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Four-wave mixing in nonlinear waveguides and waveguide arrays for optical phase conjugationFormat | Member Price | Non-Member Price |
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Paper Abstract
Phase-conjugate four-wave mixing in a waveguide has many advantages over that in a bulk medium due to the
waveguiding effect . It is also relatively easy to introduce an optical gain in the waveguide to amplify the weak signal.
For sufficient image resolution, a multimode waveguide with a large number of guided modes is needed. For high
fideIiy image replication, the nonlinear phase conjugate efficiency has to be mode-independent. These requirements
are examined for two types of multimode waveguides: the cylindrical fiber waveguide without carrier diffusion and
the rectangular semiconductor waveguide with carrier diffusion. In the fiber waveguide, the cylindrical geometry and
the tensorial nature of makes the nonlinear coupling coefficient quite mode-dependent. In the semiconductor
waveguide, carrier diffusion severely limits the efficiency of coupling the power in a particular pump mode to other
modes in the conjugate signal. The existence of a gain will further aggravate these problems. In order to avoid
these problems while maintaining the advantages of the waveguiding effect, we propose to use an array of single-mode
waveguides. In this case, the only requirements are that the elements are identical and equally pumped and that
there is no cross-talk between individual elements. A high-fidelity signal can be generated with an optical gain for
amplification. In addition, the signal beam can be steered by changing the incident direction of one of the pump
beams.
Paper Details
Date Published: 1 May 1990
PDF: 9 pages
Proc. SPIE 1220, Nonlinear Optics, (1 May 1990); doi: 10.1117/12.18303
Published in SPIE Proceedings Vol. 1220:
Nonlinear Optics
Robert A. Fisher; John F. Reintjes, Editor(s)
PDF: 9 pages
Proc. SPIE 1220, Nonlinear Optics, (1 May 1990); doi: 10.1117/12.18303
Show Author Affiliations
Jia-ming Liu, Univ. of California/Los Angeles (United States)
Thomas B. Simpson, Jaycor (United States)
Published in SPIE Proceedings Vol. 1220:
Nonlinear Optics
Robert A. Fisher; John F. Reintjes, Editor(s)
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