M. Kawahara

1.5 μm band efficient broadband wavelength conversion by difference frequency generation in a periodically domain-inverted LiNbO3 channel waveguide

Chang Qing Xu, Hideaki Okayama, M. Kawahara · Applied Physics Letters · 1993 · 121 citations

Photonics, Engineering, Wavelength Conversion +6

Optical frequency conversions in nonlinear medium with periodically modulated linear and nonlinear optical parameters

Chang‐Qing Xu, Hideaki Okayama, M. Kawahara · IEEE Journal of Quantum Electronics · 1995 · 52 citations

Optical Materials, Engineering, Nonlinear Optics +22

Prototype 32 × 32 optical switch matrix

Hideaki Okayama, M. Kawahara · Electronics Letters · 1994 · 34 citations

Photonics, Optical Materials, Engineering +13

Low drive voltage Y-branch digital optical switch

Hideaki Okayama, T. Ushikubo, M. Kawahara · Electronics Letters · 1991 · 25 citations

Photonics, Electrical Engineering, Engineering +8

Reduction of voltage-length product for Y-branch digital optical switch

Hideaki Okayama, M. Kawahara · Journal of Lightwave Technology · 1993 · 25 citations

Engineering, Vlsi Design, Optical Transmission System +16