Interlaced phased array optical grating

Details Interlaced phased array optical grating Interlaced phased array optical grating

G - Physics

02

B

G02B 27/44 (2006.01) G02B 6/34 (2006.01) H04J 14/02 (2006.01)

Patent

CA 2254385

Two or more phased array waveguides are arranged such that they are interlaced in parallel both connecting the same two star couplers. Each phased array focuses the output channels to a different location. The separation between the two focus points is determined by a constant difference in the length of each individual array. A shift can be controlled very precisely to produce overlapping passbands while keeping low excess crosstalk between adjacent channel. The overlapping passbands effectively create a broader passband with a substantially flat top shape.

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