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US 9,287,987 B2Granted
Self-seeded colorless burst-mode transmitter using reflective semiconductor optical amplifier and injection locked Fabry-Perot laser
AssigneeFuturewei Technologies, Inc.
InventorNing Cheng
Life of this patent
Estimating the term…
Abstract
An apparatus comprises an optical port; a first optical transmitter; a second optical transmitter; a partially reflective mirror positioned between the first optical transmitter, the second optical transmitter, and the optical port; and an optical rotator positioned between the partially reflective mirror and the first optical transmitter.
Claims23
An apparatus comprising:
- an optical port;
- a first optical transmitter comprising a self-seeded laser and configured to:
- transmit a first light;
- and
- receive its own first reflected light associated with the first light;
- a second optical transmitter configured to transmit a second light associated with a second reflected light;
- a partially reflective mirror positioned between the first optical transmitter, the second optical transmitter, and the optical port;
- an optical rotator positioned between the partially reflective mirror and the first optical transmitter;
- and
- a first polarizer positioned between the first optical transmitter and the optical rotator and configured to pass the first light and the first reflected light, but not the second light or the second reflected light.
7 more elements
An apparatus comprising:
- an optical port;
- a first optical transmitter;
- a second optical transmitter;
- a partially reflective mirror positioned between the first optical transmitter, the second optical transmitter, and the optical port;
- and
- an optical rotator positioned between the partially reflective mirror and the first optical transmitter,
- wherein the optical port is configured to couple to an optical distribution network (ODN),
- wherein the first optical transmitter is configured to provide a first light,
- wherein the first optical transmitter is configured to provide an unmodulated light at a wavelength,
- wherein the second optical transmitter is configured to provide a modulated light at the wavelength,
- wherein the ODN comprises a remote node (RN), and
- wherein the RN comprises a second partially reflective mirror and a second optical rotator.
9 more elements
An apparatus comprising:
- an optical port;
- a first optical transmitter;
- a second optical transmitter;
- a partially reflective mirror positioned between the first optical transmitter, the second optical transmitter, and the optical port;
- and
- an optical rotator positioned between the partially reflective mirror and the first optical transmitter,
- wherein the optical port is configured to couple to an optical distribution network (ODN),
- wherein the first optical transmitter is configured to provide a first light,
- wherein the first optical transmitter is configured to provide an unmodulated light at a wavelength,
- wherein the second optical transmitter is configured to provide a modulated light at the wavelength,
- wherein the ODN comprises a remote node (RN), and
- wherein the RN comprises a splitter and a Faraday rotator mirror.
9 more elements
An optical transmitter device comprising:
- a first optical transmitter configured to transmit a first light to provide a wavelength and a reference polarization;
- an optical rotator configured to rotate the first light to produce a rotated light having a rotated polarization;
- a port configured to receive, from a remote node (RN) outside the optical transmitter device, a first reflected light associated with the rotated light;
- a second optical transmitter configured to transmit a second light at the wavelength by locking onto the first reflected light, wherein the second light is a modulated burst or continuous mode light, is oriented about 90 degrees (°) with respect to the rotated light, and is associated with a second reflected light;
- a fiber or waveguide configured to carry the rotated light and the second light;
- and
- a first polarizer positioned between the first optical transmitter and the optical rotator and configured to pass the first light and the first reflected light, but not the second light or the second reflected light.
4 more elements
A method comprising:
- transmitting, by a first optical transmitter, a first light to provide a wavelength and a reference polarization;
- rotating the first light to produce a rotated light having a rotated polarization;
- receiving, by the first optical transmitter, a reflected first light associated with the rotated light, wherein the reflected first light provides a self-seeding light;
- transmitting, by a second optical transmitter, a second light at the wavelength by locking onto the reflected first light, wherein the second light is a modulated burst-mode light, has a substantially small extinction ratio such that any reflections of the second light do not return to the second optical transmitter, and is oriented about 90 degrees (°) with respect to the rotated light;
- and
- combining the rotated light and the second light onto a single fiber.
3 more elements
A method comprising:
- transmitting, using a first optical transmitter, a first light to provide a wavelength and a reference polarization;
- rotating the first light to produce a rotated light having a rotated polarization;
- receiving a reflected first light associated with the rotated light, wherein the reflected first light provides a self-seeding light;
- transmitting, using a second optical transmitter, a second light at the wavelength by locking onto the reflected first light, wherein the second light is a modulated burst-mode light, is oriented about 90 degrees (°) with respect to the rotated light, and has a substantially small extinction ratio such that any reflections of the second light do not return to the second optical transmitter;
- combining the rotated light and the second light onto a single fiber;
- allowing the reflected first light to enter the first optical transmitter;
- allowing the reflected first light to enter the second optical transmitter;
- receiving a reflected second light;
- blocking the reflected second light from entering the first optical transmitter;
- and
- blocking the reflected second light from entering the second optical transmitter.
8 more elements
Dependencies are inferred from the claim text.