4 March 2014 O-band (1310 nm) Vernier-tuned distributed Bragg reflector (VT-DBR) device characterization for OCT
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Abstract
Vernier-tuned distributed Bragg reector (VT-DBR) lasers in source swept OCT (SS-OCT) have previously been demonstrated at 1550 nm and 1600 nm.1 Many OCT applications prefer 1310 nm operation. This work describes the first demonstration of a VT-DBR operating at 1310 nm in the O-band, ideal for use in SS-OCT. This paper addresses the device characterization of such lasers, illustrating they are capable of fast amplitude and frequency sweeps necessary for SS-OCT applications. Equivalent circuit models for each of the five ports are also created to determine their electrical parasitics. Narrow linewidths of the VT-DBR indicate coherence length of several centimeters are possible during fast wavelength sweeps.
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Desmond Talkington, Dennis Derickson, Jason Ensher, "O-band (1310 nm) Vernier-tuned distributed Bragg reflector (VT-DBR) device characterization for OCT", Proc. SPIE 8934, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVIII, 89342X (4 March 2014); doi: 10.1117/12.2040489; https://doi.org/10.1117/12.2040489
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