An optical symmetric cryptographic system with simultaneous encryption and transmission of binary data and secret key by using dual phase-shifting digital holography

2013 ◽  
Author(s):  
Sang Keun Gil ◽  
Seok Hee Jeon ◽  
Jong Rae Jung
Keyword(s):  
Binary Data ◽  
Digital Holography ◽  
Phase Shifting ◽  
Dual Phase ◽  
Secret Key ◽  
Cryptographic System

Optical encryption of binary data information with 2-step phase-shifting digital holography

2007 ◽  
Author(s):  
Sang Keun Gil ◽  
Hyun Joong Byun ◽  
Hyun Jin Lee ◽  
Seok Hee Jeon ◽  
Jong Rae Jeong
Keyword(s):  
Binary Data ◽  
Digital Holography ◽  
Phase Shifting ◽  
Optical Encryption

Parallel Phase-Shifting Digital Holography Capable of Simultaneously Capturing Visible and Invisible Three-Dimensional Information

2010 ◽  
Vol 6 (10) ◽  
pp. 472-478 ◽  
Author(s):  
Takashi Kakue ◽  
Kenichi Ito ◽  
Tatsuki Tahara ◽  
Yasuhiro Awatsuji ◽  
Kenzo Nishio ◽  
...  
Keyword(s):  
Digital Holography ◽  
Three Dimensional ◽  
Phase Shifting

Successive encryption and transmission with phase-shifting digital holography

2006 ◽  
Author(s):  
Sang Keun Gil ◽  
Seok Hee Jeon ◽  
Nam Kim ◽  
Jong Rae Jeong
Keyword(s):  
Digital Holography ◽  
Phase Shifting

Phase-shifting digital holography with an unknown reference beam

2021 ◽  
Author(s):  
Roghayeh Yazdani ◽  
Hamidreza Fallah
Keyword(s):  
Digital Holography ◽  
Phase Retrieval ◽  
Reference Beam ◽  
Phase Shifting ◽  
Retrieval Algorithm ◽  
Reference Field ◽  
Digital Holograms ◽  
Noisy Conditions ◽  
Phase Retrieval Algorithm

In digital holography, errors of the reference field degrade the quality of the reconstructed object field. In this paper, we propose an effective method in phase-shifting digital holography in which the reference field does not need to be known and perfect. The unknown complex amplitudes of both reference and object fields are derived simultaneously. The method employs only five digital holograms and a single execution of a phase retrieval algorithm. So, the required measurements and algorithm executions in this method are fewer than those in other methods; it suggests a simpler and faster method. The effectiveness of the suggested method is indicated by simulation, under noise-free and noisy conditions. Moreover, the capability of the method to extract full information about the phase singularities in both fields is demonstrated.

Sign in / Sign up

Export Citation Format

Share Document