Patent ID: 9664979
Date: 2017-05-30
CPC Classifications: G02B,G02F

Claim:
1. A method implemented by a modulation block, the method comprising: receiving, by a first optical input port of a first optical modulator, a first optical signal in a first direction; receiving, by the first optical modulator, a first radio frequency (RF) input signal; modulating, by the first optical modulator, the first optical signal using the first RF input signal to generate a first modulated optical signal; transmitting, by a first optical output port of the first optical modulator, the first modulated optical signal in a second direction, wherein an angle between the first direction and the second direction is greater than 135 degrees(°); receiving, by a second optical input port of a second optical modulator at least partially folded within the first optical modulator, a second optical signal in the first direction; receiving, by the second optical modulator, a second RF input signal; modulating, by the second optical modulator, the second optical signal using the second RF input signal to generate a second modulated optical signal; and transmitting, by a second optical output port of the second optical modulator, the second modulated optical signal in the second direction, wherein the first optical input port, the first optical output port, the second optical input port, and the second optical output port are positioned on a face of the modulation block, and wherein partially folded means that the second optical input port, the second optical output port, or both are located between the first optical input port and the first optical output port on the face.