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L band (infrared)

Fibre-optic telecommunications

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Absorption in fiber in the range 900–1700 nm

In infrared optical communications, L-band refers to the wavelength range 1565–1625 nm.[1] The L-band is located next to the conventional (C) band (1530–1565 nm).

Infrared astronomy

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Atmospheric windows in the infrared. The L band is the transmission window centred on 3.5 micrometres

In infrared astronomy, the L band is an atmospheric transmission window centred on 3.5 micrometres (in the mid-infrared).[citation needed]

References

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  1. ^ Optical Fiber Communications article in rp-photonics' Encyclopedia of Laser Physics and Technology (accessed Nov. 11 2010)
 

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