Pseudo-balanced driver
US10700490B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 30, 2017 |
| Grant date | Jun 30, 2020 |
| Priority date | — |
| Expiry date | Aug 7, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/0428
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A driver for driving laser or a modulator comprises a switch block for switching a current to the laser or modulator and a voltage converter comprising a voltage supply node, an input port for connecting a laser or modulator supply voltage and an output port connected to the switch block. The voltage converter comprises a voltage replica block adapted for generating a pre-defined voltage and is adapted for equalizing DC voltages in the driver by using the pre-defined voltage. The pre-defined voltage approximates the threshold voltage drop of a laser when the driver is connected with a laser or approximates the bias voltage over a modulator when connected with a modulator. The driver comprises a balancer comprising a dummy load connected to the switch block adapted for equalizing voltages in the switch block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.