30 January 1997 Photonic ADM in multi wavelength ring networks
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This paper describes a new structure of photonic add/drop multiplexer (ADM), called optical wavelength ADM (OW-ADM), discusses the applications in multi-wavelength optical ring networks and the network characters. This scheme uses optical wavelength as addressing information of data channel and performs all-optical add/drop function at each node by sensing the wavelength, without converting the high-speed data to electronic form. The key components in OW-ADM include wavelength grating router (WGR), optical switch, optical coupler and band reject filter. The thought is based on wavelength sequence selection (WSS) property of WGR. This OW-ADM can avoid the bottlenecks associated with the convention between optical signal and electrical signal and accomplish all-optical transparent transmission. It also has the following good features: (1) all-optical self-healing; (2) dual-function of ADM and protection switching; (3) self- test function; (4) small crosstalk and small wavelength interval; (5) wavelength-reuse capability, etc.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yuefeng Ji, Yunfeng Shen, Wanyi Gu, "Photonic ADM in multi wavelength ring networks", Proc. SPIE 2918, Emerging Components and Technologies for All-Optical Photonic Systems II, (30 January 1997); doi: 10.1117/12.265359; https://doi.org/10.1117/12.265359

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