Thursday, 22 September, 2011
11:15 -- 13:00
Room A

Th.12.A • ROADM'S & Network Switches

Chair: Pietro Bernasconi; Alcatel-Lucent Bell Labs, United States
 
Th.12.A.1 • 11:15 (Invited)
TRENDS IN NEXT-GENERATION ROADM NETWORKS
Sorin Tibuleac1, Mark Filer1; 1ADVA AG Optical Networking, USA.
Recent developments in WSS technologies enable ROADM architectures with increased wavelength routing flexibility and efficient bandwidth allocation for future capacity growth. ROADM-induced transmission impairments, mitigation strategies, and benefits of next-generation ROADMs are presented.
 
Th.12.A.2 • 11:45 (Invited)
POWER DISSIPATION LIMITATIONS TO THE SCALABILITY OF NETWORK ELEMENTS
David Neilson1; 1Bell Labs Alcatel-Lucent, USA.
We discuss the impact of power consumption on routing and switching network elements. Evolution to layered switching and approaches to reduce the power consumption using optical technologies will be discussed.
 
Th.12.A.3 • 12:15
EXPERIMENTAL DEMONSTRATION OF COLOURLESS, DIRECTIONLESS, CONTENTIONLESS ROADM USING 1×43 WSS AND PLC-BASED TRANSPONDER AGGREGATOR FOR 127-GBIT/S DP-QPSK SYSTEM
Yohei Sakamaki1, Takeshi Kawai1, Tetsuro Komukai1, Mitsunori Fukutoku1, Tomoyoshi Kataoka1, Toshio Watanabe2, Yuzo Ishii3; 1NTT Network Innovation Laboratories, Japan; 2NTT Photonics Laboratories, Japan; 3NTT Microsystem Integration Laboratories, Japan.
We demonstrate a colourless, directionless, contentionless ROADM consisting of 1×43 WSSs and PLC-based transponder aggregators. The experimental results show that the introduction of a C/D/C-less function causes no significant penalty for 127-Gbit/s DP-QPSK signal transmission.
 
Th.12.A.4 • 12:30
COMPACT HIERARCHICAL OPTICAL CROSS-CONNECT UTILIZING NEWLY DESIGNED WAVEBAND SELECTIVE SWITCH WITH EXTRA PORTS FOR GROOMING
Ryosuke Hirako1, Kiyo Ishii1, Hiroshi Hasegawa1, Ken-ichi Sato1, Hiroshi Takahashi2, Masayuki Okuno3; 1EECS, Nagoya University, Japan; 2NTT Photonics Laboratories, Japan; 3NTT Electronics, Japan.
We propose a compact hierarchical optical cross-connect architecture with modular growth capability utilizing newly developed waveband selective switches with dedicated waveband drop ports for grooming. 10-degree HOXC prototype systems are developed and their feasibility verified.
 
Th.12.A.5 • 12:45
ENHANCED MULTI-HOP OPERATION USING HYBRID OPTOELECTRONIC ROUTER WITH TTL-BASED SELECTIVE FEC
Tatsushi Nakahara1, Yasumasa Suzaki1, Ryohei Urata1, Toru Segawa1, Hiroshi Ishikawa1, Ryo Takahashi1; 1NTT Photonics Laboratories, NTT Corporation, Japan.
Multi-hop operation is demonstrated with a prototype hybrid optoelectronic router for OPS networks. TTL-based selective buffering with FEC at every N hops expands hop count without the need for 3R regeneration at each node.

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