Design and Evaluation of 10 Gbps Optical Access System Using Optical Switches

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概要

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• We propose an optical switch control procedure for the Active Optical Access System (AOAS). Optical switches are used in AOAS instead of optical splitters in PON. In the proposed procedure, an OLT determines the switching schedules of optical switches on OSW (Optical Switching Unit) which is installed between OLT and ONU, and informs the OSW of them with a switch control frame preceding of data frame transmission. Then the switch controller on OSW controls the optical switches based on the switching schedules. We developed the prototype systems of OSW, OLT, and ONU. We implemented the optical switch control function with logic circuits on the prototype systems. We demonstrate the proposed procedure works effectively with logic circuits. We also evaluate the 10Gps optical signal transmission between OLT and ONU. We demonstrate the receiver sensibility on OLT and ONU achieves the distance of 40km for optical signals transmission with FEC (Forward Error Correction). These receivers are applicable for both AOAS and 10G-EPON.

著者

• WAKAYAMA Koji

  Central Research Laboratory, Hitachi Ltd.

• OKUNO Michitaka

  Central Research Laboratory, Hitachi Ltd.

• SUGAWA Jun

  Central Research Laboratory, Hitachi Ltd.

• MASHIMO Daisuke

  Central Research Laboratory, Hitachi Ltd.

• IKEDA Hiroki

  Central Research Laboratory, Hitachi Ltd.

• SAKAMOTO Kenichi

  Central Research Laboratory, Hitachi Ltd.

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