Multimode optical demultiplexer for DWDM with liquid crystal enabled functionalities

Ming Jay Huang, Ru Pin Pan, Chia Rong Sheu, Yu Ping Lan, Yi Fan Lai, Ci Ling Pan

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


We have developed a liquid-crystal-based multimode optical demultiplexer (DEMUX) with additional functionalities such as switching and power equalization. Demultiplexing 16-channel 100-GHz-spaced signals into a 62.5-μm multimode-fiber array is demonstrated. The central wavelength of each channel is designed according to the International Telecommunication Union grid. Adjacent channel crosstalk is less than - 30 dB. The average 1- and 3-dB passbands of the DEMUX are 12.5 and 22.5 GHz, respectively. A maximum extinction ratio of 16.2 dB is achieved. Different channels can be switched with rise and fall times of ∼10 and ∼70 ms, respectively. The outputs of the channels are equalized to -65 dBm. The variation between different channels reduced from ∼10 dB to less than 0.5 dB.

Original languageEnglish
Pages (from-to)2254-2256
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number10
Publication statusPublished - 2004 Oct

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


Dive into the research topics of 'Multimode optical demultiplexer for DWDM with liquid crystal enabled functionalities'. Together they form a unique fingerprint.

Cite this