# US 12,015,446 B2 · Optical transceivers with multi-laser modules

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 12,015,446 B2
- Document ID: US12015446B2
- Status: Granted
- Kind: B2
- Application number: 16/984,437
- Filed: 2020-08-04
- Published: 2020-12-24
- Granted: 2024-06-18
- Earliest claimed: 2020-08-04
- Assignees: Intel Corporation
- Applicants: Intel Corporation
- Inventors: Saeed Fathololoumi; Ling Liao; Quan Tran
- Web page: https://patentgrep.com/patent/US12015446B2

## CPC

- H04B 10/5053: {using a parallel, i.e. shunt, combination of modulators}
- H04B 10/524: Pulse modulation
- H04B 10/506: {Multiwavelength transmitters}
- H04B 10/508: Pulse generation, e.g. generation of solitons
- H04B 10/671: {for controlling the input optical signal}
- H04B: TRANSMISSION

## Abstract

Disclosed herein are optical transceivers with multi-laser modules, as well as related optoelectronic assemblies and methods. In some embodiments, an optical transceiver may include: a first laser and a second laser; an optical output path, wherein an output of the first laser is coupled to the optical output path; and switching circuitry to decouple the output of the first laser from the optical output path and to couple an output of the second laser to the optical output path.

## Claims

### Claim 1

An optical transceiver, comprising:
a plurality of lasers including a first laser and a second laser;
modulator circuitry; and
switching circuitry coupled between the plurality of lasers and the modulator circuitry, wherein the switching circuitry is to selectively couple an output of the first laser to the modulator circuitry or an output of the second laser to the modulator circuitry.

### Claim 2 (depends on 1)

The optical transceiver of claim 1, wherein the first laser includes indium and phosphorous.

### Claim 3 (depends on 1)

The optical transceiver of claim 1, wherein the switching circuitry is to couple the output of the first laser to the modulator circuitry and, upon detection of a power of the first laser being below a threshold, to couple the output of the second laser to the modulator circuitry.

### Claim 4 (depends on 1)

The optical transceiver of claim 1, wherein the modulator circuitry includes multiplexer circuitry.

### Claim 5 (depends on 1)

The optical transceiver of claim 1, wherein the switching circuitry includes a Mach-Zehnder switch.

### Claim 6 (depends on 1)

The optical transceiver of claim 1, wherein the switching circuitry includes multiple switches.

### Claim 7 (depends on 1)

The optical transceiver of claim 1, wherein the first laser is a hybrid silicon laser.

### Claim 8 (depends on 1)

The optical transceiver of claim 1, wherein the switching circuitry is to couple the output of the first laser to the modulator circuitry and, upon detection of a bias current exceeding a predetermined limit, to couple the output of the second laser to the modulator circuitry.

### Claim 9 (depends on 1)

The optical transceiver of claim 1, further comprising flip chip bond pads.

### Claim 10 (depends on 1)

The optical transceiver of claim 1, further comprising a photodetector.

### Claim 11 (depends on 1)

The optical transceiver of claim 1, further comprising a fiber optic cable connector.

### Claim 12 (depends on 1)

The optical transceiver of claim 1, further comprising at least one of: optical signal circuitry, demodulator circuitry, or detector circuitry.

### Claim 13

An optical transceiver, comprising:
a first laser, a second laser, and a third laser;
a first optical output path;
a second optical output path;
first switching circuitry to selectively couple an output of the first laser to the first optical output path or an output of the second laser to the first optical output path; and
second switching circuitry to couple an output of the third laser to the second optical output path without intervening switching circuitry.

### Claim 14 (depends on 13)

The optical transceiver of claim 13, wherein the second laser is spatially between the first laser and the third laser.

### Claim 15 (depends on 13)

The optical transceiver of claim 13, wherein the optical transceiver includes indium phosphide bonded to silicon.

### Claim 16 (depends on 13)

The optical transceiver of claim 13, further comprising:
a photodetector.

### Claim 17 (depends on 14)

The optical transceiver of claim 14, further comprising a fourth laser, wherein the third laser is spatially between the second laser and the fourth laser.

### Claim 18

An optoelectronic assembly, comprising:
an optical transceiver, including:
a plurality of lasers comprising a first laser and a second laser,
modulator circuitry, and
switching circuitry coupled between the plurality of lasers and the modulator circuitry, wherein the switching circuitry is to selectively couple an output of the first laser to the modulator circuitry or an output of the second laser to the modulator circuitry; and
a network switch coupled to the optical transceiver.

### Claim 19 (depends on 18)

The optoelectronic assembly of claim 18, wherein the optical transceiver and the network switch are coupled to a support component.

### Claim 20 (depends on 19)

The optoelectronic assembly of claim 19, wherein the support component includes silicon.

### Claim 21 (depends on 19)

The optoelectronic assembly of claim 19, wherein the support component includes a package substrate.

### Claim 22 (depends on 18)

The optoelectronic assembly of claim 18, wherein the optoelectronic assembly further includes:
a fiber optic cable connector.

### Claim 23 (depends on 18)

The optoelectronic assembly of claim 18, wherein the optical transceiver is one of a plurality of optical transceivers in the optoelectronic assembly.

### Claim 24 (depends on 23)

The optoelectronic assembly of claim 23, wherein the plurality of optical transceivers and the network switch are coupled to a support component.