Patent
Optical communication line
Haruo Sakaguchi,Takaya Yamamoto +1 more
TLDR
In this paper, the authors proposed to realize the optical communication line of a wide transmission band width substantially equal to that of a single mode fiber by using the mode filter of the simple construction.Abstract:
PURPOSE:To realize the optical communication line of a wide transmission band width substantially equal to that of a single mode fiber by using the mode filter of the simple construction. CONSTITUTION:When the value of the standardized frequency V of a linear multimode optical fiber is larger than 2.4, the effect of confinement of the basic mode into the core is large and the intensity of the basic mode at the boundary of the core and clad becomes weak. Hence, it becomes difficult to receive the effect of disturbances at the boundary of the core and clad and the losses become smaller as against various bendings occuring in cabling and laying. Hence, the single mode is substantially made possible by adding a mode filter 4 function near the receiving end of an optical fiber 5.read more
Citations
More filters
Patent
Optical resonant cavity filters
TL;DR: In this article, the authors describe a wavelength filtering device and system in which an optical resonant cavity is laterally coupled to a trunk waveguide carrying a broad range of wavelengths in the optical spectrum.
Patent
Data rate limiter for optical transmission system
TL;DR: In this paper, a single-mode transmission optical fiber may have a bandwidth much greater than that necessary to transmit a desired predetermined maximum data rate, and it may be connected to a band-width limiting device (14, 14ʹ) comprising the serial combination of an input optical fiber (16,16ʹ), a mode converter (18,18ʹ,22) and multimode fiber (20,20ʹ).
Patent
Optical fiber distribution network including non-destructive taps and method of using same
Bruce D. Campbell,Joseph Zucker +1 more
TL;DR: In this paper, non-destructive read taps are disposed in series which create extremely small attenuations of an optical signal being tapped, and which increase the bandwidth of the optical fiber being tapped.
Patent
Multiclad optical fiber, optical fiber module, fiber laser, and fiber amplifier
TL;DR: In this article, a multiclad optical fiber comprised of a core which guides the wave of a signal light and has an average refractive index (n1); and a clad composed of an inner clad which is formed on the periphery of the core and has a similar average this article.
Patent
Large-mode-area, multimode, hybrid optical fibers and devices using same
TL;DR: In this paper, a large mode area optical fiber is configured to support multiple transverse modes of signal radiation within its core region, and two axial segments are adiabatically coupled to one another.