QED Reference Optical Quartz refoptical0.6
Beskrivelse
Reference Optical Quartz is the first of its kind, consisting of 210 separate boro-silicate glass fibres. The cable allows you to experience stunning sound when connecting DACs, TV’s, CD players and Blu-Ray players to amplifiers or receivers because it has a much higher bandwidth and only 1/10th of the attenuation of traditional acrylic fibres. Reference Optical Quartz vastly exceeds the demands for high definition multi-channel digital audio with a bandwidth of over 150MHz which is totally unaffected by bending the cable.
GLASSCORE TECHNOLOGYQED's new Glasscore™ technology employs multiple fibre bundles of ultra-fine boro-silicate glass optical fibres (GOF) of no more than 50um each to make up the 1mm diameter necessary to conform to the Toslink standard connectors. Because the fibres are so small the different paths taken by the light rays are similar in length virtually eliminating the timing error and introducing less distortion and jitter. This has the effect of increasing bandwidth and the accuracy of the data transmission. STEPPED REFRACTIVE INDEXThe quartz fibres are coated with a cladding of low Refractive Index to guide the light signal. OVER 150MHZ BANDWIDTHThis vastly exceeds the demands for high definition multi-channel HD digital audio. In contrast to conventional acrylic glass optical cables quartz glass cables can deliver signals up to and including 24bit/192kHz with very low jitter . Reference Optical Quartz can provide a much higher bandwidth than a single acrylic glass fibre with 1/10th of the attenuation. |
ULTRA LOW JITTER / ULTRA LOW LOSSQED have calculated that jitter (distortions caused by timing differences between the different light paths) in conventional optical cables could typically reach up to 145ps. In Reference Optical Quartz, timing errors are virtually eliminated, introducing less distortion, jitter and ultra low loss < 0.03 dB/m. SPECIFICATIONSUnique boro-silicate glass construction Highly flexible 210 x 50 micron optical fibre bundle Bandwidth >150MHz Ultra low jitter Stepped refractive index Ultra low loss < 0.03 dB/m |
GLASSCORE™
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up the 1mm diameter necessary to conform to the Toslink standard connectors. |
COMPARING TECHNOLOGIES
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PMMA OPTICAL FIBRESA typical optical fibre is made of an acrylic glass material known as PMMA (Polymethyl-methacrylate). This acrylic core allows the light to take many different length paths through it. Timing differences are introduced – accounting for typically up to 145ps of Jitter.Signal losses also occur when light is incident above the Critical Angle and is not reflected back (Yellow). |
REFERENCE OPTICAL QUARTZReference Optical Quartz has in excess of 210 Glasscore™ fibres each thinner than a human hair. This ensures ultra low jitter because the smaller numerical aperture reduces the range of angles of acceptance leading to straighter signal paths. |
OVERALL PERFORMANCE
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GLASSCORE™ TECHNOLOGYInstead of using traditional low performance polymethyl methacrylate (PMMA) plastic optical fibres (POF) which come as a single 1mm OD fibre the cable incorporates 210+ boro-silcate glass optical fibres (GOF) which give improved jitter performance and higher bandwidth capability. |
ULTRA LOW JITTERJitter is the undesired deviation from true periodicity of an assumed periodic signal in electronics and telecommunications, often in relation to a reference clock source. A cable displaying ultra low jitter has been measured at |
