Avago Technologies General IP (Singapore) Pte. Ltd.

Avago Technologies International Sales Pte. Limited

Kartikeya Gupta

Faouzi Chaahoub

Georgios Asmanis

Samir Aboulhouda

Rahul Shringarpure

Ahmed Rashid Syed

Kazi Asaduzzaman

A control device that may be implemented in a single IC chip is provided that is capable of controlling EAM bias voltages and DFB bias currents and of monitoring the EAM photocurrents and received signal strength indicators (RSSIs) in a multi-channel optical transceiver module. The control device IC chip can be manufactured at relatively low cost with relatively high yield, and can be implemented in a relatively small area. To implement the control device in a single IC chip, multiple supply voltage domains are used in the IC chip, one of which is a negative supply voltage domain and one of which is a positive supply voltage domain. In order to provide these different supply voltage domains, a level shift circuit is employed in the IC chip that converts signals from the positive to the negative supply voltage domain, and vice versa, and changes the voltage levels, as needed.

Control device and method for controlling biasing of multiple light sources of multiple channels of a multi-channel optical communications module

A burst-mode TIA circuit for use in PON receivers is provided that supports multiple data rates, has high receiver sensitivity, wide dynamic range, and that performs burst-mode synchronization very quickly. The multi-rate burst-mode TIA circuit has a high-speed data path that has low input-referred noise. Based on the chosen data rate at which the multi-rate burst-mode TIA circuit will operate, the rate select switch selects an appropriate feedback resistor of the resistive feedback network.

Multi-data rate, burst-mode transimpedance amplifier (TIA) circuit

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San Jose, CA, United States of America

Kartikeya Gupta