Tuesday, 20 September, 2011
14:30 -- 16:15
Room A

Tu.5.A • DSP Algorithm II And Flexible Transponders

Chair: Mario Martinelli; Politecnico di Milano, Italy
Tu.5.A.1 • 14:30
Highly-Sensitive Coherent Optical Detection of M-ary Frequency-Shift Keying Signal
Kazuro Kikuchi1, Masayuki Osaki1; 1University of Tokyo, Japan.
We demonstrate 256-ary frequency-shift keying modulation with digital coherent detection, aiming at applications to space communications. The receiver sensitivity as high as 3.5 photons per bit is obtained at the bit-error rate of 10-3.
Tu.5.A.2 • 14:45
Full-Field Detection Based Multi-Chip MLSE for Offset-DQPSK Modulation Format
Jian Zhao1, Andrew Ellis1; 1Photonic Systems Group, Tyndall National Institute, Ireland.
We propose full-field detection based multi-chip MLSE to improve the receiver sensitivity, CD tolerance, and flexibility of the AMZI delay of the offset-DQPSK format, while retaining the simplicity of its pre-coder and single-AMZI demodulator.
Tu.5.A.3 • 15:00
Digital Predistortion of 75-110GHz W-Band Frequency Multiplier for Fiber Wireless Short Range Access Systems
Ying Zhao1,2, Xiaodan Pang2, Lei Deng3,2, Xianbin Yu2, Xiaoping Zheng1, Hanyi Zhang1, Idelfonso Tafur Monroy2; 1Department of Electronic Engineering, Tsinghua National Laboratory for Information Science and Technology, Tsinghua University, China; 2Photonics Engineering, Technical university of Denmark, Denmark; 3School of Optoelectronics Science and Engineering, HuaZhong University of Science and Technology, China.
We present a digital predistortion technique to effectively compensate high nonlinearity of a sextuple multiplier operating at 99.6GHz. An 18.9dB adjacent-channel power ratio (ACPR) improvement is guaranteed and a W-band fiber-wireless system is experimentally investigated.
Tu.5.A.4 • 15:15 (Invited)
Experimental Demonstration of 400 Gb/s Multi-flow, Multi-rate, Multi-reach Optical Transmitter for Efficient Elastic Spectral Routing
Hidehiko Takara1, Takashi Goh2, Kohki Shibahara1, Kazushige Yonenaga1, Shingo Kawai1, Masahiko Jinno1; 1NTT Network Innovation Laboratories, NTT, Japan; 2NTT Photonics Laboratories, NTT Corporation, Japan.
We demonstrate a multi-flow/multi-rate/multi-reach optical transmitter and spectral routing of total 400 Gb/s optical flows. The number of optical flows, bit rate, and optical reach can be adjusted to enable efficient elastic spectral routing.
Tu.5.A.5 • 15:45 (Invited)
Programmable Modulation for High-Capacity Networks
Michael Eiselt1, Brian Teipen1, Klaus Grobe2, Achim Autenrieth2, Jörg-Peter Elbers2; 1ADVA AG Optical Networking, Germany; 2ADVA AG Optical Networking, Germany.
Adaptation of the signal bandwidth or the data rate to the channel reach in optical networks is discussed. Network improvement is considered, and an implementation option is presented.