Exact analytical design method for paraxial chromatic correction in axis-symmetric optical systems

2009 ◽  
Author(s):  
B. A. Hristov
Keyword(s):  
Design Method ◽  
Optical Systems ◽  
Analytical Design

scholarly journals Nano-imprinted subwavelength gratings as polarizing beamsplitters

2021 ◽  
Vol 17 (1) ◽  
Author(s):  
Julian Wüster ◽  
Yannick Bourgin ◽  
Patrick Feßer ◽  
Arne Behrens ◽  
Stefan Sinzinger
Keyword(s):  
Nanoimprint Lithography ◽  
Optical Measurement ◽  
Design Method ◽  
Optical Systems ◽  
Surface Metrology ◽  
Measurement Systems ◽  
Common Path ◽  
Dielectric Coatings ◽  
Subwavelength Gratings ◽  
Wide Range

AbstractPolarizing beamsplitters have numerous applications in optical systems, such as systems for freeform surface metrology. They are classically manufactured from birefringent materials or with stacks of dielectric coatings. We present a binary subwavelength-structured form-birefringent diffraction grating, which acts as a polarizing beamsplitter for a wide range of incidence angles −30∘…+30∘. We refine the general design method for such hybrid gratings. We furthermore demonstrate the manufacturing steps with Soft-UV-Nanoimprint-Lithography, as well as the experimental verification, that the structure reliably acts as a polarizing beamsplitter. The experimental results show a contrast in efficiency for TE- and TM-polarization of up to 1:18 in the first order, and 34:1 in the zeroth order. The grating potentially enables us to realize integrated compact optical measurement systems, such as common-path interferometers.

Reply to “Comments on ‘An Analytical Design Method for a Novel Dual-Band Unequal Coupler With Four Arbitrary Terminated Resistances’”

2018 ◽  
Vol 65 (5) ◽  
pp. 4424-4427 ◽  
Author(s):  
Yongle Wu ◽  
Shao Yong Zheng ◽  
Sai-Wing Leung ◽  
Yuanan Liu ◽  
Quan Xue
Keyword(s):  
Design Method ◽  
Dual Band ◽  
Analytical Design

Analytical Design Method and Implementation of Broadband 4 x 4 Nolen Matrix

2021 ◽  
pp. 1-1
Author(s):  
Ye Yang ◽  
Yu Fei Pan ◽  
Shao Yong ◽  
Wonbin Hong ◽  
Wing Shing Chan
Keyword(s):  
Design Method ◽  
Analytical Design

Analytical Design of Fractional Order Proportional Integral Controller for Spherical Tank

2014 ◽  
Vol 573 ◽  
pp. 279-284 ◽  
Author(s):  
Neenu Elizabeth Cherian ◽  
K. Sundaravadivu
Keyword(s):  
Fractional Order ◽  
Dead Time ◽  
Transfer Functions ◽  
Design Method ◽  
Analytical Design ◽  
Proportional Integral ◽  
First Order ◽  
Spherical Tank ◽  
Proportional Integral Controller ◽  
Fopi Controller

This paper presents an analytical design method for fractional order proportional integral (FOPI) controller for the spherical tank which is modelled as a first order plus dead time (FOPDT) process. The design is based on the Bode’s ideal transfer function and fractional calculus. By using frequency domain, the proposed FOPI tuning rules are directly derived for a generalized first order plus dead time process and then applied to the transfer functions obtained at various operating points of the spherical tank. The performance of the designed FOPI controller is compared with the conventional integer order proportional integral derivative (IOPID) controller in simulation.

Analytical Design Method of Multiway Dual-Band Planar Power Dividers With Arbitrary Power Division

2010 ◽  
Vol 58 (12) ◽  
pp. 3832-3841 ◽  
Author(s):  
Yongle Wu ◽  
Yuanan Liu ◽  
Quan Xue ◽  
Shulan Li ◽  
Cuiping Yu
Keyword(s):  
Design Method ◽  
Dual Band ◽  
Analytical Design ◽  
Power Dividers ◽  
Arbitrary Power
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