In a method and an apparatus for transmitting signals in an optical fiber, an amplitude modulator (1) is provided for amplitude modulating an optical carrier at high speed with signals to be transmitted. A suppressing means is provided to suppress at least part of one of the side bands of ...
The proposed system implements the transmission and multiplexing of ultrasonic electrical signals obtained by means of broadband transducers (up to 1 MHz), using an optical fiber. Optical fibers are made of dielectric materials (silica or plastic) so they are inherently passive to electromagnetic ...
The reflected power during ultrasonic wave propagation in an optical fiber was also measured. The measurements of the ultrasonic wave transmission were performed for single-mode and multi-mode step-index optical fibers. 展开 关键词: ultrasounds transmission of acoustic wave in an optical waveguide ...
Theattenuationoffiber-opticlinkisregardedasthesumof"dc"and"ac".The"dc"attenuationisknownasopticalloss,measuredindB/kmperkilometer."Communication"attenuationdependsonthefrequencyofsignalsthatlightwavescarry.Thehigherthefrequency,thelargertheattenuationandusuallythelow-passfilteringfeature.Thefrequencyisuptoacertainext...
An optical communications network in which optical signals from a transmitter (T) are distributed to receivers (R.sub.i) via an optical waveguide (2) and couplers (C.sub.i) are amplified as they propagate along the waveguide (2). The amp... ...
The technical challenges and application prospects of OAM fibers are discussed at the end. 2. OAM Modes in Regular Solid Optical Fibers Optical fiber is a kind of circularly symmetric waveguide; thus, the electric and magnetic fields of eigenmodes can be expressed in the form of separating ...
Optical fiber sensing is a new sensing technology that uses optical waves as the carrier and optical fibers as the medium to sense and transmit external measurement signals. It provides functions similar to those of the sensory nerve of a human body. Learn More Real...
he optical soliton transmission equation of the nonlinear single-mode optical fibers is derived from the Maxwell equations by common mathenmatical method. Morever, the expression of optical soliton wave is obtained,which is consistent with the results in other references.关键词: Optical soliton commu...
It is also possible to transmit analog signals through fibers; that technology is called radio and microwave over fiber.Telecom Windows Optical fiber communications typically operate in a wavelength region corresponding to one of the following “telecom windows” (or communication bands): The first ...
single-mode fibers to map low-information-rate electrical or optical signals into very-high-rate optical pulse sequences to achieve a random,asynchronous ... JA Salehi,CA Brackett - IEEE International Conference on Communications 被引量: 30发表: 1987年 Broadband interference of received pulse for ...