Optical: systems and elements – Optical amplifier – Optical fiber
Reexamination Certificate
2006-10-05
2008-12-23
Bolda, Eric (Department: 3663)
Optical: systems and elements
Optical amplifier
Optical fiber
C372S029016, C356S477000
Reexamination Certificate
active
07468832
ABSTRACT:
A system and method for combining plural low power light beams into a coherent high power light beam by means of a diffractive optical element operating as both a beam combiner and beam sampler. An oscillation source transmits a master signal that is split into plural beams propagating at a common wavelength. Each beam is phase locked by a corresponding phase modulator according to a phase correction signal. The beams are directed through a fiber array to the diffractive optical element to allow efficient coherent combination of the beams at a desired diffraction order. The diffractive optical element includes a periodic sampling grating for diffracting a low power sample beam representative of the combined beam. A phase detection stage detects phases of constituent beams in the sample beam from which the phase correction signals are derived and fed back to the phase modulators. The diffractive optical element may be further modified to collimate beams diverging from the fiber array and to focus the sample beam onto a phase detector.
REFERENCES:
patent: 6192062 (2001-02-01), Sanchez-Rubio et al.
patent: 6208679 (2001-03-01), Sanchez-Rubio et al.
patent: 6327292 (2001-12-01), Sanchez-Rubio et al.
patent: 6366356 (2002-04-01), Brosnan et al.
patent: 6697192 (2004-02-01), Fan et al.
patent: 6708003 (2004-03-01), Wickham et al.
patent: 7199924 (2007-04-01), Brown et al.
patent: 7233442 (2007-06-01), Brown et al.
Shay, T.M. & Benham, V. “First Experimental Demonstration of Phase Locking of Optical Fiber Arrays by RF Phase Modulation”.Proceedings of SPIEvol. 5550. pp. 313-319 (2004).
Komine Hiroshi
Rice Robert R.
Rothenberg Joshua E.
Wickham Michael G.
Bolda Eric
Northrop Grumman Corporation
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