Optical communication method and apparatus

Optical communications – Optical repeater system – Specific optical waveguide

Reexamination Certificate

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C398S160000, C398S188000

Reexamination Certificate

active

08045862

ABSTRACT:
An optical amplification method and apparatus implemented using RZ-DPSK modulation or variants thereof and a deeply saturated semiconductor optical amplifier.

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patent: WO 00/41346 (2000-07-01), None
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Chi et al., “Optical Label Swapping And Packet Transmission Based on ASK/DPSK Orthogonal Modulation Formate in IP-Over WDM Networks”,Optical Fiber Communication Conference(OFC), vol. 2, Friday morning, Postconference Digest, Atlanta, GA, Mar. 23-28, 2003, pp. 792-794.
Yikai Su et al., “Wide Dynamic Range 10-Gb/s DPSK Packed Receiver Using Optical-Limiting Amplifiers”,IEEE Photonics Technology Letters, vol. 16, No. 1, Jan. 2004, pp. 296-298.
P. S. Cho et al., “Suppression Of Cross-Gain Modulation In SOA Using RZ-DPSK Modulation Format”,IEEE Photonics Technology Letters, vol. 15, No. 1, Jan. 2003, pp. 162-164.
K. Yiannopoulos et al., “Repetition Rate Upgrade For Optical Sources”,IEEE Photonics Technology Letters, vol. 15, No. 6, Jun. 2003, pp. 861-863.
X. Wei et al., Optical π/2-DPSK And Its Tolerance To Filtering And Polarization-Mode Dispersion,IEEE Photonics Technology Letters, vol. 15, No. 11, Nov. 2003, pp. 1639-1641.
X. Liu et al., “Transmission of an ASK-Labeled RZ-DPSK Signal And Label Erasure Using A Saturated SOA”,IEEE Photonics Technology Letters, vol. 16, No. 6, Jun. 2004, pp. 1594-1596.
X. Wei et al., “10-Gb/s RZ-DPSK Transmitter Using A Saturated SOA As A Power Booster and Limiting Amplifier”,IEEE Photonics Technology Letters, vol. 16, No. 6, Jun. 2004, pp. 1582-1584.

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