Abstract:
PROBLEM TO BE SOLVED: To provide an optical mode noise averaging device (300) that includes a multi-mode optical fiber (302), and a means (308) for averaging variations of signal level in an optical level of an optical signal. SOLUTION: The device averages the variations of the signal level induced by mode noise by periodically changing a refractive index of the multi-mode optical fiber (302) for a selected period or scrambling optical distribution in the multi-mode optical fiber (302), or by both of them. The refractive index of the multi mode optical fiber is periodically changed by periodically changing temperature of the multi-mode optical fiber (302). Alternatively, cyclically manipulation of the multi-mode optical fiber (302) enables the refractive index to be changed, or enables the optical distribution in the multi-mode optical fiber to be scrambled. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
An optical mode noise averaging device (300) including a multimode optical fiber (302) and means (308) for averaging a modal noise induced signal level variation of light propagating within the multimode optical fiber (302). The device may average modal noise induced signal level variations by cyclically varying an index of refraction of the multimode optical fiber (302) over a select period of time, scrambling a light distribution within the multimode optical fiber (302), or both. The index of refraction of the multimode optical fiber may be cyclically varied by cyclically varying the temperature of the multimode optical fiber (302). Alternatively, the index for refraction may be varied or the light distribution within the multimode optical fiber may be scrambled by cyclically manipulating the multimode optical fiber (302).
Abstract:
An optical mode noise averaging device (300) including a multimode optical fiber (302) and means (308) for averaging a modal noise induced signal level variation of light propagating within the multimode optical fiber (302). The device may average modal noise induced signal level variations by cyclically varying an index of refraction of the multimode optical fiber (302) over a select period of time, scrambling a light distribution within the multimode optical fiber (302), or both. The index of refraction of the multimode optical fiber may be cyclically varied by cyclically varying the temperature of the multimode optical fiber (302). Alternatively, the index for refraction may be varied or the light distribution within the multimode optical fiber may be scrambled by cyclically manipulating the multimode optical fiber (302).
Abstract:
An optical mode noise averaging device (300) including a multimode optical fiber (302) and means (308) for averaging a modal noise induced signal level variation of light propagating within the multimode optical fiber (302). The device may average modal noise induced signal level variations by cyclically varying an index of refraction of the multimode optical fiber (302) over a select period of time, scrambling a light distribution within the multimode optical fiber (302), or both. The index of refraction of the multimode optic al fiber may be cyclically varied by cyclically varying the temperature of the multimode optical fiber (302). Alternatively, the index for refraction may b e varied or the light distribution within the multimode optical fiber may be scrambled by cyclically manipulating the multimode optical fiber (302).