Title:
ALL−OPTICAL FLIP−FLOP
Document Type and Number:
WIPO Patent Application WO/2003/025665
Kind Code:
A1
Abstract:
A set−reset flip−flop of all−optical operation. A set light is inputted through a set port. Then, a multimode interference portion in a waveguide oscillates only in a set mode. As a result, a noninverted output Q is produced from a noninverted output port. Even if the input of the set light is turned off, the output state is maintained. When a reset light is inputted through a reset port, the multimode interference portion stops its oscillation in the set mode and causes oscillation in a reset mode. Thus, an inverted output Q−bar is generated from an inverted output port. Even if the reset light input is turned off, the output state is maintained.
Inventors:
NAKANO YOSHIAKI (JP)
TAKENAKA MITSURU (JP)
TAKENAKA MITSURU (JP)
Application Number:
PCT/JP2002/009238
Publication Date:
March 27, 2003
Filing Date:
September 10, 2002
Export Citation:
Assignee:
JAPAN SCIENCE & TECH CORP (JP)
NAKANO YOSHIAKI (JP)
TAKENAKA MITSURU (JP)
NAKANO YOSHIAKI (JP)
TAKENAKA MITSURU (JP)
International Classes:
G02F3/00; G02F3/02; H01S3/082; H01S5/50; G02F1/01; (IPC1-7): G02F3/00
Foreign References:
| JPS5125710B1 | 1976-08-02 | |||
| JPH0613714A | 1994-01-21 | |||
| JPH0653610A | 1994-02-25 | |||
| JP2001166349A | 2001-06-22 | |||
| JPH09186389A | 1997-07-15 | |||
| JPH07225404A | 1995-08-22 | |||
| JPH04116630A | 1992-04-17 | |||
| US5999284A | 1999-12-07 | |||
| US5999283A | 1999-12-07 |
Other References:
JOHNSON J.E. AND TANG C.L.: "Optical flip-flop based on two-mode intensity bistability in a cross-coupled bistable laser diode", APPLIED PHYSICS LETTERS, vol. 63, no. 24, 13 December 1993 (1993-12-13), pages 3273 - 3275, XP000416522
JIAN B.B.: "Continuous-wave operation of monolithic two-mode optical flip-flop with etched laser mirrors", ELECTRONICS LETTERS, vol. 32, no. 20, 26 September 1996 (1996-09-26), pages 1923 - 1925, XP000637912
WATANABE M. ET AL.: "An optical set-reset flip-flop semiconductor laser with two mutually complementary outputs", PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON OPTICAL COMPUTING, no. 139, 1995, pages 581 - 584, XP002962965
MASANOBU WATANABE: "Twin stripe laser ni okeru kosa ketsugo mode so anteisei", BULLETIN OF THE ELECTROTECHNICAL LABORATORY, vol. 57, no. 11, November 1993 (1993-11-01), pages 69 - 77, XP002962966
HILL M.T. ET AL.: "Technical Digest. Summaries of papers presented at the Conference on Lasers and Electro-optics, CLEO 2001", vol. 56, May 2001, POSTCONFERENCE TECHNICAL DIGEST, article "Fast all optical flip-flop using coupled mach-zehnder interferometers", pages: 188, XP010559719
CHATTOPADHYAY T. AND NAKAJIMA M.: "All optical set-reset flip-flop memory element: a proposal", OPTICS COMMUNICATIONS, vol. 138, no. 4-6, 1 June 1997 (1997-06-01), pages 320 - 324, XP004064423
MAYWAR D.N. ET AL.: "All-optical hysteresis control by means of cross-phase modulation in semiconductor optical amplifiers", JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B, vol. 18, no. 7, July 2001 (2001-07-01), pages 1003 - 1013, XP002962967
See also references of EP 1437622A4
JIAN B.B.: "Continuous-wave operation of monolithic two-mode optical flip-flop with etched laser mirrors", ELECTRONICS LETTERS, vol. 32, no. 20, 26 September 1996 (1996-09-26), pages 1923 - 1925, XP000637912
WATANABE M. ET AL.: "An optical set-reset flip-flop semiconductor laser with two mutually complementary outputs", PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON OPTICAL COMPUTING, no. 139, 1995, pages 581 - 584, XP002962965
MASANOBU WATANABE: "Twin stripe laser ni okeru kosa ketsugo mode so anteisei", BULLETIN OF THE ELECTROTECHNICAL LABORATORY, vol. 57, no. 11, November 1993 (1993-11-01), pages 69 - 77, XP002962966
HILL M.T. ET AL.: "Technical Digest. Summaries of papers presented at the Conference on Lasers and Electro-optics, CLEO 2001", vol. 56, May 2001, POSTCONFERENCE TECHNICAL DIGEST, article "Fast all optical flip-flop using coupled mach-zehnder interferometers", pages: 188, XP010559719
CHATTOPADHYAY T. AND NAKAJIMA M.: "All optical set-reset flip-flop memory element: a proposal", OPTICS COMMUNICATIONS, vol. 138, no. 4-6, 1 June 1997 (1997-06-01), pages 320 - 324, XP004064423
MAYWAR D.N. ET AL.: "All-optical hysteresis control by means of cross-phase modulation in semiconductor optical amplifiers", JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B, vol. 18, no. 7, July 2001 (2001-07-01), pages 1003 - 1013, XP002962967
See also references of EP 1437622A4
Attorney, Agent or Firm:
Naruse, Shigeo (INABA & INAMI Hanabishi Imas Hirakawacho
Building, 4th Floor, 3-11, Hirakawacho 2-chom, Chiyoda-ku Tokyo, JP)
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