An easy packaging hybrid optical element in grating based WDM application

Hsiao Chin Lan, Chao Chia Cheng, Chih Ming Wang, Jenq Yang Chang

Research output: Contribution to journalConference articlepeer-review


We developed a new optical element which integrates an off-axis diffractive grating and an on-axis refractive lens surface in a prism. With this optical element, the alignment tolerance can be improved by manufacturing technology of the grating based WDM device and is practicable for mass production. An 100-GHz 16-channel DWDM device which includes this optical element has been designed. Ray tracing and beam propagation method (BPM) simulations showed good performance on the insertion loss of 2.91±0.53dB and the adjacent cross talk of 58.02dB. The tolerance discussion for this DWDM device shows that this optical element could be practically achieved by either injection molding or the hot embossing method.

Original languageEnglish
Article number587704
Pages (from-to)1-7
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2005
EventOptomechanics 2005 - San Diego, CA, United States
Duration: 3 Aug 20054 Aug 2005


  • Grating
  • Grism
  • WDM


Dive into the research topics of 'An easy packaging hybrid optical element in grating based WDM application'. Together they form a unique fingerprint.

Cite this