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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 16 — Aug. 1, 2011
  • pp: 15380–15387

CWDM based HDMI interconnect incorporating passively aligned POF linked optical subassembly modules

Hak-Soon Lee, Sang-Shin Lee, and Yung-Sung Son  »View Author Affiliations


Optics Express, Vol. 19, Issue 16, pp. 15380-15387 (2011)
http://dx.doi.org/10.1364/OE.19.015380


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Abstract

A four-channel transmitter OSA (TOSA) and a receiver optical sub-assembly (ROSA) module were presented. They take advantage of a coarse WDM (CWDM) scheme, employing two types of VCSELs at 780 and 850 nm, where no wavelength filters are involved in the TOSA. The ROSA and TOSA were constructed through a fully passive alignment process using components produced by virtue of a cost effective plastic injection molding technique. In order to build a high quality optical HDMI interconnect, four channel optical links between these modules ware established via two graded-index plastic optical fibers (GI-POFs). The HDMI interconnect was thoroughly evaluated in terms of the alignment tolerance, the light beam propagation, and the data transmission capability. For the ROSA, the measured tolerance, as affected by the photodiode alignment, was ~45 μm and over 200 μm for the transverse and longitudinal directions, respectively. For the TOSA, the tolerance, which is mostly dependent upon the VCSEL alignment, was ~20 μm and more than 200 μm for the transverse and longitudinal directions, respectively. The beam profiles for the TOSA and ROSA were monitored to confirm their feasibility from the optical coupling perspective. A digital signal at 2.5 Gb/s was efficiently transmitted through the HDMI interconnect with a bit error ratio of below 10−16. A 1080p HDMI signal from a Blu-ray player was delivered through the interconnect to an LCD monitor and successfully displayed a high quality video.

© 2011 OSA

OCIS Codes
(200.4650) Optics in computing : Optical interconnects
(220.1140) Optical design and fabrication : Alignment
(230.0230) Optical devices : Optical devices
(080.2205) Geometric optics : Fabrication, injection molding
(140.7260) Lasers and laser optics : Vertical cavity surface emitting lasers

ToC Category:
Optics in Computing

History
Original Manuscript: June 28, 2011
Revised Manuscript: July 20, 2011
Manuscript Accepted: July 21, 2011
Published: July 26, 2011

Citation
Hak-Soon Lee, Sang-Shin Lee, and Yung-Sung Son, "CWDM based HDMI interconnect incorporating passively aligned POF linked optical subassembly modules," Opt. Express 19, 15380-15387 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-16-15380


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