Multimirror Fabry–Perot interferometers

Crosstalk analysis and filter optimization of single- and double-cavity Fabry-Perot filters

“…Several methods for achieving this isolation have been discussed in detail in [4] and [11]. Other alternative structures, such as the three-mirror FP filter [41 [12], will not be covered in this paper.…”

Tunable dual-wavelength fiber laser

“…Moreover, the Fabry-Perot cavities (FP1 and FP2, Fig. 1) formed by the transient Bragg-reflection grating and fiber Bragg gratings (FBG1 and FBG2) modulated the output of the laser [19][20][21]. The effective cavity length of the laser was approximately 8.5 m, that corresponds to a longitudinal-mode spacing of $24 MHz (Dm FSR = c/nL, L is the total cavity length).…”

Tunable Single-Longitudinal-Mode High-Power Fiber Laser

“…The Fabry-Perot filter was formed by splicing two 2 × 2 single-mode fused fiber couplers (split ratio 99 : 1) together (Figure 2), which helped to eliminate the mode hopping of the laser wavelength by increasing the effective longitudinalmode spacing of the laser cavity [22]. In general the length of the ring cavity is longer than the FP filter cavity; thus, the presence of the filter inside the cavity produces the vernier effect and increases the longitudinal-mode spacing of the cavity [23][24][25]. In our experiment the length of the Fabry-Perot filter was ∼0.4 m, which corresponds to a free spectral range of FSR FP ≈ 514 MHz.…”