It s important to remember that we are talking about a system that is the sum of its parts.
Fiber optic attenuator calculator.
Both devices consist of two uv vis nir collimating lenses mounted on either side of an adjustable iris.
The different size fibers have different optical loss db km values.
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.
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.
The attenuation coefficient of fiber can be 0 36db km in wavelength of 1310nm as well as 0 22db km in wavelength of 1550nm.
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.
The sc fiber optic attenuators work in the 1250nm to 1625nm range with attenuation range from 1db to 30db optional.
The loss budget is the sum of the average losses of all the components including fiber optic attenuation connector loss and splice loss.
As with any system you need to set criteria for performance and then determine how to meet those criteria.
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.
The attenuation can be set from 0 100 and can be fixed with a set screw.
Fiber loss depends heavily on the operating wavelength.
In a huge amount the distance of relay can be decided within the optical transmission.
The attenuation coefficient of foc fiber optic cable is one of the most significant parameters.
Calculating fiber optic loss budget criteria calculation factors design of a fiber optic system is a balancing act.
We stock most values between 1db and 25db for each of these attenuator types.
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.
