Experimental Demonstration of Birefringence Compensation Using Angled Star Couplers in Silica-Based Arrayed Waveguide Grating | Zendy

Xiang Xia | Zendy; Jun Zou | Zendy; Tingting Lang | Zendy; Jian-Jun He | Zendy

Open Access

Experimental Demonstration of Birefringence Compensation Using Angled Star Couplers in Silica-Based Arrayed Waveguide Grating

Author(s) -

Xiang Xia,

Jun Zou,

Tingting Lang,

Jian-Jun He

Publication year - 2012

Publication title -

ieee photonics journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.725

H-Index - 73

eISSN - 1943-0655

pISSN - 1943-0647

DOI - 10.1109/jphot.2012.2229974

Subject(s) - engineered materials, dielectrics and plasmas , photonics and electrooptics

A birefringence compensation technique based on angled star couplers in arrayed waveguide grating (AWG) is experimentally investigated in silica-on-silicon waveguide with B–Ge codoped upper cladding. A 16-channel AWG with 100-GHz channel spacing is designed and fabricated. The star couplers are designed according to Rowland circle construction with an oblique incident/diffraction angle. Five different polarization compensation parameters corresponding to different incident/diffraction angles are employed to investigate the stress-induced birefringence. The experimental results confirm that the polarization-dependent wavelength shift $(\hbox{PD}\lambda)$ can be tuned by varying the incident/diffraction angle at the star couplers, and a birefringence-free AWG can be achieved without any additional fabrication process.

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