Fiber Optic Attenuator Calculator

This fiber loss calculator can estimate the total fiber link loss through a particular fiber optic link if the fiber length the number of splices and number of connectors are known. As with any system you need to set criteria for performance and then determine how to meet those criteria. Fiber loss depends heavily on the operating wavelength.

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The att inl ext is coupled between two sma terminated fiber optic cables whereas the att da can be connected directly to the light source.

Fiber optic attenuator calculator.

It s important to remember that we are talking about a system that is the sum of its parts. Practical fibers have the lowest loss at 1550 nm and the highest loss at 780 nm with all physical fiber sizes for example 9 125 or 62 5. An optical attenuator or fiber optic attenuator is a device used to reduce the power level of an optical signal either in free space or in an optical fiber the basic types of optical attenuators are fixed step wise variable and continuously variable. This calculation is simply the sum of all worst case loss variables in the link.

The attenuation coefficient of fiber can be 0 36db km in wavelength of 1310nm as well as 0 22db km in wavelength of 1550nm. In a huge amount the distance of relay can be decided within the optical transmission. Use this handy tool to calculate the loss budget for your next project. Calculating fiber optic loss budget criteria calculation factors design of a fiber optic system is a balancing act.

The loss budget is the sum of the average losses of all the components including fiber optic attenuation connector loss and splice loss. The sc fiber optic attenuators work in the 1250nm to 1625nm range with attenuation range from 1db to 30db optional. Sc fiber optic attenuator or sc apc fiber optic attenuator we supply single mode sc fiber optic attenuators they are available by bulk headed type or plug female to male type. The attenuation coefficient of foc fiber optic cable is one of the most significant parameters.

The different size fibers have different optical loss db km values. The attenuation can be set from 0 100 and can be fixed with a set screw. We stock most values between 1db and 25db for each of these attenuator types. For example single mode fiber uses 9 125 um and multimode uses 62 5 125 or 50 125.

Although fiber optic attenuators are normally used in singlemode circuits because this is where the stronger lasers are used for distance transmission we also have multimode attenuators available upon special order in 50 125 and 62 5 125 fiber sizes. Both devices consist of two uv vis nir collimating lenses mounted on either side of an adjustable iris.