Low-Cost Athermal Wavelength-Locker Integrated in a Temperature-Tuned Single-Frequency Laser Package

D. A. Ackerman, K. M. Paget, L. F. Schneemeyer, L. J.P. Ketelsen, F. W. Warning, O. Sjolund, J. E. Graebner, A. Kanan, V. R. Raju, L. E. Eng, E. D. Schaeffer, P. Van Emmerik

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


A package-integrated, compact, low-cost, athermal wavelength locker is introduced. It uses a novel etalon material, Schnaelite, to reduce environmental temperature sensitivity well over an order of magnitude compared to commercially available fused silica based lockers. Thermo-optical properties of temperature insensitive etalons are presented. Results demonstrating frequency stability of devices incorporating Schnaelite etalon based discriminators show optical frequency shifts below 1 GHz for large changes in case and laser temperature. This enabling technology promotes future small form-factor, low power consumption, multichannel laser sources.

Original languageEnglish
Pages (from-to)166-171
Number of pages6
JournalJournal of Lightwave Technology
Issue number1
StatePublished - Jan 2004


  • Distributed feedback lasers
  • Fabry-Perot interferometers
  • Frequency stability
  • Laser stability
  • Material science
  • Semiconductor lasers


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