A parallel measurement approach is presented to analyze multiple linear polarization (LP) modes using the spatial light modulator (SLM). The hologram loading onto SLM is generated by conjugate symmetric extension Fourier computer-generated holography. The mode array containing different LP modes is encoded into the hologram, which records the array amplitude and phase information. Demodulated by the SLM, the modal content and their relative powers of tested light are obtained by measuring the intensity and position of the demodulated light spot in the diffracted field. The experimental system is established and LP modes of single and few-mode step-index fibers are measured. Our method has some advantages, including simple optical setup and applicability of the higher-order modes detection. It is promising for the mode analysis of high-power fiber lasers and optical communication.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither SPIE nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the SPIE website.