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Quasi-light Storage for Optical Data Packets

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Hybrid optoelectronic buffer using CMOS memory and optical interfaces for 10-Gbit/s asynchronous variable-length

Tatsushi Nakahara¹, Hirokazu Takenouchi, Ryohei Urata

¹NTT Photonics Laboratories, NTT Corporation, 3-1 Morinosato Wakamiya, Atsugi, Kanagawa Prefecture, 243-0198, Japan. nak@aecl.ntt.co.jp

|October 14, 2010

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This study introduces a hybrid optoelectronic buffer with CMOS memory and optical interfaces for high-speed optical packet processing. It demonstrates error-free data handling for 10-Gbit/s asynchronous optical packets.

Area of Science:

Optoelectronics
Computer Engineering
Data Storage

Background:

High-speed optical networks require efficient data buffering and processing.
Existing solutions often face limitations in handling asynchronous, variable-length optical packets.

Purpose of the Study:

To develop a hybrid optoelectronic buffer integrating CMOS memory with optical interface devices.
To enable flexible and functional processing of preamble-free, asynchronous optical packets.

Main Methods:

Integration of complementary metal-oxide-semiconductor (CMOS) memory with optical/optoelectronic interface devices.
Development of an all-optical serial-to-parallel converter (SPC), electrical-to-optical parallel-to-serial converter (PSC), and optical clock pulse-train generator (OCPTG).
Implementation of a prototype using a field-programmable gate array (FPGA)-based memory.

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Main Results:

Demonstration of write-in/read-out of preamble-free asynchronous optical packets to/from CMOS memory.
Successful error-free operation for 10-Gbit/s asynchronous variable-length optical packets.
Enabled flexible packet processing using CMOS circuitry.

Conclusions:

The hybrid optoelectronic buffer offers a viable solution for high-speed optical packet handling.
The developed interface devices facilitate seamless integration of optical data with CMOS processing.
This technology supports advanced functionalities for future optical communication systems.