A Gas Cell Based on Hollow-Core Photonic Crystal Fiber (PCF) and Its Application for the Detection of Greenhouse Gas (GHG): Nitrous Oxide (N<sub>2</sub>O)

<div>Schematic of the experimental setup for the detection of trace gas. PUMP: pump laser; PM-EDF: polarization-maintaining erbium-doped fiber; VOA: variable optical attenuator; SA: saturable absorber; FBG: fiber Bragg grating; OSA: optical spectrum analyzer; CIR: polarization independent optical circulator; PC: polarization controller; and OI: polarization independent optical isolator [<a href="/journals/js/2016/7678315/#B6">4</a>].</div>

Journal of Sensors

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Figure 4: A Gas Cell Based on Hollow-Core Photonic Crystal Fiber (PCF) and Its Application for the Detection of Greenhouse Gas (GHG): Nitrous Oxide (N<sub>2</sub>O) 

Figure 4 | A Gas Cell Based on Hollow-Core Photonic Crystal Fiber (PCF) and Its Application for the Detection of Greenhouse Gas (GHG): Nitrous Oxide (N2O) 