute of technology) established the American standards, but from different manufacturers of similar type of light source, optical probe, the frequency spectrum of the connector is uncertain.

Determine in accordance with your demand of optical power meter measuring range models.In dBm units, measurement range (range) is a comprehensive parameters, including the minimum/maximum range of input signal (such optical power meter can guarantee the accuracy of all, linearity (BELLCORE is + 0.8 dB) and resolution (usually 0.1 dB or 0.01 dB) whether meet the application requirements.

Light is the most important selection criteria of optical power meter probe types match the expected scope of work.

Most of the optical power meter have the dB function (power), light loss directly read very practical in the measurement.Low cost of optical power meter usually do not provide this functionality.No dB functions, technical personnel must take note of a separate reference value and measured value, and then calculate the difference.So the dB function for relative loss measurements to users, and thus increase productivity, reduce the artificial calculation error.

Optical power meter now, users have the choice of the basic features and functions have been reduced, however, some users to consider the special requirements, including: computer acquisition data record, external interface, etc.

 

 

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Single head driving disc high frequency fusion splicer features

发表于 2016 年 01 月 20 日 由 jilongen

High frequency fusion splicer frequency mainly adopt international industrial band of 27.12 MHz, in line with international standards.High frequency fusion splicer adopts the golden company independent research and development of the battery to avoid electromagnetic radiation interference device system, greatly reduces the high frequency electromagnetic wave to human body face to face with radiation intensity.High frequency fusion splicer can according to need a thermal  plastic welding, plastic, product features, select add stepless heating device, temperature can adjust freely according to the properties of the materials of the corresponding temperature, mainly for the mold surface heating.High frequency fusion splicer adopts the golden electric company their protection systems of the latest research and development, main function is to protect the high frequency tube caused by excessive current unnecessary tube burn out.High frequency fusion splicer adopts the latest technology to prevent lighter device system, mainly using the high sensitivity NL5557 spark device, instant high frequency caused by the excessive current protection of high frequency mould burn out.

 

 

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Notes of optical power meter

发表于 2016 年 01 月 12 日 由 jilongen

The optical power unit of optical power meter is DBM, in optical transceiver or switch the instruction has its light emitting and receiving optical power, usually light is less than 0 DBM, the receiver can receive the minimum light power called sensitivity, can receive the maximum light power minus the sensitivity of the unit is the db (DBM – DBM = db), as the dynamic range, light power minus the receiving optical fiber CuiHaoZhi sensitivity is allowed.When testing the actual luminous power minus the actual received light power of value is the fiber attenuation (db).End receives the light power optimal value is to be able to receive the maximum light power – (dynamic range / 2), generally do not so good.The dynamic range of each module optical transceiver and light, with optical fiber concrete can allow attenuation how much depends on the actual situation.Generally allow the attenuation of about 15 to 30 db.

Some specifications can only two parameters, luminous power and transmission distance sometimes shows how much per km optical fiber attenuation calculate the transmission distance, mostly is 0.5 db/km.With minimum transmission distance divided by 0.5, which is able to receive the maximum light power, if the receiving optical power is higher than the value, optical transceiver may be burned.With maximum transmission distance is divided by 0.5, that is, sensitivity, if received light power is lower than this value, the link may be blocked.

 

Visual Fault Locator DS350

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The fourth generation by the free electron laser source

发表于 2016 年 01 月 08 日 由 jilongen

In the field of contemporary science and technology, with high brightness, advanced short pulse, tunable laser source of demand, the more to more.Advanced laser source, the new material, life science, new drug research and development in the areas of research is indispensable.In Italy, the stern (Trieste) synchronous laser accelerator (Sincrotrone) provided by the short pulse synchronization source, high brightness, detailed studies available in atomic and molecular level the surface of the material structure and the internal behavior, is the electronic science, environmental protection, drug development, medical diagnosis, engineering technology and nanotechnology research and development of effective tools.Sincrotrone Trieste, there are two laser: Elettra and Fermi.Elettra is the third generation of synchronous laser, has been in operation for many years.Fermi for the fourth generation of free electron laser, in December 2010, the light, then entered the stage of user authentication and test.In 2010, set up jointly by the European commission and the European investment bank risk sharing financial plan (RSFF) invested 20 million euros, for FERMI terminal stage of user validation research started.Fermi has been put into operation recently.Fourth generation light source Fermi is so far the world’s most advanced free electron source, for the study of the scientific research personnel on a microscopic level material chemical and physical phenomena and their interaction provides a useful tool.Trieste the fourth generation of light source is open to public and private research institutions around the world, is an important foundation of the European research area construction engineering research facilities.RSFF is jointly set up the commission and the European investment bank, a policy of financial instruments.Provide support for large technology infrastructure is one of the important tasks of RSFF.

 

Visual Fault Locator DS350

 

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Using method of optical power meter panel

发表于 2015 年 12 月 11 日 由 jilongen

Using optical power meter first need to have several conditions: a glowing light source (light source device mouth or transmitted light light path);Test fiber (must be connected to the light source and optical power meter connector, connector does not match the words need to the corresponding converter);Droop (if a high optical power);Optical power meter (electricity).

In uncertain light power (high), first the droop in light or optical power meter, one end.Then light source and optical power meter with a fibre-optic link, and open the optical power meter, press “enter” symbol, adjust the corresponding wavelength shows the value plus droop is light power, if measured optical power is not high, suggested that the droop take next to test again.In the optical fiber system, optical power measurement is the most basic, much like the multimeter electronics;In the optical fiber measurement, optical power meter is a commonly used table heavy load.By measuring the transmitting terminal machine or the absolute power of the optical network, an optical power meter can evaluate the performance of the light end equipment.Combinations of light power meter and stability of light source, is able to measure the connection loss, continuity test, and help to evaluate quality of fiber optic link transmission.

 

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The usage of the optical power meter

发表于 2015 年 12 月 02 日 由 jilongen

Before this test fiber to the wavelength of the optical power meter is set to 1310 nm.At the end of new stations on cloth fiber, is generally in the cable core (blue and orange) 1 and 2.To the railway station of the upper stand (transmission) ouija board and cloth with 1 and 2 of the new sites to the corresponding optical cable core (blue and orange).Said, check to see if the light receiving light put out the flame to receive new stations sending a signal, it is two fiber optic fiber inserted against or not! Optical power meter test new stations launched light signal strength. General normal between -8 to -28, in – 28 if time is the data but also can do! If the value of the test process is not in the normal range, to use the device’s own attenuator (each increased to -5db), put the attenuator equipment on board the optical receiver mouth! To the railway station on the light signal from the test to launch endsystems on whether in normal range, ensure the between -8 to -28 and ensure the lights go out! Notice the light path room check light path and do light path data!

 

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Deep ultraviolet related dynamic of solid state laser source

发表于 2015 年 11 月 25 日 由 jilongen

Practical application of deep uv solid-state laser source equipment, access to less than 200 nanometres deep ultraviolet band, rely mainly on synchrotron radiation and incoherent light sources such as gas discharge.Though these light source has the advantage of short wavelength and band width, but expensive equipment, and the low energy resolution, the photon flux is small, low density is insufficient, can’t meet the need of deep ultraviolet frontier science equipment.

“Some of the synchrotron radiation equipment, cost nearly one hundred million yuan, the volume is very big also, practicality is poorer; deep uv solid-state laser not only greatly reduces the equipment cost, and better performance.”Xu Zuyan said.After more than three years of efforts, our scientists in the world for the first time successfully developed 8 sets of practical equipment, motors of deep uv solid-state laser sources.

It is 8 science instruments: deep ultraviolet laser Raman spectrometer, ultraviolet laser photochemical reaction, deep ultraviolet laser light emitting electron microscope, deep deep ultraviolet laser photoluminescence spectrometer, ultraviolet laser the spin Angle resolutions photoelectron spectrometer, photon energy adjustable deep ultraviolet photoelectron spectrometer, deep ultraviolet laser in situ electron spectrometer as well as the spatial and temporal resolution tunnel based on flight time energy analyzer of deep uv laser angular resolution photoelectron spectrometer.

 

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Fault diagnosis method of optical fiber fusion splicer

发表于 2015 年 11 月 19 日 由 jilongen

Optical fiber fusion splicer after long time use will inevitably there are some problems, some time is fatal breakdown of the machine, such as damage to the internal parts, this time need to return to factory maintenance, but most of the time are some simple fault, the users themselves can be resolved, as welding machine users to their own machine maintenance and judge and solve simple problems is very important.

Optical fiber fusion splicer is a precision instrument can be divided into hardware, software, and supplies to understand. At the same time, we can also likened to a gun to explain the role of each component.

I. as part of the hardware, V groove is the barrel of a gun, if not in a straight line, playing out of bullets to crooked, fiber and are not allowed to; fiber presser foot is sight, problem cannot be fixed optical fiber.

II. as part of the software, the light path of the optical fiber observing is like our eyes, not clearly could not finish the control core, and the firmware of  the interior of the machine is like our minds to often make it in the new state.

III. as part of the supplies, welding machine is only electrode bar, this is like a bullet, if appear to bomb bad, the serious results can be imagined.

So we in the use and maintenance of welding machine, you need to use above methods to treat machine, which is particularly important, we often in the television see liberation army before going to wipe gun, that is because to prevent war gun jammed, the same melting machine inside also can not be accumulated dust and garbage, we after the completion of daily work must be the welding machine to clean up and then put into carrying box, otherwise waste accumulate over a long period of time will eventually lead to welding machine failure.

 

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Analysis of the advantages of fiber cleaver

发表于 2015 年 11 月 11 日 由 jilongen

Laser cutting machine as a new technology means in recent years, the high energy density of laser beam irradiation to the workpiece, so that local heat melting. Then the high-pressure gas to blow slag forming slit, with respect to the early laser cutting machine, fiber cleaver has these advantages:

1. The ideal beam quality of fiber is improved greatly.

2, the photoelectric conversion efficiency of the fiber laser is higher than 25%, the power consumption is small, the volume is small, and the area is small.

3, through the optical fiber transmission to the laser focusing head, flexible connection and easy to realize automation of production line matching.

4, fiber laser of high stability and long pump diode life determines the do not like the traditional lamp pumped laser as necessary current adjustment to adapt to the xenon lamp aging, greatly improves the production stability and product consistency.

5, compact structure, high system integration, low failure, simple and easy to use, without the need for optical adjustment, low maintenance and even zero maintenance, the real do a “born out of light”, coupled with anti shock vibration, anti dust, really suitable for industrial processing applications.

 

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