Parametric optimization of fiber to waveguide coupler using Bragg gratings

Journal Article · Thu Aug 15 04:00:00 EDT 2019 · Optical and Quantum Electronics

DOI:https://doi.org/10.1007/S11082-019-1974-X· OSTI ID:22950173

Singh, Rukmani; Priye, Vishnu ^[1]

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1. Indian Institute of Technology (Indian School of Mines), Department of Electronics Engineering (India)

The uniform grating coupler which consists of two pairs of reflector layers in the substrate region has been proposed to couple the optical power from single mode fiber to standard 220 nm silicon-on-insulator waveguide. The efficiency of ≈ 79% in a broadband 3 dB bandwidth of ≈ 150 nm is achieved for uniform Bragg grating coupler devices. Further, by making a sequence of chirped and uniform grating, the power coupling efficiency of ≈ 98% at 1550 nm wavelength and 3 dB bandwidth of 35 nm is achieved. The importance and benefits of reflector layers along with its parametric optimization is thoroughly investigated for the calculation of optimum coupling efficiency. This research mainly focus on fiber-to-waveguide/waveguide-to-fiber coupling design. The major contribution of the research focuses on compact and efficient optical interconnection of coupler devices.

• OSTI ID: 22950173
• Journal Information: Optical and Quantum Electronics, Journal Name: Optical and Quantum Electronics Journal Issue: 8 Vol. 51; ISSN OQELDI; ISSN 0306-8919
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
DIFFRACTION GRATINGS
EFFICIENCY
EQUIPMENT
FIBERS
GRATINGS
INTEGRATED CIRCUITS
LAYERS
OPTICS
OPTIMIZATION
SILICON
SUBSTRATES
WAVEGUIDES
WAVELENGTHS