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US 2002/0176155 A1Published application
Multi-stage optical amplifier and broadband communication system
AssigneeXtera Communications, Inc.
InventorMohammed N. Islam
Life of this patent
Estimating the term…
Abstract
A multi-stage optical amplifier that has an optical fiber with a first length of amplifier fiber and a second length of amplifier fiber. The optical fiber is configured to be coupled to a signal source that produces at least a signal wavelength λs and a pump source that produces a pump wavelength λp. Pump wavelength λp is less than signal wavelength λs. Signal input, signal output and pump input ports are each coupled to the optical fiber. A first lossy member is coupled to the optical fiber and positioned between the first and second lengths of amplifier fiber. A pump shunt is coupled to the signal input port and the signal output port.
Claims52
A multi-stage optical amplifier, comprising:
- an optical fiber including a first length of amplifier fiber and a second length of amplifier fiber, the optical fiber configured to be coupled to a signal source that produces at least a signal wavelength λs and a pump source that produces a pump wavelength λp, wherein pump wavelength λp is less than signal wavelength λs;
- a signal input port coupled to the optical fiber;
- a signal output port coupled to the optical fiber;
- a pump input port coupled to the optical fiber;
- a first lossy member coupled to the optical fiber and positioned between the first and second lengths of amplifier fiber, the first lossy member being lossy in at least one direction;
- and
- a pump shunt coupled to the signal input port and the signal output port.
4 more elements
A broadband booster amplifier, comprising:
- a plurality of transmitters transmitting a plurality of wavelengths;
- a combiner coupled to the plurality of transmitters;
- an optical fiber coupled to the combiner, the optical fiber including a first length of amplifier fiber and a second length of amplifier fiber, the optical fiber configured to be coupled to a signal source and a pump source;
- a signal input port coupled to the optical fiber;
- a signal output port coupled to the optical fiber;
- a pump input port coupled to the optical fiber;
- a first lossy member coupled to the optical fiber and positioned between the first and second lengths of amplifier fiber, the first lossy member being lossy in at least one direction;
- and
- a pump shunt coupled to the signal input port and the signal output port.
6 more elements
A broadband pre-amplifier, comprising:
- an optical fiber including a first length of amplifier fiber and a second length of amplifier fiber, the optical fiber configured to be coupled to a signal source and a pump source;
- a signal input port coupled to the optical fiber;
- a signal output port coupled to the optical fiber;
- a pump input port coupled to the optical fiber;
- a first lossy member coupled to the optical fiber and positioned between the first and second lengths of amplifier fiber, the first lossy member being lossy in at least one direction;
- a pump shunt coupled to the signal input port and the signal output port;
- a splitter coupled to the signal output port;
- and
- a plurality of receivers coupled to the splitter.
6 more elements
A broadband communication system, comprising:
- a transmitter;
- an optical fiber including a first length of amplifier fiber and a second length of amplifier fiber, the optical fiber configured to be coupled to a signal source and a pump source;
- a signal input port coupled to the optical fiber;
- a signal output port coupled to the optical fiber;
- a pump input port coupled to the optical fiber;
- a first lossy member coupled to the optical fiber and positioned between the first and second lengths of amplifier fiber, the first lossy member being lossy in at least one direction;
- a pump shunt coupled to the signal input port and the signal output port;
- and
- a receiver coupled to the optical fiber.
6 more elements
A broadband communication system, comprising:
- a transmitter;
- an optical fiber coupled to the transmitter, the optical fiber including a first length of amplifier fiber and a second length of amplifier fiber, the optical fiber configured to be coupled to a signal source and a pump source;
- a signal input port coupled to the optical fiber;
- a signal output port coupled to the optical fiber;
- a pump input port coupled to the optical fiber;
- a first lossy member coupled to the optical fiber and positioned between the first and second lengths of amplifier fiber, the first lossy member being lossy in at least one direction;
- a pump shunt coupled to the signal input port and the signal output port;
- at least one in-line broadband amplifier coupled to the optical fiber;
- and
- a receiver coupled to the in-line broadband amplifier.
7 more elements
A broadband communication system, comprising:
- a transmitter;
- a broadband booster amplifier;
- an optical fiber coupled to the broadband booster amplifier, the optical fiber including a first length of amplifier fiber and a second length of amplifier fiber, the optical fiber configured to be coupled to a signal source and a pump source;
- a signal input port coupled to the optical fiber;
- a signal output port coupled to the optical fiber;
- a pump input port coupled to the optical fiber;
- a first lossy member coupled to the optical fiber and positioned between the first and second lengths of amplifier fiber, the first lossy member being lossy in at least one direction;
- a pump shunt coupled to the signal input port and the signal output port;
- and
- a receiver coupled to the optical fiber.
7 more elements
A broadband communication system, comprising:
- a transmitter;
- an optical fiber coupled to the transmitter, the optical fiber including a first length of amplifier fiber and a second length of amplifier fiber, the optical fiber configured to be coupled to a signal source and a pump source;
- a signal input port coupled to the optical fiber;
- a signal output port coupled to the optical fiber;
- a pump input port coupled to the optical fiber;
- a first lossy member coupled to the optical fiber and positioned between the first and second lengths of amplifier fiber, the first lossy member being lossy in at least one direction;
- a pump shunt coupled to the signal input port and the signal output port;
- a broadband pre-amplifier coupled to the optical fiber;
- and
- a receiver coupled to the broadband pre-amplifier.
7 more elements
A broadband communication system, comprising:
- a transmitter;
- a broadband booster amplifier coupled to the transmitter;
- an optical fiber coupled to the booster broadband amplifier, the optical fiber including a first length of amplifier fiber and a second length of amplifier fiber, the optical fiber configured to be coupled to a signal source and a pump source;
- a signal input port coupled to the optical fiber;
- a signal output port coupled to the optical fiber;
- a pump input port coupled to the optical fiber;
- a first lossy member coupled to the optical fiber and positioned between the first and second lengths of amplifier fiber, the first lossy member being lossy in at least one direction;
- a pump shunt coupled to the signal input port and the signal output port;
- a broadband pre-amplifier coupled to the optical fiber;
- and
- a receiver coupled to the broadband pre-amplifier.
8 more elements
Dependencies are inferred from the claim text.