CUTOFF WAVELENGTH

1. The wavelength corresponding to the cutoff frequency . ( 188 ) 2. In an uncabled single-mode optical fiber , the wavelength greater than which a particular waveguide mode ceases to be a bound mode . ( 188 ) Note 1: The cutoff wavelength is usually taken to be the wavelength at which the normalized frequency is equal to 2.405. Note 2 : The cabled cutoff wavelength is usually considered to be a more functional parameter because it takes into consideration the effects of cabling the fiber.