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US6256328B1
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Multiwavelength modelocked semiconductor diode laser
Assignee: University of Central Florida Research Foundation Inc
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Filing: 1998-06-11
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Granted: 2001-07-03
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Expires: 2018-06-11
Abstract
Abstract Single-stripe GaAs/AlGaAs semiconductor optical amplifiers which simultaneously generates from four to more than twenty tunable WDM channels. A four channel version transmits approximately 12 picosecond pulses at approximately 2.5 GHz for an aggregate pulse rate of 100 GHz. Wavelength tuning over 18 nm has been demonstrated with channel spacing ranging from approximately 0.8 nm to approximately 2 nm. A second version uses approximately 20 wavelength channels, each transmitting approximately 12 picosecond pulses at a rate of approximately 600 MHz. A spectral correlation across the multiwavelength spectrum which can be for utilizing single stripe laser diodes as multiwavelength sources in WDM-TDM networks. A third version of multiple wavelength generation uses a fiber-array and grating. And a fourth version of wavelength generation uses a Fabry-Perot Spectral filter. Also solid state laser sources and optical fiber laser sources can be used.
Inventors
- 👤 Peter J. Delfyett
- 👤 Hong Shi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:13
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/06; H01S5/065; H01S5/40; H01S5/4025; H01S5/4031; H01S5/4062; H01S5/0657; H01S5/4087
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
85 words
A multiwavelength laser source generation device, the device having a single-stripe semiconductor diode laser source, means for actively modelocking the diode laser source, and means for simultaneously generating at least four tunable separate modelocked wavelengths from the diode laser source, the improvement comprising: means for simultaneously generating up to approximately 20 tunable separate modelocked wavelengths; and multiplexer means for increasing pulse repetition frequency of each of the modelocked wavelengths to approximately 5 Gbits/s and forming an output having an aggregate rate of approximately 100 Gbit/s.
Claim 2
Dependent Claim
85 words
A multiwavelength laser source generation device, the device having a single-stripe semiconductor diode laser source, means for actively modelocking the diode laser source, and means for simultaneously generating at least four tunable separate modelocked wavelengths from the diode laser source, the improvement comprising: means for simultaneously generating up to approximately 20 tunable separate modelocked wavelengths; and multiplexer means for increasing pulse repetition frequency of each of the modelocked wavelengths to approximately 5 Gbits/s and forming an output having an aggregate rate of approximately 100 Gbit/s.
Claim 3
Dependent Claim
16 words
The multiwavelength laser source of claim 1 , wherein the diode laser source includes: Ga As.
Claim 4
Dependent Claim
15 words
The multiwavelength laser source of claim 1 , wherein the diode laser source includes: AlGaAs.
Claim 5
Dependent Claim
15 words
The multiwavelength laser source of claim 1 , wherein the diode laser source includes: InP.
Claim 6
Dependent Claim
15 words
The multiwavelength laser source of claim 1 , wherein the diode laser source includes: InAlGaAs.
Claim 7
Dependent Claim
15 words
The multiwavelength laser source of claim 1 , wherein the diode laser source includes: inAlGaP.
Claim 8
Dependent Claim
15 words
The multiwavelength laser source of claim 1 , wherein the diode laser source includes: GaN.
Claim 9
Dependent Claim
53 words
The multiwavelength laser source of claim 1 , wherein the means for modelocking includes: an rf source of injecting approximately 1 W of an rf signal at a frequency of approximately 2.5 GHz into the diode laser source, and a dc bias source for injecting a dc bias into the diode laser source.
Claim 10
Dependent Claim
19 words
The multiwavelength laser source of claim 1 , wherein the simultaneous wavelength generating means includes: at least 20 wavelengths.
Claim 11
Dependent Claim
24 words
The multiwavelength laser source of claim 1 , wherein each of the wavelengths include: a spacing between approximately 0.8 nm and approximately 2.1 nm.
Claim 12
Dependent Claim
49 words
The multiwavelength laser source of claim 1 , wherein the means for modelocking includes: an rf source for injecting an rf signal having a frequency of approximately 600 MHz into the diode laser source, and a dc bias source for injecting a dc bias into the diode laser source.
Claim 13
Dependent Claim
21 words
The multiwavelength laser source of claim 1 , wherein the means for modelocking includes: an optical amplifier with a spectral filter.
Claim 14
Dependent Claim
20 words
The multiwavelength laser source of claim 12 , wherein the optical amplifier includes: a semiconductor optical amplifier with a grating.
Claim 15
Dependent Claim
16 words
The multiwavelength laser source of claim 12 , wherein the spectral filter includes: a fan shape.
Claim 16
Dependent Claim
15 words
The multiwavelength laser source of claim 14 , wherein the fan shape includes: four slits.
Claim 17
Dependent Claim
16 words
The multiwavelength laser source of claim 12 , wherein the spectral filter includes: a rectangular shape.
Claim 18
Dependent Claim
16 words
The multiwavelength laser source of claim 16 , wherein the rectangular shape includes: twenty parallel slits.
Claim 19
Dependent Claim
17 words
The multiwavelength laser source of claim 12 , wherein the spectral filter includes: a fabry perot etalon.
Claim 20
Dependent Claim
16 words
The multiwavelength laser source of claim 12 , wherein the spectral filter includes: arrayed waveguide grating.
Claim 21
Dependent Claim
17 words
The multiwavelength laser source of claim 12 , wherein the spectral filter includes: cascaded fiber bragg gratings.
Claim 22
Dependent Claim
18 words
The multiwavelength laser source of claim 12 , wherein the spectral filter includes: cascaded mach zehnder wavelength demultiplexers.
Claim 23
Dependent Claim
16 words
The multiwavelength laser source of claim 12 , wherein the spectral filter includes: fiber-grating wavelength demultiplexers.
Claim 24
Dependent Claim
20 words
The multiwavelength laser source of claim 12 , wherein the device includes: an output having coherently phase locked optical pulses.
Claim 25
Dependent Claim
17 words
The multiwavelength laser source of claim 12 , wherein the spectral filter includes: a Fabry-Perot Spectral Filter.
Claim 26
Dependent Claim
19 words
The multiwavelength laser source of claim 1 , wherein the means for modelocking includes: a fiber array and grating.
Claim 27
Dependent Claim
124 words
A multiwavelength laser source generating device, the device having a single laser source, means for actively modelocking the single laser source, the means for modelocking includes an rf source having a frequency of approximately 2.5 GHz to approximately 600 MHz and a bias source, the rf source and the bias source being injected into the single laser source, means for simultaneously generating at least four tunable separate modelocked wavelengths from the single laser source, the improvement comprising: means for simultaneously generating up to approximately twenty tunable separate modelocked wavelengths from the single laser source; and multiplexer means for increasing pulse repetition frequency of each of the modelocked wavelengths to approximately 5 Gbits/s and forming an output having an aggregate rate of approximately 100 Gbit/s.
Claim 28
Dependent Claim
124 words
A multiwavelength laser source generating device, the device having a single laser source, means for actively modelocking the single laser source, the means for modelocking includes an rf source having a frequency of approximately 2.5 GHz to approximately 600 MHz and a bias source, the rf source and the bias source being injected into the single laser source, means for simultaneously generating at least four tunable separate modelocked wavelengths from the single laser source, the improvement comprising: means for simultaneously generating up to approximately twenty tunable separate modelocked wavelengths from the single laser source; and multiplexer means for increasing pulse repetition frequency of each of the modelocked wavelengths to approximately 5 Gbits/s and forming an output having an aggregate rate of approximately 100 Gbit/s.
Claim 29
Dependent Claim
17 words
The multiwavelength laser source of claim 26 , wherein the laser source includes: an optical fiber laser.
Claim 30
Dependent Claim
23 words
The multiwavelength laser source of claim 27 , wherein the optical fiber laser includes: a laser chosen from one of erbium and praesodimium.
Claim 31
Dependent Claim
28 words
The multiwavelength laser source of claim 26 , wherein the laser source includes: a laser chosen from one of YAG, fosterite, LiSAF, and Ti:Al 2 O 3 .
Claim 32
Independent Claim
108 words
A method of generating modelocked multiwavelengths from a device, the device having the steps of modelocking a single laser source within the device by injecting the single laser source with an rf source having a frequency of approximately 2.5 GHz to approximately 600 MHz and a bias source, and generating simultaneously at least four tunable separate modelocked wavelengths from the device, the improved method comprising the steps of: generating simultaneously up to approximately 20 tunable separate modelocked wavelengths from the device; and increasing pulse repetition frequency of each of the modelocked wavelengths to approximately 5 Gbits/s with a multiplexer means to form an aggregate rate of 100 Gbits/s.
Claim 33
Independent Claim
108 words
A method of generating modelocked multiwavelengths from a device, the device having the steps of modelocking a single laser source within the device by injecting the single laser source with an rf source having a frequency of approximately 2.5 GHz to approximately 600 MHz and a bias source, and generating simultaneously at least four tunable separate modelocked wavelengths from the device, the improved method comprising the steps of: generating simultaneously up to approximately 20 tunable separate modelocked wavelengths from the device; and increasing pulse repetition frequency of each of the modelocked wavelengths to approximately 5 Gbits/s with a multiplexer means to form an aggregate rate of 100 Gbits/s.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-07-02 | 2005-01-01 | 2005-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-07-02 | 2009-01-01 | 2009-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-07-02 | 2013-01-01 | 2013-07-03 | $7700.00 | Window Closed / Lapsed |