Noninterferometric optical phase-shifter module in phase-shifted optical quantization

2009 ◽  
Vol 48 (3) ◽  
pp. 034301 ◽  
Author(s):  
Xin Fu
Keyword(s):  
Phase Shifter ◽  
Optical Phase ◽  
Optical Quantization

Mid-infrared Non-volatile Compact Optical Phase Shifter Based on Ge2Sb2 Te5

2020 ◽  
Author(s):  
Yuto Miyatake ◽  
Chong Pei Ho ◽  
Prakash Pitchappa ◽  
Ranjan Singh ◽  
Kotaro Makino ◽  
...  
Keyword(s):  
Phase Shifter ◽  
Mid Infrared ◽  
Optical Phase

scholarly journals Design of a Compact Low-Loss Phase Shifter Based on Optical Phase Change Material

2019 ◽  
Vol 31 (21) ◽  
pp. 1757-1760 ◽  
Author(s):  
Nikhil Dhingra ◽  
Junchao Song ◽  
Geetika J. Saxena ◽  
Enakshi K. Sharma ◽  
B. M. A. Rahman
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Phase Shifter ◽  
Low Loss ◽  
Optical Phase ◽  
Change Material

scholarly journals Grating Lobe-Free Beam Steering through Optical Phase Array Using Phase-Compensated Two Index-Mismatched Silicon Wires-Based Emitters

2020 ◽  
Vol 10 (4) ◽  
pp. 1225
Author(s):  
Rong-An Zhang ◽  
Ting-Sheng Lin ◽  
Wai-Ting Liu ◽  
Shih-Hsiang Hsu ◽  
Che-Chang Chang
Keyword(s):  
Phase Shifter ◽  
Beam Steering ◽  
Thermal Control ◽  
Phase Shifters ◽  
Phase Array ◽  
Optical Phase ◽  
Grating Lobe ◽  
Half Wavelength ◽  
Beam Formation ◽  
Free Beam

The beam formation can be treated as the diffraction pattern. A 1-D light detection and ranging beam steering could be derived through a phase shifter array using Rayleigh–Sommerfeld Diffraction, which is then utilized to demonstrate grating lobe-free beam steering from the optical phase array emitter with half-wavelength pitches. The half-wavelength pitch cannot demonstrate beam formation without any evanescent coupling blocking between emitters. Here, two index-mismatched silicon wires in the emitter array are proposed by the optical phase compensation through waveguide width adjustment, to avoid the complex and addressable thermal control on the phase shifters. Moreover, the same output optical waveguide mode needs to be further considered to demonstrate the grating lobe-free beam steering. In order to get the adiabatic connection between two different pitches between the phase shifter and emitter, an optical path equalization will also be applied.

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