ATM photonic switching systems with Tera-bits/sec throughput

1995 Fiscal Year Final Research Report Summary

• Project/Area Number: 06452245
• Research Category: Grant-in-Aid for General Scientific Research (B)
• Allocation Type: Single-year Grants
• Research Field: 情報通信工学
• Research Institution: Sophia University
• Principal Investigator: OZEKI Takeshi Sophia Univ., Science & Technology, Professor, 理工学部, 教授 (40245791)
• Co-Investigator(Kenkyū-buntansha): KUDO Tetuhiko Sophia University, Science & Technology, Assistant, 理工学部, 助手 (30053713)
• Project Period (FY): 1994 – 1995
• Keywords: photonics / ATM / switching / Optical Amplifier / Cell Buffer Memory / Cell Loss / Optical Circuit Synthesis / OIC

Research Abstract

Photonic ATM switching systems should be in service at the beginning of the 21st century. For this target, photonic AMC is believed as the most reasonable approach, which is a kind of connector to realize a huge scale of ATM switching system by combinig AHM (ATM Virtual Circuit Handling Module). Our proposal of Multi-fold OFDM Self-Routing ATM Switching System is promising for photnic AMC.[1, 2] One of the important issue in realizing photonic AMC is how to realize photnic ATM cell buffer memory. In this project, one chip photonic ATM cell buffer memory is proposed and demonstrated in a mock discrete model[3].
The basic structure of one chip cell buffer is based on PLC hybrid integration module including a photonic loop, WDM DEMUX and wavelength converters. An AWG DEMUX on PLC and three sets of wavelength converters using 2.5 Gb/s DFB/APD tranciever modules were combined to the mock discrete model of cell buffer, which demonstrated three WDM ATM cells storage at bit rate of 150 Mb/s. Tunable Laser Source HP8168B was used for input photonic ATM cell generation. We also analyzed Multihop Photonic AMC to propose Mach-Zenhder Lattice optical circuits for wavelength routers, which is improved in passband characteristics than AWG routers[5].