| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 121 | Multi-frequency light source | US11407141 | 2006-04-20 | US20060193032A1 | 2006-08-31 | Osamu Aso; Shunichi Matushita; Misao Sakano; Masateru Tadakuma |
| A multi-frequency light producing method and apparatus multiplies the number of optical channels present in an incident wavelength division multiplexed (WDM) signal light source by four-wave mixing (FWM) the WDM signal with at least one pump lightwave at least one time. By FWM the WDM light and a pump lightwave multiple times, wherein each FWM process is executed with a pump lightwave having a different frequency, either in series or parallel, the number of optical channels produced as a result of FWM effectively increases the number of optical channels present in addition to those from the WDM signal. The light producing method and apparatus can be employed in a telecommunications system as a an inexpensive light source producing a plurality of optical frequencies. | ||||||
| 122 | Optical wavelength converter with a semiconductor optical amplifier | US10381890 | 2002-04-01 | US07064891B2 | 2006-06-20 | Yoshinobu Maeda; Takahiro Ichikawa |
| An optical function device capable of controlling an optical signal with another optical signal, wherein a modulated input light Iin of a wavelength λ1 is coupled with a bias light Ibias of a wavelength λ2, and the thus coupled input and bias lights are input to a first semiconductor optical amplifying element 48, so that the bias light Ibias is intensity-modulated in a phase reversed with respect to the input light Iin, while the input light Iin is cut by a first wavelength extracting element 56. A control light Ic of the wavelength λ1 is coupled with the intensity-modulated bias light Ibias of the wavelength λ2, and the thus coupled control and bias lights are input to a second optical amplifying element 50, so that the once reversed bias light Ibias of the wavelength λ2 is intensity-modulated with respect to the control light Ic of the wavelength λ1, and is extracted as an output light by a second wave extracting element 50. The optical function device functions as a three-terminal optical computing and amplifying device, a three-terminal optical switching device or an optical DEMUX device, which is capable of controlling an optical intensity by using one wavelength and which permits multi-stage connection. | ||||||
| 123 | Method and system for optical wavelength conversion and regeneration | US10194552 | 2002-07-12 | US07031617B2 | 2006-04-18 | Libero Zucchelli; Aritz Suescun Sanchez |
| An on/off switchable source of a continuous optical signal at a respective wavelength (λ2) is provided to be turned off when the wavelength (λ1) of the modulated incoming signal corresponds to the respective wavelength (λ2) generated by the source while turning said source on when the wavelength (λ1) of the incoming signal differs from the source wavelength (λ2). A Michelson interferometer is provided adapted to receive the incoming signal and the continuous optical signal generated by the source to produce an output signal. The Michelson interferometer is adapted to give rise to destructive viz. constructive interference when the incoming signal has first and second logical values, respectively. When the wavelength (λ1) of the incoming signal, which is not generally known a priori, corresponds to the source wavelength (λ2), the source is switched off and the output signal is a replica of the incoming signal regenerated at the interferometer. When the wavelength (λ1) of the incoming signal differs from the source wavelength (λ2), the source is switched on and the output signal is a replica of the incoming signal regenerated at the interferometer and wavelength converted to the source wavelength (λ2). | ||||||
| 124 | Intensity modulation of optical signals | US10914260 | 2004-08-09 | US07031047B2 | 2006-04-18 | Paola Parolari; Lucia Marazzi |
| A wavelength converter or demultiplexer device comprising first and second stages (30, 40). For wavelength converter action, the first stage impresses an intensity modulation (IM) and phase modulation (PM) on a CW input signal (λ1) carried by an input DATA signal (λ2) using cross phase modulation in a non-linear optical element (46). The first stage in an embodiment is a semiconductor laser amplifier loop optical mirror (SLALOM) which has a semiconductor optical amplifier (SOA) as the non-linear optical element. The second stage has a non-linear transfer function and impresses a further IM on the optical signal responsive to the PM impressed in the first stage. In an embodiment, the second stage is a polarization maintaining fiber (PMF) optical loop. The transfer function of the overall device is thus improved by making it steeper and more time confined. This is achieved by combining a fast first stage with a second stage that has a non-linear transfer function, so that the residual PM from the first stage synchronously drives a nonlinear process in the second stage. | ||||||
| 125 | Optical functional device based on Mach-Zehnder interferometer, and fabrication method thereof | US10825119 | 2004-04-16 | US20050129356A1 | 2005-06-16 | Keisuke Matsumoto |
| An optical device for optical communication includes a first main electrode disposed between a first splitter and a second splitter on a first arm. A first auxiliary electrode is disposed between the second splitter and a third splitter on the first arm. A second main electrode and a second auxiliary electrode are disposed between a third splitter and a fourth splitter on a second arm. The second main electrode is provided on the second arm at the first port side, and the second auxiliary electrode is provided on the second arm at the second port side. By such disposition of the first and second auxiliary electrodes, input signal light applied through a third port or a fourth port acts on the first main electrode prior to the first and second auxiliary electrodes. Therefore, the input signal light will not be affected by the first and second auxiliary electrodes. | ||||||
| 126 | Systems and methods for wavelength conversion using photonic bandgap shifting | US10349797 | 2003-01-23 | US06906853B2 | 2005-06-14 | Russell Wayne Gruhlke; David Gines; Alfonso Benjamin Amparan |
| Optical systems and methods for optical wavelength conversion are provided. One such exemplary optical system includes a waveguide located in a substrate at least partially of a non-linear optical material, the waveguide structured to receive a continuous-wave optical signal. Also included is a grating located at least partially in the non-linear optical material section of the waveguide. The grating has a period “d,” and the waveguide produces a photonic bandgap when a forward propagating state of photonic energy of the continuous wave signal is separated from a backward propagating state of photonic energy of the continuous wave optical signal by a wavenumber (kz) equal to (2π/d), at a first photonic energy level in the waveguide. | ||||||
| 127 | Non-linear photonic switch | US10293752 | 2002-11-13 | US06885790B2 | 2005-04-26 | Christopher McCoy; John Tsen-Tao Chen |
| A photonic switch may be formed using one of a selected group of non-linear optical materials. Each of the materials within this group has a refractive index that demonstrates a substantial peak as a function of wavelength. The photonic switch includes a positive gain, and thus acts as a photonic transistor. In addition, a photonic switch is formed so that a gate signal is applied in a direction that is substantially perpendicular to the direction of the input signal so that there is no effective contamination of the input signal by the gate signal affecting the output signal. | ||||||
| 128 | Optical apparatus and optical processing method | US10933949 | 2004-09-02 | US20050053385A1 | 2005-03-10 | Kosuke Nishimura; Masashi Usami |
| A first semiconductor optical amplifier is disposed on a first arm of a Mach-Zehnder interferometer and a second semiconductor optical amplifier is disposed on a second arm. An optical splitter splits a probe light into two portions and applies one portion to the first arm and the other to the second arm. A first optical coupler combines the probe lights output from the first and second arms. A second optical splitter splits a data light into two portions. A second optical coupler applies one output from the second optical splitter to the first arm in the backward direction. A third optical coupler applies the other output from the second optical splitter to the second arm in the forward direction. | ||||||
| 129 | Traveling-wave optoelectronic wavelength converter | US10724942 | 2003-12-01 | US20050018941A1 | 2005-01-27 | Christopher Coldren; Larry Coldren |
| Traveling-wave optoelectronic wavelength conversion is provided by a monolithic optoelectronic integrated circuit that includes an interconnected traveling-wave photodetector and traveling-wave optical modulator with a widely tunable laser source. Either parallel and series connections between the photodetector and modulator may be used. An input signal modulated onto a first optical wavelength develops a traveling wave voltage on transmission line electrodes of the traveling-wave photodetector, and this voltage is coupled via an interconnecting transmission line of the same characteristic impedance to transmission line electrodes of the traveling-wave optical modulator to modulate the signal onto a second optical wavelength derived from the tunable laser. The traveling wave voltage is terminated in a load resistor having the same characteristic impedance as the photodetector and modulator transmission lines. However, the interconnecting transmission lines and the load resistor may have different impedances than the photodetector and modulator. | ||||||
| 130 | Optical signal processor and method thereof | US10727971 | 2003-12-03 | US06847475B2 | 2005-01-25 | Michiaki Hayashi; Hideaki Tanaka |
| An optical signal processor comprises a first input terminal for a pulse signal light with a signal wavelength, a second input terminal for a probe light with, probe wavelength different from the signal wavelength, a first splitter to split the probe light into two portions, an XPM optical device to modulate the one portion of the split output lights from the splitter, a second splitter to split light with the probe wavelength phase-modulated by the XPM optical device into two portions, a first combiner to combine the other portion of the split output lights from the first splitter with the one portion of the split output lights from the second splitter, and a second combiner to combine the other portion of the split output lights from the second splitter with the output light from the first combiner. | ||||||
| 131 | Optical signal processor and method thereof | US10727971 | 2003-12-03 | US20040190101A1 | 2004-09-30 | Michiaki Hayashi; Hideaki Tanaka |
| An optical signal processor comprises a first input terminal for a pulse signal light with a signal wavelength, a second input terminal for a probe light with a probe wavelength different from the signal wavelength, a first splitter to split the probe light into two portions, an XPM optical device, to which one portion of the split output lights from the first splitter and the pulse signal light enter, to modulate the one portion of the split output lights from the splitter according to amplitude variation of the pulse signal light, a second splitter to split the light with the probe wavelength phase-modulated by the XPM optical device into two portions, a first combiner to combine the other portion of the spilt output lights from the first splitter with the one portion of the split output lights from the second splitter in in-phase relation during a period corresponding to a non-pulse period of the pulse signal light, and a second combiner to combine the other portion of the split output lights from the second splitter with the output light from the first combiner in in-phase relation during a period corresponding to a pulse period of the pulse signal light. | ||||||
| 132 | Optical converter with a designated output wavelength | US10003146 | 2001-11-15 | US06762876B2 | 2004-07-13 | Michael M. Tilleman; Avigdor Huber |
| An optical wavelength converter that includes an optical sum frequency generator (SFG) and an optical difference frequency generator (DFG). The SFG receives part of both an input beam and a continuous-wave (CW) beam. The DFG receives part of the input beam as well as the output of the SFG. The output of the DFG represents the signal of the input beam modulated or carried on a beam having the frequency of the CW beam. Both single-channel and multi-channel configurations are integrally realized in similar numbers of components. | ||||||
| 133 | Optical control method and device | US10451681 | 2003-06-25 | US20040109690A1 | 2004-06-10 | Yoshinobu Maeda |
| An optical control device capable of controlling an optical signal with another optical signal, wherein a first laser light L1 of a wavelength null1 and a second laser light L2 of a wavelength null2 are coupled together by a first optical coupler (24) and are input to an optical amplifying element (26), and a light of the wavelength null2 which is extracted by an optical filtering element (29) from the output light of the optical amplifying element (26) and a third laser light L3 of the wavelength null1 are coupled together by a second optical coupler (24null) and are input to a second optical amplifying element (26null). A light of the wavelength null1 is extracted by a second optical filtering element (28) from the output light of the second optical amplifying element (26null), whereby an amplified output signal Iout is obtained, as shown at (a) in FIG. 10. The optical control device can generate the output light of the first wavelength null1, by a switching control using the first laser light L1 of the first wavelength and the third input light of the first wavelength null1. | ||||||
| 134 | Non-linear optical carrier frequency converter | US10299195 | 2002-11-19 | US20040095633A1 | 2004-05-20 | Phillip T. Nee; Jeffrey H. Hunt |
| A carrier frequency converter for converting a first information carrier frequency of a first carrier to a second information carrier frequency of a second carrier. The converter includes an input control optics assembly for receiving a first carrier and adjusting the first carrier in accordance with first desired frequency, polarization and beam propagation parameters. A non-linear optical medium provides optical rectification of an output of the input control optics assembly. An output control optics assembly receives an output of the non-linear optical medium and adjusts the output in accordance with second desired frequency, polarization and beam propagation parameters. The output of the output control optics is a second carrier having an information bandwidth equivalent to the information bandwidth of the first carrier. | ||||||
| 135 | Optical signal processing element using saturable absorber and optical amplifier | US10668809 | 2003-09-22 | US20040075890A1 | 2004-04-22 | Hyun Soo Kim; Jong Hoi Kim; Eun Deok Sim; Kang Ho Kim; Oh Kee Kwon; Kwang Ryong Oh |
| The present invention relates to an optical signal processing element capable of performing various functions of equalization of output power, wavelength converting, reshaping or reamplifying an input optical signal using an optical amplifier in which saturable absorbers are integrated, the saturable absorbers being used as an optical gate to improve the extinction ratio of the input optical signal. The saturable absorber and the optical amplifier are connected in series, and a transparent output optical power outputted from the saturable absorber is not less than a saturation input optical power of the optical amplifier. | ||||||
| 136 | Optical and gate and waveform shaping device | US10602629 | 2003-06-25 | US20040004780A1 | 2004-01-08 | Shigeki Watanabe |
| The method according to the present invention includes the steps of inputting an optical signal having a first wavelength and probe light having a second wavelength different from the first wavelength into a nonlinear optical medium, broadening the spectrum of the probe light through cross phase modulation between the optical signal and the probe light inside the nonlinear optical medium, and extracting a signal component including a modulated component of the optical signal and having a band narrower than the band of the spectrum broadened. According to the present invention it can be possible to provide a method and device which can easily convert the wavelength of signal light into an arbitrary wavelength in performing optical 3R functions. | ||||||
| 137 | Optical wavelength converter | US09809401 | 2001-03-15 | US06646784B2 | 2003-11-11 | Juerg Leuthold |
| A wavelength converter with a monolithically integrated delay loop in a delayed interference configuration that needs only one SOA or other non-linear optical element coupled to the input fiber, a first coupler arranged to split the output of the SOA or other non-linear optical amplifying element into two paths having controllable delay and phase shift characteristics, and at least one output coupler to combine the signals present on the two paths to provide the converter output. One embodiment of the invention has a monolithically integrated delay loop utilizing one or more asymmetric couplers. Another embodiment of the invention has a coupler that does not require an asymmetric splitting ratio, and has either a gain element in one of the paths, an attenuation element in one of the paths, or both. | ||||||
| 138 | Optical NRZ-RZ format converter | US09852175 | 2001-05-10 | US06625338B2 | 2003-09-23 | Alexandre Shen; Fabrice Devaux; Michael Schlak; Tolga Tekin |
| Converter of an NRZ signal with a bit duration T comprising an interferometric structure (10) with two arms (9, 11) equipped with a medium (13, 15) with an index that varies depending on the optical power passing through the said medium. The NRZ signal to be converted is input into each of the arms (9, 11). The output signal (7) from the structure is reinput through a means (16) introducing a delay of T/2 in one of the arms (11). The signal at the output (7) is then the NRZ signal converted to the RZ format. | ||||||
| 139 | All-optical logic AND operation in a SOA-based Mach-Zehnder interferometer | US09942686 | 2001-08-31 | US06624929B2 | 2003-09-23 | Byung Kwon Kang; Jae Hun Kim; Seok Lee; Yoon Ho Park; Deok Ha Woo; Sun Ho Kim; Young Min Jhon |
| The present invention relates to the all-optical logic AND operation in a SOA (semiconductor optical amplifier)-based Mach-Zehnder interferometer. More particularly, it relates to the technology making feasible ultra high-speed logic operations while maintaining a small size and a low input power by utilizing a cross-phase modulation (XPM) wavelength converter composed of semiconductor optical amplifiers in the form of a Mach-Zehnder interferometer with nonlinear characteristics. | ||||||
| 140 | Optical regeneration and wavelength conversion using semiconductor optical amplifier based interferometers | US09499132 | 2000-02-07 | US06614582B1 | 2003-09-02 | Benny Peter Mikkelsen; Gregory Raybon |
| An optical translator that includes an interferometer and a plurality of semiconductor optical amplifiers (SOAs) coupled to the interferometer. The at least two of the SOAs receives data and a clock signal. The data is received by the at least two SOAs at different times. A coupler combines each of a respective output of the at least two SOAs to provide output data. The output data is a retimed and a reshaped signal of the data provided to at least one of the plurality of SOAs. | ||||||
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