Polarization-insensitive wavelength filters by birefringence compensation of vertical couplers

Journal Article · Wed Jan 31 23:00:00 EST 1996 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.116240· OSTI ID:278624

Deri, R J; Emanuel, M A; Patterson, F G; Dijaili, S P; Nguyen, L T ^[1]

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1. Lawrence Livermore National Laboratory, PO Box 808, Livermore, California 94550 (United States)

We demonstrate a novel birefringence compensation technique to reduce the polarization dependence of AlGaAs directional coupler wavelength filters operating in the 770 to 970 nm wavelength range. By using a multiple quantum well structure to compensate intrinsic waveguide birefringence, we fabricated vertical coupler filters with polarization-dependent wavelength shifts from 0.1 to 2 nm, significantly less than those achieved for conventional devices. Experimental results show that both the filter wavelength and insertion loss can be rendered polarization insensitive by this technique. {copyright} {ital 1996 American Institute of Physics.}

• Research Organization: Lawrence Livermore National Laboratory
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 278624
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 8 Vol. 68; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ARSENIDES
BIREFRINGENCE
DESIGN
FIBER OPTICS
GALLIUM ARSENIDES
OPTICAL COUPLERS
OPTICAL FILTERS
POLARIZATION
QUANTUM WELLS