US 6,983,091 B2
Method for writing a planar waveguide having gratings of different center wavelengths
Anders Grunnet-Jepsen, San Jose, Calif. (US); Alan E. Johnson, San Jose, Calif. (US); and John N. Sweetser, San Jose, Calif. (US)
Assigned to Intel Corporation, Santa Clara, Calif. (US)
Filed on Aug. 03, 2004, as Appl. No. 10/910,902.
Application 10/910902 is a division of application No. 10/205089, filed on Jul. 24, 2002.
Prior Publication US 2005/0008295 A1, Jan. 13, 2005
Int. Cl. G02B 6/34 (2006.01)
U.S. Cl. 385—37 8 Claims
OG exemplary drawing
 
1. A planar lightwave circuit (PLC), comprising:
a first grating having a first center wavelength, the first grating having a first effective refractive index and a grating spacing profile; and
a second grating having a second center wavelength, the second grating having a second effective refractive index different from that of the first grating and a grating profile that is substantially the same as that of the first grating, wherein the first and second gratings are formed in regions of the PLC that have different doping profiles.