Optical communications – Transmitter – Having particular modulation
Reexamination Certificate
2004-01-23
2010-06-29
Vanderpuye, Ken N (Department: 2613)
Optical communications
Transmitter
Having particular modulation
C398S199000, C398S159000, C398S147000, C398S183000, C398S185000, C359S279000, C359S337500, C359S338000
Reexamination Certificate
active
07747175
ABSTRACT:
To compensate a waveform distortion by using a nature that a spectral shape is perfectly retained even if all the linear distortions occur on a time-axis. An optical pulse transmitted from an optical pulse transmitter (1) via an optical fiber transmission line (2) is transmitted. An optical Fourier transformer (3) receives an optical pulse, and optically Fourier-transforms an optical pulse on a time-axis onto a frequency-axis to reproduce the frequency spectrum of an optical pulse on a time-axis be effecting switching between frequency and time, thereby compensating a waveform distortion by a linear effect on the optical fiber transmission line (2). A photodetector (4) receives an optical pulse from the optical Fourier transformer (3) and transforms this into an electrical signal to thereby obtain a pulse waveform before a transmission over the optical fiber transmission line (2).
REFERENCES:
patent: 6333942 (2001-12-01), Nakazawa et al.
patent: 6879640 (2005-04-01), Agazzi
patent: 7181097 (2007-02-01), Caplan et al.
patent: 7352504 (2008-04-01), Hirooka et al.
patent: 2001/0053008 (2001-12-01), Ueno
patent: 2002/0141016 (2002-10-01), Murai
patent: 2002/0141694 (2002-10-01), Caplan et al.
patent: 2003/0058504 (2003-03-01), Cho et al.
patent: 2003/0128917 (2003-07-01), Turpin et al.
patent: 2004/0008937 (2004-01-01), Mahgerefteh et al.
patent: 2004/0109220 (2004-06-01), Han et al.
patent: 2007/0273958 (2007-11-01), Hirooka et al.
patent: 0817409 (1998-01-01), None
patent: 1171968 (2000-03-01), None
patent: EP 0 817 409 (1998-07-01), None
patent: 11-112425 (1999-04-01), None
patent: 11-112425 (1999-04-01), None
patent: 2001-111490 (2001-04-01), None
patent: 2001-111490 (2001-04-01), None
patent: 2002-541720 (2002-12-01), None
patent: WO 0060776 (2000-10-01), None
patent: 03/058312 (2003-07-01), None
M. Romagnoli, P. Franco, R. Corsini, and A. Shiffini, Time-domain Fourier otpiccs for polarization-mode dispersion compensation, Sep. 1, 1999, Optics Letters, vol. 24, Nov. 17, pp. 1197-1199.
Partial Translation and comments for a concise explanation of the relevance of “Non-linear fiber optics”, G.P. Agrawal, Yoshioka Shoten Publishing, 1997 Chapter 3 Group velocity dispersion.
“1.28 Tbit/s-70 km OTDM transmission using third and fourth order simultaneous dispersion compensation with a phase modulator” Masataka Nakazawa, Takashi Yamamoto, and Kohichi R. Tamura NTT Network Innovation Laboratories.
Abstract JP patent No. JP2002541720T Dec. 3, 2002.
“Non-linear fiber optics”, G.P. Agrawal, Yoshioka Shoten Publishing, 1997 Chapter 3 Group velocity dispersion.
M. D. Pelusi, Y. Matsui and A. Suzuki, “Phase Modulation of Stretched Optical Pulses for Suppression of Third-Order Dispersion Effects in Fiber Transmission”, Electron. Lett. vol. 34, pp. 1675-1677 (1998).
M. D. Pelusi, Y. Matsui and A. Suzuki, “Fourth-order Dispersion Suppression of Ultrashort Optical Pulses by Second-order Dispersion and Cosine Phase Modulation”, Opt. Lett. vol. 25, pp. 296-298 (2000).
T. Yamamoto and M. Nakazawa, “Third- and Fourth-order Active Dispersion Compensation with a Phase Modulatro in a Terabit-per-second Optical Time-Division Multiplexed Transmission”, Opt. Lett. vol. 26, pp. 647-649 (2001).
Hirooka Toshihiko
Nakazawa Masataka
Japan Science and Technology Agency
Lowe Hauptman & Ham & Berner, LLP
Ngo Tanya
Vanderpuye Ken N
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