Broadly-tunable narrow-linewidth micromachined laser/photodetector and phototransistor

F. Sugihwo*, Chien-Chung Lin, L. A. Eyres, M. M. Fejer, J. S. Harris

*Corresponding author for this work

Research output: Contribution to journalConference article

3 Scopus citations


The key limitation to dense Wavelength Division Multiplexing (WDM) systems is the receiving end since laser linewidths are typically less than 1 angstrom. By reverse biasing the p-i-n diode region, we demonstrated dual functionality of wavelength-tunable Vertical-Cavity Surface-Emitting Lasers (VCSELs) as wavelength-tunable Resonant Cavity Photodetectors (RCPs) with linewidths less than 2.5 nm. Additionally, we have fabricated wavelength-tunable Resonant Cavity PhotoTransistors (RCPTs) with linewidths as narrow as 1.7 nm. Wavelength-tunable RCPTs are capable of high quantum efficiency, narrow linewidth, and high-speed operation, making them ideal devices for WDM receivers.

Original languageEnglish
Pages (from-to)665-668
Number of pages4
JournalTechnical Digest - International Electron Devices Meeting
StatePublished - 1 Dec 1998
EventProceedings of the 1998 IEEE International Electron Devices Meeting - San Francisco, CA, USA
Duration: 6 Dec 19989 Dec 1998

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