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Single-Mode Wavelength Division Demultiplexer for Bit-Parallel Fiber Optic Networks

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Final rept. 1 Aug 2000-31 Jan 2003

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In summary, this SBIR program was highly successful, and a few modules were completely packaged for delivery to the JPL labs for further testing. We contacted the JPL team at a later stage. However, it appears that JPL team was not interested in taking delivery of these modules. However, a set of 32-channel WDMWDDM modules were successfully used to demonstrate a high throughput bit-serial data transfers between two computers for another program. The main achievements of this program are 1 The specifications, and finalized the device structure of the WDDM for bit-parallel computer architecture have been established. 2 A bulk ruled reflection high-order Echelle grating was employed to realize high dispersion, to achieve high diffraction efficiency within a wide spectral range, and low polarization dependent loss. A diffraction limited triplet lens was designed to serve for both of collimation and focusing simultaneously, so the device cost and size were decreased dramatically. 3 We also designed a 33-channel fiber array with non-uniform channel spacing to compensate the nonlinear effect of angular dispersion. 4 Graded index lensed fibers were designed and fabricated to expand the mode field diameter, and then to increase passband and alignment tolerance. 5 A thorough thermal analysis and optimization has been performed to achieve a thermalized WDM design and packaging. 6 In order to further broaden the passband to meet the specification, a 40 channel. 7 100 GHz interleaver-based DWDM were designed and a prototype was built.

Subject Categories:

  • Electrooptical and Optoelectronic Devices
  • Fiber Optics and Integrated Optics
  • Radiofrequency Wave Propagation
  • Radio Communications

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