Optical waveguides – Directional optical modulation within an optical waveguide – Electro-optic
Reexamination Certificate
2007-06-05
2007-06-05
Font, Frank G. (Department: 2883)
Optical waveguides
Directional optical modulation within an optical waveguide
Electro-optic
C385S002000, C385S008000, C385S009000, C385S014000, C385S088000, C385S089000, C385S092000, C359S245000, C359S248000, C359S249000, C359S199200, C359S199200
Reexamination Certificate
active
10799051
ABSTRACT:
An electro-optical modulator is disclosed that has a microwave input, chip with a thin film resistor or a lumped resistor located between an input RF connector and an RF electrode on a Lithium Niobate chip. The accessory connection chip has a broadband attenuator like a thin film resistor which is placed in a microstrip line for effecting the electrical transmission to Lithium Niobate chip. The insertion of the thin film resistor before the RF electrode lowers the electrical return loss value as a function of frequency, allowing a lower driving voltage design or a reduced chip length without degrading the performances.
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EP Search Report, Application No. EP05300174, dated Apr. 26, 2005.
Bonazzoli Mario
Gilardi Giovanni
Gobbi Luigi
Milanese Paolo
Pensa Simone
Avanex Corporation
Chiem Erin
Patterson & Sheridan L.L.P.
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