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US 2018/0321519 A1Published application
Method and system for integrated differential electro-absorption modulator device
AssigneeInphi Corporation
InventorRadhakrishnan L. NAGARAJAN
Life of this patent
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Abstract
An integrated differential Electro-Absorption Modulator (EAM) device. The device includes a substrate, an electrical driver, and two EAM modules. The electrical driver circuit is configured overlying the substrate member and has one output electrically coupled to the first EAM module and the other output electrically coupled to the second EAM module. The first and second EAM modules have a first and a second output, respectively. A beam splitter can be configured to split an optical input into two optical outputs, each of which can be optically coupled to the optical inputs of the first and second EAM modules.
Claims20
An EAM (Electro-Ab sorption Modulator) device, the device comprising:
- a substrate member;
- an electrical driver circuit configured overlying the substrate member;
- a first EAM module electrically coupled to the electrical driver circuit, the first EAM module including a first output;
- a second EAM module electrically coupled to the electrical driver circuit, the second EAM including a second output;
- a common mode termination resistor coupled to the first EAM module and the second EAM module;
- and
- a bias circuit electrically coupled to the first EAM module and the second EAM module.
4 more elements
A monolithically integrated system on chip device, the device comprising:
- a single silicon substrate member;
- a data input/output interface provided on the substrate member and configured for a predefined data rate and protocol;
- an input/output block provided on the substrate member and coupled to the data input/output interface, the input/output block comprising a SerDes block, a CDR block, a compensation block, and an equalizer block;
- a signal processing block provided on the substrate member and coupled to the input/output block, the signal processing block configured to the input/output block using a bi-directional bus in an intermediary protocol;
- a driver module provided on the substrate member and coupled to the signal processing block, the driver module coupled to the signal processing blocking using a uni-directional multi-lane bus, the driver module having an electrical driver circuit and a bias circuit configured overlying the single silicon substrate member;
- a driver interface provided on the substrate member and coupled to the driver module and configured to be coupled to a silicon photonics device, the driver interface being configured to transmit output data in either an amplitude modulation format or a combination of phase/amplitude modulation format or a phase modulation format;
- a receiver module comprising a TIA block provided on the substrate member and to be coupled to the silicon photonics device using predefined modulation format, and configured to the digital signal processing block to communicate information to the input output block for transmission through the data input/output interface;
- a communication block provided on the substrate member and operably coupled to the input/output block, the digital signal processing block, the driver block, and the receiver block;
- a communication interface coupled to the communication block;
- a control block provided on the substrate member and coupled to the communication block;
- and
- an interface provided to communicate between the control block and the silicon photonics device, the interface comprising:
- a modulator bias voltage input;
- a laser DC bias current input;
- a photo current or set output;
- a power monitor current/voltage output;
- a photo detector bias input;
- a heater current/voltage input;
- a photo current from input signal or set output, and
- a wavelength monitor voltage/current/resistance output;
- wherein the silicon photonics device comprises:
- a first EAM module electrically coupled to the electrical driver circuit, the first EAM module including a first output;
- a second EAM module electrically coupled to the electrical driver circuit, the second EAM including a second output;
- a common mode termination resistor coupled to the first EAM module and the second EAM module;
- and
- a beam splitter module operably coupled to the first EAM module and the second EAM module;
- wherein the bias circuit is electrically coupled to the first EAM module and the second EAM module.
24 more elements
Dependencies are inferred from the claim text.