Electro-absorption modulator with integrated control loop for linearization and temperature compensation
US10673532B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2019 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Dec 10, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/60
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electro-absorption modulator (EAM) comprising an integrated high speed electro-optical control loop for very high-speed linearization and temperature compensation for analog optical data center interconnect applications is disclosed. The control loop can function in a stable manner because the electronics and optical components are monolithically integrated on a single substrate in small form factor. Because of the small size enabled by monolithic integration, the temperatures of the optical blocks and electronics blocks are tightly coupled, and the control loop time delays and phase delays are small enough to be stable, even for very high frequency operation. This arrangement enables a low cost, low power analog transmitter implementation for data center optical interconnect applications using advanced modulation schemes, such as PAM-4 and DP-QPSK.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.