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Active sorting of orbital angular momentum states of light with a cascaded tunable resonator.


ABSTRACT: The orbital angular momentum (OAM) of light has been shown to be useful in diverse fields ranging from astronomy and optical trapping to optical communications and data storage. However, one of the primary impediments preventing such applications from widespread adoption is the lack of a straightforward and dynamic method to sort incident OAM states without altering the states. Here, we report a technique that can dynamically filter individual OAM states and preserve the incident OAM states for subsequent processing. Although the working principle of this technique is based on resonance, the device operation is not limited to a particular wavelength. OAM states with different wavelengths can resonate in the resonator without any additional modulation other than changing the length of the cavity. Consequently, we are able to demonstrate a reconfigurable OAM sorter that is constructed by cascading such optical resonators. This approach does not require specially designed components and is readily amenable to integration into potential applications.

SUBMITTER: Wei S 

PROVIDER: S-EPMC6987156 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Active sorting of orbital angular momentum states of light with a cascaded tunable resonator.

Wei Shibiao S   Earl Stuart K SK   Lin Jiao J   Kou Shan Shan SS   Yuan Xiao-Cong XC  

Light, science & applications 20200128


The orbital angular momentum (OAM) of light has been shown to be useful in diverse fields ranging from astronomy and optical trapping to optical communications and data storage. However, one of the primary impediments preventing such applications from widespread adoption is the lack of a straightforward and dynamic method to sort incident OAM states without altering the states. Here, we report a technique that can dynamically filter individual OAM states and preserve the incident OAM states for  ...[more]

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