Electro-optic modulator termination

摘要

Embodiments presented in this disclosure generally relate to an electro-optic device that includes one or more modulator portions and a terminator portion. Each modulator portion is disposed along a propagation path of an optical signal and includes a respective first doped region and one or more coupled first electrical contacts. Each modulator portion operates to modulate an optical signal propagating through the first doped region using first electrical signals applied to the electrical contacts. The terminator portion is disposed along the propagation path and proximate to at least one modulator portions, and operates to mitigate effects of droop on the propagating optical signal.

主权项

1. An electro-optic device for modulating an optical signal propagating along a propagation path, the electro-optic device comprising:
a first modulator portion disposed along the propagation path, the first modulator portion comprising:
a first doped region that is at least partially included within the propagation path, andone or more first electrical contacts coupled with the first doped region,wherein the first modulator portion is configured to modulate the optical signal propagating through the first doped region using first electrical signals applied to the one or more first electrical contacts; a terminator portion comprising a second doped region disposed along the propagation path; and an undoped buffer region disposed between the first doped region and the second doped region, wherein the first doped region and the second doped region are separated along the propagation path by a width of the undoped buffer region, wherein the width is selected such that the undoped buffer region and second doped region collectively present an impedance with a predetermined RC time constant to the first modulator portion to thereby mitigate effects of droop on the propagating optical signal.