Phase retardometer: a proposed device for measuring phase retardance

Abstract

The realization of a standard device for measuring phase retardance has been retarded by the lack of a simple underlying physical concept that can be formulated in a simple mathematical expression to provide quick, direct, and accurate results. A proposed device that meets these requirements and simple formulas for retardance measurements are presented.

Semi-Automated Sènarmont Method for Measurement of Small Retardation

“…In other words, the present formulation is applicable to the case of an incorrect quarter plate with an unknown phase difference. [22,23] A criticize was given by Kurzynowski et al [23] on Nagib's method [22] as one should rotate both the polarizer and the analyzer simultaneously to find the extinction of light. In Kurzynowski et al's method two successive rotation, one of which is for a normal Sènarmont method and the other for a reverse Sènarmont method -the specimen and the quarter wave plate are swapped and the polarizer is rotated -, is required.…”

Quarter wave retarders for optical communications

“…These devices can be used in optical communication as optical rotary dispersion and wave separation. A number of interesting work addressed quarter-wave retarders that can operate in certain region of the light spectrum [1][2][3][4][5][6][7][8]. In this paper, quarter-wave retarders are designed to operate in the C-band (λ=1520nm; 0.82 ev) and the L-band (λ=1620nm; 0.77 ev), such frequencies are of special interest in optical communications especially for DWDM.…”

Phase retarders for optical communications (C-band & L-band)

“…These devices are used in wave separation and optical rotary dispersion. Recently [3], a number of interesting work that addresses phase retarders are presented [4], these devices are designed to operate in certain region of the light spectrum [3], [4], [1], [2], [5], [6], [7], [8]. In this paper, phase retarders are designed to operate in the C-band (λ=1520nm; 0.82 ev) and the L-band (λ=1620nm; 0.77 ev), such frequencies are of special interest in optical communications especially for DWDM.…”