Patent ID: 9250452
Filing Date: 2016-02-02
CPC Classification: G02B,G02F,H04B

Claim Text:
1. A photonic RF circulator comprising: an Electro Optic Modulator; wherein the Electro Optic Modulator comprises at least one optical waveguide with an optical grating disposed thereon; the optical grating having a first end and a second end; at least one pair of RF electrodes in electro-optic communication with the at least one optical waveguide; wherein the pair of RF electrodes are adapted to receive an RF Receive signal at a first end of the RF electrodes and an RF Transmit signal at a second end of the RF electrodes; wherein the first end of the optical grating is coincident with the first end of the RF electrode and the second end of the optical grating is coincident with the second end of the RF electrode; at least one laser light source transmitting laser light into the Electro Optic Modulator at the first end of the optical grating; at least one photodetector generating an electrical signal from the laser light received from the Electro-Optic Modulator wherein the optical grating is adapted to have a notch in a link gain of the RF Transmit signal more than 40 dB less than a link gain of the RF Receive signal.