A COHERENT PHOTONIC WAVELENGTH-DIVISION SWITCHING-SYSTEM FOR BROAD-BAND NETWORKS

被引:5
|
作者
FUJIWARA, M [1 ]
SHIMOSAKA, N [1 ]
NISHIO, M [1 ]
SUZUKI, S [1 ]
YAMAZAKI, S [1 ]
MURATA, S [1 ]
KAEDE, K [1 ]
机构
[1] NEC CORP LTD,C & C SYST RES LABS,KAWASAKI,KANAGAWA 213,JAPAN
关键词
D O I
10.1109/50.50738
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A coherent photonic wavelength-division (WD) switching system, utilizing a coherent wavelength switch (λ switch), is proposed. In the proposed coherent λ switch, the tunable wavelength filter function is accomplished using coherent optical detection with a wavelength tunable local oscillator. The coherent photonic WD switching system has the following features; 1) low crosstalk switching for dense WDM signal, and 2) large line capacity capability. Design considerations show that 32 wavelength division channels can be available with a coherent λ switch. It is also shown that a broad-band metropolitan-area-net-work with over 1000 line capacity is possible, using a multistage connection in the coherent λ switches. The switching function of the coherent λ switch is demonstrated in a two-channel wavelength-synchronized switching experiment, using 8-GHz-spaced, 280-Mbit/s optical FSK signals. © 1990 IEEE
引用
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页码:416 / 422
页数:7
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