1993
DOI: 10.1143/jjap.32.5411
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Feasibility Study on High Data Transfer Rate of 300 Mbit/s with 8-Beam Laser Diode Array

Abstract: This study aims at achieving a high speed optical disk drive for multimedia storage used in network systems. The feasibility of our target has been confirmed by the following results and techniques. High speed parallel data transfer at 336 Mbit/s in 2/7 run length limited (RLL) code or 300 Mbit/s in 1/7 RLL code has been achieved experimentally with eight beams. Focus offset has been reduced by a multibeam laser diode fabricated in junction down structure and a wide-angle lens system. Tracking error is reduced… Show more

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Cited by 23 publications
(2 citation statements)
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“…Figure 2(a) shows the basic configuration of a conventional optical recording head employing a laser diode array (conventional head). [6][7][8] Multiple beams, which are emitted simultaneously, are optically combined using a collimator lens. Then, multiple optical spots simultaneously form on the optical disk through one objective lens.…”
Section: Introduction Of a Pitch Conversion Devicementioning
confidence: 99%
“…Figure 2(a) shows the basic configuration of a conventional optical recording head employing a laser diode array (conventional head). [6][7][8] Multiple beams, which are emitted simultaneously, are optically combined using a collimator lens. Then, multiple optical spots simultaneously form on the optical disk through one objective lens.…”
Section: Introduction Of a Pitch Conversion Devicementioning
confidence: 99%
“…In order to increase the data transfer rate, different approaches have been proposed such as: focusing the beam from a linear array of laser diodes onto different tracks operated in the far-field [1][2][3][4][5] , and using a linear array of sub-wavelength apertures operated in the near field [6][7][8][9] . Recently, it was proposed the use optical waveguide to achieve reading in the intermediate field [10][11][12][13][14] , and the use of multimode rectangular multi-mode waveguide as an imaging system 13,14 .…”
Section: Introductionmentioning
confidence: 99%