Hybrid optical transmitter and/or receiver structure

Patent metadata

Field	Value
Publication number	US-10707965-B2
Application number	US-201916241625-A
Country	US
Kind code	B2
Filing date	Jan 7, 2019
Priority date	Apr 30, 2014
Publication date	Jul 7, 2020
Grant date	Jul 7, 2020

Abstract

A device may include a substrate. The device may include a carrier mounted to the substrate. The device may include a transmitter photonic integrated circuit (PIC) mounted on the carrier. The transmitter PIC may include a plurality of lasers that generate an optical signal when a voltage or current is applied to one of the plurality of lasers. The device may include a first microelectromechanical structure (MEMS) mounted to the substrate. The first MEMS may include a first set of lenses. The device may include a planar lightwave circuit (PLC) mounted to the substrate. The PLC may be optically coupled to the plurality of lasers by the first set of lenses of the first MEMS. The device may include a second MEMS, mounted to the substrate, that may include a second set of lenses, which may be configured to optically couple the PLC to an optical fiber.

First claim

What is claimed is:

1. A device, comprising:
a substrate;
a first photonic integrated circuit (PIC) mounted on the substrate, the first PIC including a photodetector;
a second PIC mounted on the substrate,
the second PIC including a set of optical devices;
a first aligner mounted on the substrate,
the first aligner including a first set of lenses, each of the first set of lenses being a focusing lens,
the first set of lenses being configured to optically couple the first PIC to the second PIC; and
a second aligner mounted on the substrate,
the second aligner including a second set of lenses, each of the second set of lenses being a collimating lens,
the second set of lenses being configured to optically couple the second PIC to an optical fiber,
wherein the distance between the second set of lenses and the first set of lenses is greater than the distance between the first set of lenses and the photodetector.

2. The device of claim 1 , further comprising a planar lightwave circuit (PLC) mounted on the second PIC,
the PLC being optically coupled to the first PIC via the first set of lenses and being optically coupled to the optical fiber via the second set of lenses.

3. The device of claim 1 , further comprising:
a carrier,
the first PIC being mounted on the carrier; and

a third PIC mounted on the carrier,
the third PIC including a laser that generates an optical signal when a voltage or a current is applied to the laser,
the laser being optically coupled to the second PIC via the first set of lenses.

4. The device of claim 1 , where the first aligner or the second aligner further comprises:
a microelectromechanical structure (MEMS).

5. The device of claim 1 , where the first aligner further comprises:
an actuator,
the actuator being configured to position the first set of lenses to cause the first set of lenses to optically couple the first PIC to the second PIC.

6. The device of claim 1 , further comprising:
a demultiplexer,
the demultiplexer being configured to demultiplex one or more wavelengths of light associated with an optical signal output by an optical device of the set of optical devices.

7. The device of claim 1 , wherein the set of optical devices includes 90-degree optical hybrid circuit.

8. The device of claim 1 , wherein the set of optical devices includes an optical multiplexer.

9. The device of claim 1 , wherein the set of optical devices includes an optical tap.

10. The device of claim 1 , wherein the set of optical devices includes a variable optical attenuator.

11. The device of claim 1 , wherein the set of optical devices includes a laser control element.

Assignees

• Infinera Corp

Inventors

• Butrie Timothy
• Reffle Michael
• Han Xiaofeng
• Ziari Mehrdad
• Lal Vikrant
• Evans Peter W
• Klsh Jr Fred A
• Pavinski Donald J
• Tang Jie
• Coult David

Classifications

• G02B6/4215

  the intermediate optical elements being wavelength selective optical elements, e.g. variable wavelength optical modules or wavelength lockers (G02B6/4246 takes precedence) · CPC title

• G02B6/4246

  Bidirectionally operating package structures · CPC title

• H04J14/06

  Polarisation multiplex systems · CPC title

• G02B6/3598

  Switching means directly located between an optoelectronic element and waveguides, including direct displacement of either the element or the waveguide, e.g. optical pulse generation (based on changing the optical properties of the medium G02F1/00; optical pulse generation in optical transmitters H04B10/508; optical pulse generation by controlling laser operation H01S3/00) · CPC title

• H04B10/60

  Receivers · CPC title