Abstract
A quantum cascade (QC) laser is presented that is both temporally and wavelength multiplexed, i.e. it emits two widely different wavelengths at two alternate time slots. A bidirectional and multi-wavelength QC laser source that emits at 10.8m wavelength for a positive polarity current and 8.6m for a negative polarity current was used. A diode based adder circuit was designed to drive the QC laser such that it added two opposite polarity current pulses with a variable time delay. Application of two polarity 100ns pulse width current pulses at 80kHz with time delays of 0.5 to 2.5s resulted in a versatile time and wavelength multiplexed QC laser.
Original language | English (US) |
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Pages (from-to) | 357-359 |
Number of pages | 3 |
Journal | Electronics Letters |
Volume | 45 |
Issue number | 7 |
DOIs | |
State | Published - 2009 |
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering