Title :
A holographic waveguide microlens array for surface-normal optical interconnects
Author :
Tang, S. ; Li, T. ; Li, F. ; Zhou, C. ; Chen, R.T.
Author_Institution :
Radiant Res. Inc., Austin, TX, USA
Abstract :
We present an array of holographic focusing lenses for surface normal optical interconnects. The profile-mismatch-induced coupling problem between input lasers and high-speed photodetectors is solved by employing a holographic microlens array. The holographic microlens array demonstrated has l-mm focal length at the wavelength of 632.8 mm, with a lens-to-lens separation of 0.58 mm. The measured 3-dB focal spot size is determined to be 15 μm×14 μm. The method for designing and recording a substrate mode surface-normal holographic lens array with different recording and readout wavelengths is also presented.
Keywords :
high-speed optical techniques; holographic optical elements; lenses; multiprocessor interconnection networks; optical computing; optical couplers; optical focusing; optical interconnections; optical waveguides; photodetectors; substrates; 0.58 mm; 14 mum; 15 mum; 632.8 nm; focal length; focal spot size; high-speed photodetectors; holographic focusing lenses; holographic microlens array; holographic waveguide microlens array; input lasers; lens-to-lens separation; profile-mismatch-induced coupling; readout wavelengths; substrate mode surface-normal holographic lens array; surface-normal optical interconnects; Holographic optical components; Holography; Lenses; Microoptics; Optical arrays; Optical coupling; Optical interconnections; Optical surface waves; Optical waveguides; Surface waves;
Journal_Title :
Photonics Technology Letters, IEEE
