Optical waveguides – With optical coupler – Plural
Reexamination Certificate
2008-04-08
2008-04-08
Doan, Jennifer (Department: 2874)
Optical waveguides
With optical coupler
Plural
C385S015000
Reexamination Certificate
active
10547601
ABSTRACT:
According to the invention, in add-drop devices of an optical cross-connect device for wavelength multiplex signals, tributary drop signals to be dropped are pre-selected in the drop branch by means of pre-selection elements. Only these signals are amplified, thus reducing the number and/or power of the optical amplifiers. The tributary drop signals are individually selected by means of drop routing elements and adjustable filters. The add branch is created correspondingly.
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Michael Vasilyev, Ioannis Tomkos, June-Koo Rhee, Manjusha Mehendale, Bradley S. Hallock, Brian K. Szalabofka, Martin Williams, Sergio Tsuda and Manish Sharma, “Broadcast and Select OADM in 80×10.7 Gb/s Ultra-Longhaul Network”, IEEE Photonics Technology Letters, vol. 15, No. 2, Feb. 2003, pp. 332-334, XP002280039.
Eugenio Iannone and Roberto Sabella, “Optical Path Technologies: A Comparison Among Different Cross-Connect Architectures”, Journal of Lightwave Technology, vol. 14, No. 10. Oct. 1996, pp. 2184-2196.
Eberlein Jörg
Eder Christian
Richter Alexander
Schimpe Robert
Bell Boyd & Lloyd LLP
Doan Jennifer
Siemens Aktiengesellschaft
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