Suppression of polarization dependence in the design of an arrayed-waveguide grating with photodefinable polyimide

• Published in: Optical materials Vol. 21; no. 1; pp. 531 - 534
• Main Authors: Ryong Park, Soon, O, Beom-hoan, Jeong, Jaewan, Gol Lee, Seung, Hang Lee, El
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 2003; Elsevier Science
• Subjects: Applied sciences; Arrayed waveguide grating; AWG; Birefringence; Circuit properties; Dispersion; Electric, optical and optoelectronic circuits; Electronics; Exact sciences and technology; Integrated optics. Optical fibers and wave guides; Optical and optoelectronic circuits; Optical waveguides and couplers; Polarization; Polymer; Waveguide; 42.79 Gn; AWG; Polarization; 77.22.E; Arrayed waveguide grating; 42.82.E; Birefringence; Polymer; Waveguide; 42.15.E; Dispersion; Theoretical study; Optical polarization; Optical waveguide; TM mode; TE mode
• ISSN: 0925-3467; 1873-1252
• DOI: 10.1016/S0925-3467(02)00195-7

We report on an effective means of suppressing polarization dependence in the design of an arrayed waveguide grating (AWG) made of photodefinable polyimide. The polarization dependence of the arrayed-waveguide grating device is excellently suppressed by controlling the grating order (
m) for a given refractive index difference between TE- and TM-modes within polyimide. The transmission characteristics of two AWG’s for two grating orders,
m=70 and 90, show wavelength shift of 5.04 nm and nearly zero, respectively, strongly supporting and confirming the method that we have identified for the birefringence suppression.