Method for eliminating nonlinear effects, transmitter and receiver
US-2016380700-A1 · Dec 29, 2016 · US
Methods of achieving optimal communications performance
US8958666B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8958666-B2 |
| Application number | US-64933707-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 3, 2007 |
| Priority date | Mar 15, 2001 |
| Publication date | Feb 17, 2015 |
| Grant date | Feb 17, 2015 |
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Abstract
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A system includes an optical transmitter that outputs an optical signal having a substantially Gaussian waveform and an optical receiver that is optically coupled to the optical transmitter and has an impulse response essentially matching the waveform. The impulse response and waveform preferably match in the time domain. The transmitter and receiver may be average-power-limited, using, for example, an erbium-doped fiber amplifier. To achieve a high signal-to-noise ratio, the waveform may be designed to minimize jitter, sample duration, matching parasitics, and inter-symbol interference (ISI). Such a waveform may be a return-to-zero (RZ) Gaussian or Gaussian-like waveform and may be transmitted in a variety of modulation formats. Further, the system may be used in WDM or TDM systems. A method for characterizing the time domain impulse response of an optical element used in the optical receiver is provided, where the method is optionally optimized using deconvolution and/or cross-correlation techniques.
First claim
Opening claim text (preview).
What is claimed is: 1. An optical receiver, comprising: an optical filter having a substantially Gaussian time domain optical impulse response essentially equivalent to a time domain waveform of a received optical signal to be filtered. 2. The optical receiver as claimed in claim 1 further including detection electronics optically coupled to the optical filter to convert the optical signal to a corresponding electrical signal. 3. The opt…
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Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
- H04B10/25137Primary
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8958666B2 cover?
- A system includes an optical transmitter that outputs an optical signal having a substantially Gaussian waveform and an optical receiver that is optically coupled to the optical transmitter and has an impulse response essentially matching the waveform. The impulse response and waveform preferably match in the time domain. The transmitter and receiver may be average-power-limited, using, for exa…
- Who is the assignee on this patent?
- Caplan David O, Atia Walid A, Massachusetts Inst Technology
- What technology area does this patent fall under?
- Primary CPC classification H04B10/25137. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 17 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).