Optical: systems and elements – Optical amplifier
Reexamination Certificate
2007-08-21
2007-08-21
Keith, Jack (Department: 3663)
Optical: systems and elements
Optical amplifier
C356S334000
Reexamination Certificate
active
11263289
ABSTRACT:
A quasi-monochromatic light beam carrier for a particular telecommunication channel is likely to experience drift because of age, temperature, or other factors, and may cause the centroid wavelength of the carrier to shift. Temperature adjustments by wavelength lockers to compensate for drift on one channel may affect the performance of other channels. Embodiments of the present invention couple a quasi-monochromatic light beam through a substrate-based grating, diffract the light beam from the edge of the substrate to free space, and detect the light beam from free space at a position detector to determine the centroid wavelength based on a position of the light beam incident on the detector. The diffracted light beam may be reflected within the substrate a number of times prior to exiting the substrate towards the detector.
REFERENCES:
patent: 3664741 (1972-05-01), Bonnet et al.
patent: 3922089 (1975-11-01), Danielsson et al.
patent: 3975104 (1976-08-01), Munk
patent: 4011016 (1977-03-01), Layne et al.
patent: 4205229 (1980-05-01), Frosch et al.
patent: 4225233 (1980-09-01), Ogan
patent: 4294508 (1981-10-01), Husbands
patent: 4885460 (1989-12-01), Bartholomew
patent: 5149963 (1992-09-01), Hassler, Jr.
patent: 5285255 (1994-02-01), Baranne et al.
patent: 5564832 (1996-10-01), Ball et al.
patent: 5644396 (1997-07-01), Hopkins, II
patent: 5892581 (1999-04-01), Sakaide et al.
patent: 5923420 (1999-07-01), Iwasaki
patent: 6137609 (2000-10-01), Scheps
patent: 6208797 (2001-03-01), Vanderhoof et al.
patent: 6222670 (2001-04-01), Ryu et al.
patent: 6275317 (2001-08-01), Doerr et al.
patent: 6411424 (2002-06-01), Raj
patent: 6526071 (2003-02-01), Zorabedian et al.
patent: 6608847 (2003-08-01), Zhang et al.
patent: 6628682 (2003-09-01), Takehisa et al.
patent: 6717682 (2004-04-01), Kathman et al.
patent: 6795459 (2004-09-01), Tsai
patent: 6919963 (2005-07-01), Park
patent: 6937628 (2005-08-01), Tatsuno et al.
patent: 2002/0003619 (2002-01-01), Ahlers et al.
patent: 2002/0126345 (2002-09-01), Green et al.
patent: 2002/0131042 (2002-09-01), Iwama
patent: 2002/0145777 (2002-10-01), Bock et al.
patent: 2003/0012230 (2003-01-01), Hopkins et al.
patent: 2003/0016707 (2003-01-01), McDonald et al.
patent: 2003/0057351 (2003-03-01), Tsai
patent: 2003/0063633 (2003-04-01), Zhang et al.
patent: 2004/0101016 (2004-05-01), McDonald et al.
patent: 2005/0078717 (2005-04-01), Tuganov et al.
patent: 2005/0135773 (2005-06-01), McDonald
patent: 2005/0147134 (2005-07-01), McDonald
patent: 2006/0039009 (2006-02-01), Kiesel et al.
Goto, R.; Nishizawa, N.; Goto, T.; Mori, M.; Yamane, K.; Intermodal injection locking of 1.55 μm Fabry-Perot LD using four-wave mixing. Electronics Letters. vol. 35, Issue 14, Jul. 8, 1999 pp. 1181-1182.
S. W. Harun, P. Poopalan, and H. Ahmad. Gain Enhancement in L-Band EDFA Through a Double-Pass Technique. IEEE Photonics Technology Letters, vol. 14, No. 3, Mar. 2002. 296-297.
Blakely , Sokoloff, Taylor & Zafman LLP
Diacou Ari M.
Intel Corporation
Keith Jack
LandOfFree
Coarse spectrometer with a grating does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Coarse spectrometer with a grating, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coarse spectrometer with a grating will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3899936