Optical waveguides – With optical coupler – Switch
Reexamination Certificate
2005-10-11
2005-10-11
Connelly-Cushwa, Michelle R. (Department: 2874)
Optical waveguides
With optical coupler
Switch
C385S018000, C385S019000
Reexamination Certificate
active
06954562
ABSTRACT:
A matrix switch of an optical waveguide type which has low transmission loss variations and includes uniform grooves with a deep vertical cross section is provided. A switching part for selecting between a light path extending from an input port of a first set of optical waveguides111-11mto an output port of the first set of optical waveguides111-11mand a light path extending from an input port of the first set of optical waveguides111-11mto an output port of a second set of optical waveguides121-12nis arranged for insertion into a switching groove arranged at each of the intersections of the first set of optical waveguides111-11mand the second set of optical waveguides121-12n. Each of the switching grooves is arranged on an imaginary straight line connecting intersections of the first set of optical waveguides111-11mand the second set of optical waveguides121-12n.
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Izawa Tatsuo
Kurumada Katsuhiko
Okamoto Katsunari
Sato Makoto
Tamamura Toshiaki
Connelly-Cushwa Michelle R.
NTT Electronics Corporation
Sartori Michael A.
Venable LLP
Vivarelli, Jr. Daniel G.
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