An optical attenuator can be a device familiar with lower the power of the optical signal, in a choice of free space possibly in an optical fiber. The normal types of optical attenuators are fixed, step-wise variable, and continuously variable. A fiber optic attenuator, also referred to as an optical attenuator, simulates the loss which might be the consequence of a long amount of fiber. A very important sign of a fantastic fiber attenuator is simply because probably should not reflect light, instead, they will absorb extra light without having to be damaged. For the reason that light power employed in fiber optic communications are fairly low, many of them are usually absorbed without noticeable injury to the attenuator itself.

Fiber-optic attenuator applications

Attenuators are usually used in fiber optic communications, with the idea to test electricity margins by temporarily adding a calibrated level of signal loss, or installed permanently to correctly match transmitter and receiver levels. Sharp bends stress optic fibers and will cause losses. If a received signal is just too strong a brief fix is usually to wrap the cable around a pencil till the desired a higher level attenuation is achieved. However, such arrangements are unreliable, because the stressed fiber has a tendency to break after some time.

Built-in variable fiber-optic attenuators

Built-in variable optical attenuator could be either manually or electrically controlled. A manual system is a good choice for one-time put in place of your system, as well as being a near-equivalent to some fixed attenuator, and will be called an "adjustable attenuator". When compared, an electrically controlled attenuator will offer adaptive power optimization. Features of merit for electrically controlled devices, include speed of response and avoiding degradation on the transmitted signal. Dynamic range is frequently quite restricted, and power feedback may signify long lasting stability is usually a relatively minor issue. Speed of solution is an exceptionally significant problem in dynamically reconfigurable systems, where the delay of one millionth associated with a second can result in the loss of considerable amounts of transmitted data. Typical technologies useful for fast response include LCD, or Lithium niobate devices. There's a class of built-in attenuators that is technically indistinguishable from test attenuators, except they're just packaged for rack mounting, and get no test display.

Variable fiber-optic attenuators

The variable fiber optic attenuator generally works on the variable neutral density filter. Despite relatively serious price, this arrangement has got the advantages of being stable, wavelength insensitive, mode insensitive, and offering a substantial dynamic range. Other schemes just like LCD, variable air gap etc. happen to be tried over time, nevertheless with limited success. They usually are either manually or motor controlled. Motor control give regular users a definite productivity advantage, since very popular test sequences is usually run automatically. Attenuator instrument calibration is known as a serious problem. The person typically want a definite port to port calibration. Also, calibration should usually go to various wavelengths and power levels, since the set up is not necessarily linear. However numerous instruments tend not to in actual fact offer these basic features, presumably in an attempt to reduce cost. Probably the most accurate variable attenuator instruments have thousands of calibration points, causing excellent overall accuracy in use.

Optical variable attenuator is a double window (1310/1550nm) of passive components. The variable optical attenuator voa could continually and variably attenuate the light intensity inside optical fiber transmission. Variable fiber optic attenuator can help you simulate distance or actual attenuation in the fiber optic testing work by inserting a calibrated attenuation to the link. Using the variable fiber optic attenuator, technicians could verify the capability margin received by testing the fiber optic link power budget. Variable fiber attenuator can help user vary the sunshine power injected by a light source in to the optical fiber. Important parameter of variable fiber attenuator include its insertion loss, reflection loss and attenuation range. We feature ST, FC, SC, LC variable optical attenuator price that is definitely below others with APC, UPC type. Attenuation range available originates from 1dB to 30dB.

An optical attenuator is a device used to reduce the power level of an optical signal, either in free space or in an optical fiber. Fiber optic attenuator is an optical attenuator used in the fiber optic communications to reduce the optical fiber power at a certain level. The most commonly used type is female to male plug type fiber optic attenuator. It has the fiber connector at one side and the other side is a female type fiber optic adapter, with fiber optic attenuator name based on the connector type and the attenuation level. FiberStore supply Fiber Optic Attenuator FC, SC/APC, ST, PC, LC, UPC, MU, FC/APC, SC, LC/APC, fixed value plug type fiber optic attenuators with different attenuation level, from 1dB to 30dB. You can buy fiber optic connection products on our store with your confidence. All of fiber optics supplies with high quality but low price.

Here I have listed two examples:
(1)LC Fiber Optic Attenuator
LC fiber optic attenuators are UPC and APC types, to fit for the according LC connectors. LC UPC fiber optic attenuator return loss is more than 55dB, LC APC fiber optic attenuator return loss is more than 65dB. Working range of the LC fiber attenuator is 1240nm to 1620nm, including the typical 1310nm and 1550nm single mode applications. They are constructed of the highest quality materials and every piece is tested during production. The LC fiber optic attenuator is used with fiber amplifier, DWDM and telecommunications equipment. We supply single mode LC/APC, LC/UPC fiber optic attenuators including the bulkhead (Flange type) LC attenuator and female to male LC fiber attenuator. Attenuation range available is from 1dB to 30dB.

(2)Variable Attenuator
Optical variable attenuator is a double window (1310/1550nm) of passive components. The variable optical attenuator could continually and variably attenuate the light intensity in the optical fiber transmission. Variable fiber optic attenuator could help simulate distance or actual attenuation in the fiber optic testing work by inserting a calibrated attenuation into the link. By using the variable fiber optic attenuator, technicians could verify the power margin received by testing the fiber optic link power budget. Variable fiber attenuator can help user vary the light power injected from a light source into the optical fiber. Important parameter of variable fiber attenuator include its insertion loss, reflection loss and attenuation range. We supply ST, FC, SC, LC variable fiber optic attenuators with APC, UPC type. Attenuation range available is from 1dB to 30dB. Variable Fiber Optic Test Attenuators generally use a variable neutral density filter. Despite relatively high cost, this arrangement has the advantages of being stable, wavelength insensitive, mode insensitive, and offering a large dynamic range. Other schemes such as LCD, variable air gap etc. have been tried over the years, but with limited success.