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Methods for robust channel switching of widely-tunable sampled-grating distributed bragg reflector lasers

  • US 6,868,100 B2
  • Filed: 12/04/2002
  • Issued: 03/15/2005
  • Est. Priority Date: 12/04/2001
  • Status: Expired due to Term
First Claim
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1. A method of switching an output wavelength of a multi-section laser containing two or more current-controlled, tunable, wavelength-selective elements, comprising:

  • (a) selecting front and back mirror currents for the laser to tune the laser'"'"'s output to a wavelength of a target channel based on a feedback signal combined with a mode map, wherein the feedback signal results from a selection of one or more sets of tuning currents intermediate between those of an initial channel and the target channel, and the mode map comprises a two-dimensional grouping of the front and back mirror currents corresponding to cavity modes of the laser as measured at an earlier time.

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