Optical: systems and elements – Optical frequency converter – Parametric oscillator
Reexamination Certificate
2008-06-17
2008-06-17
Sanghavi, Hemang (Department: 2874)
Optical: systems and elements
Optical frequency converter
Parametric oscillator
C359S326000
Reexamination Certificate
active
07388710
ABSTRACT:
An optical parametric amplifier of the invention comprises a nonlinear amplification section to which a signal light and a pump light are injected via a coupler. The nonlinear amplification section is constructed by connecting in multiple stages a plurality of polarization retaining highly nonlinear optical fibers (HNLFs) having mutually different zero-dispersion wavelengths and dispersion slopes. The zero-dispersion wavelengths of the HNLFs are on the short wavelength side of a pump light wavelength, and are shorter towards the output side HNLF. Furthermore, the arrangement is set such that the dispersion slopes of the HNLFs become steeper towards the output side HNLF. As a result, it is possible to realize an optical parametric amplifier that is high gain and broadband.
REFERENCES:
patent: 6424774 (2002-07-01), Takeda et al.
patent: 2002/0015219 (2002-02-01), Islam
patent: 2000-180907 (2000-06-01), None
patent: 2002-508601 (2002-03-01), None
patent: 99/49580 (1999-09-01), None
Wong, K.K.Y. et al.: “Continuous-Wave Fiber Optical Parametric Amplifier With 60-dB Gain Using a Novel Two-Segment Design”, IEEE Photonics Technology Letters IEEE USA, vol. 15, No. 12, Dec. 2003, pp. 1707-1709.
Provino, L. et al.: “Broadband and flat parametric amplifiers with a multisection dispersion-tailored nonlinear fiber arrangement”, Journal of the Optical Society of America B(Optical Physics) Opt. Soc. America USA, vol. 20, No. 7, Jul. 2003, pp. 1532-1537.
Ho, M.C. et al.: “Optical parametric amplification in a high-nonlinearity fiber” Technical Digest. Summaries of Papers Presented at the Conference on Lasers and Electro-Optics. Conference Edition 1998 Technical Digest Series, vol. 6, 1998, Opt. Soc. America Washington, DC, USA, pp. 496-497.
Tang, R. et al.: “Micarostructure-fibre-based optical parametric amplifier with gain slope of ˜200 dB/W/km in the telecom range”, Electronics Letters, IEE Stevenage, GB, vol. 39, No. 2, Jan. 23, 2003, pp. 195-196.
Hansryd, J. et al.: “Fiber-based Optical Parametric Amplifiers and Their Applications”, IEEE Journal of Selected Topics in Quantum Electronics, IEEE Service Center, Piscataway, NJ, US, vol. 8, No. 3, May 2002.
Extended European Search Report mailed on Jun. 27, 2007 issued with respect to the corresponding European Patent Application No. 06013477.2-2205.
Ono Shunsuke
Watanabe Shigeki
Fujitsu Limited
Sanghavi Hemang
Staas & Halsey , LLP
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