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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 16, Iss. 4 — Apr. 1, 1998
  • pp: 625–

Polarization Independent InP WDM Multiplexer/Demultiplexer Module

Emilio Gini, Werner Hunziker, and Hans Melchior

Journal of Lightwave Technology, Vol. 16, Issue 4, pp. 625- (1998)


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Abstract

We report the design, fabrication, packaging, and characterization of a polarization independent integrated optical InP multiplexer/demultiplexer module. The device is based on a vertically etched diffractive grating and separates four channels with 4 nm spacing in the 1.55 \mum window. An n/n+-InP layer structure with very low birefringence results in a shift of the passbands between transverse electric (TE) and transverse magnetic (TM) polarization of less than 0.1 nm. With a self-aligned flip-chip mounting technique light is optically coupled from the input and output waveguides to an array of lensed single mode fibers with a coupling efficiency of more than 80%. The packaging includes temperature control that allows fine tuning of the channel passbands over 5 nm. Optical crosstalk is always better than {-}17 dB and fiber to fiber losses of 15 dB are achieved. The module has been successfully implemented in a 4\;\times\;2.5 Gb/s WDM transmission system.

[IEEE ]

Citation
Emilio Gini, Werner Hunziker, and Hans Melchior, "Polarization Independent InP WDM Multiplexer/Demultiplexer Module," J. Lightwave Technol. 16, 625- (1998)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-16-4-625

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