Optical waveguides – With optical coupler – Particular coupling function
Patent
1997-08-28
1999-10-26
Palmer, Phan T. H.
Optical waveguides
With optical coupler
Particular coupling function
385147, 385 12, 372 6, 359127, G02B 600
Patent
active
059742089
ABSTRACT:
The present invention relates to a sliding-frequency guiding filter which is capable of guiding soliton pulses to hundreds of different resonant frequencies by designing the device so that the filter can automatically offset its peak resonant frequency from the frequency of incoming soliton pulses. The sliding-frequency guiding filter comprises the followings: a coupler to tap some of incoming soliton signals; a wafer whose one half is coated by multilayered dielectric on both sides while leaving the other half uncoated, where the soliton signals tapped through the coupler is directed to coated half and uncoated half of the wafer, respectively; and, a thermoelectric cooler attached to the coated side of the wafer. The sliding-frequency guiding filter, made of the same design, can be applied throughout the soliton transmission line instead of the numerous filters all operating at different resonant frequencies. Accordingly, the sliding-frequency guiding filter can be practically used in ultralong distance soliton transmission system.
REFERENCES:
patent: 5463489 (1995-10-01), Mamyshev et al.
patent: 5557441 (1996-09-01), Mollenauer
Chung Yun-Chur
Jang Jin-Hwan
Kim Hoon
Korea Advanced Institute of Science and Technology
Palmer Phan T. H.
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