Arbitrary chirped gratings that are very difficult to fabricate by photoresist process or electron beam lithography can be realized by a bent waveguide through a uniform periodic grating. The approximate condition that the system is equivalent to a big chirped grating is deduced. The curve function of bent waveguide can be got by resolving an integral equation. A novel binary chirped grating that could be used as an integrated optical component having combined functions of demultiplexer and focusing lens is also described. Coupled- mode theory is used to compute the efficiency of grating
Arbitrary chirped grating formed by one bent waveguide through a uniform periodic grating / Castagnolo, Beniamino; Rizzi, Maria; Xu, Zhene (PROCEEDINGS OF SPIE, THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING). - In: Diffractive and Holographic Device Technologies and Applications IV / [a cura di] Ivan Cindrich, Sing H. Lee. - STAMPA. - Bellingham, WA : SPIE, 1997. - ISBN 0-8194-2421-8. - pp. 272-279 [10.1117/12.274427]
Arbitrary chirped grating formed by one bent waveguide through a uniform periodic grating
Beniamino Castagnolo;Maria Rizzi;
1997-01-01
Abstract
Arbitrary chirped gratings that are very difficult to fabricate by photoresist process or electron beam lithography can be realized by a bent waveguide through a uniform periodic grating. The approximate condition that the system is equivalent to a big chirped grating is deduced. The curve function of bent waveguide can be got by resolving an integral equation. A novel binary chirped grating that could be used as an integrated optical component having combined functions of demultiplexer and focusing lens is also described. Coupled- mode theory is used to compute the efficiency of gratingI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
