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Abstract
48-fiber thermoplastic MT ferrule is developed. The fiber hole position error is below 2.5 μm and the insertion loss is below 0.5 dB. The ferrule is cost effective compared with conventional thermosetting ferrule.
This paper describes a unique solution to the next-generation high bit-rate and high channel-density parallel-optical links whereby the size of parallel-optical modules would have to be considerably reduced. Since the main problem concerning the size of optical-to-electrical conversion part is associated with the mounting of the parallel-optical module to the printed-circuit-board (PCB), this paper puts forward a remarkably compact parallel optical-module design that can be soldered directly onto the PCB. That is made possible by the high temperature tolerance of 250 °C required for Sn-Ag-Cu solder-reflow process. The miniature parallel-optical module measures only 10.5 mm in length, 6.5 mm in width, and 1.5 mm in height. The resulting parallel-optical modules are capable of four-channel error-free parallel pseudo-random binary sequence 231-1 transmission at 28 Gb/s without using clock and data recovery as well as feed-forward error correction (FEC); hence, these parallel-optical modules are applicable in next-generation high-density 100 Gb/s Ethernet applications that use FEC.
Optical connectors will be a key element in configuring large-scale optical networks of the future, and the authors have developed super low-loss, super high-density connectors. We have also developed assembly technology based on innovative high-precision molding technology, which eliminates fiber position error as a major factor in connector insertion loss. This has resulted in a striking reduction in insertion loss and remarkably high-density packaging compared with existing connectors. In terms of the reduction in loss, we obtained 0.15 dB (SMF) for an 8-fiber connector, and 0.30 dB (SMF) for a 24-fiber connector. And we were able to integrate 60 fibers within the same dimensions as existing connectors.
This paper presents the development of a multiple row MT connector for 80 μm diameter optical fibers. We conclude that the connector is effective for optical interconnections.
For the first time, we demonstrate 1.1-μm-range 12 channels × 10-Gbit/s error free transmission over 600m optical link consisting of high-density parallel-optical modules employed with an electrical-pluggable interface and a multi-mode fiber optimized at 1.1-μm.