Multiwavelength erbium-doped fiber laser with a high-birefringence fiber loop mirror

Polarization-Independent Multiwavelength-Switchable Filter Based on Polarization Beam Splitter and Fiber Coupler

“…Switching the capability of the channel wavelength of the proposed filter can give an expanded versatility to conventional SBFs whose spectral location is fixed. Of particular note, the proposed filters can be applied to fiber lasers and sensors as wavelength-selective interleavers [8].…”

Low‐threshold characteristics of a linear‐cavity multiwavelength brillouin/erbium fiber laser

“…Much of the research has been done by using either analytical methods [1][2][3] or full-wave analysis [4]. The analytical methods use either the radial waveguide model or cavity model.…”

“…Compact optical sources that generate pulses at multiple wavelengths are extremely important for use in DWDM communication systems. The continuous multiwavelength generation based on erbium-doped fiber (EDF) is possible once the effects of homogenous line broadening and unstable gain competition are reduced [1][2][3].…”

An over 40 channel multi‐wavelength laser source

“…Moreover, since the gain spectrum depends on the operating level of the gain, wavelength-independent loss variations also normally break the required gain-loss balance, with the same result. Currently reported simultaneous CW multi-wavelength fiber lasers [1][2][3][4][5][6][7]9] therefore require careful balancing of cavity losses at each wavelength and it is very difficulty to generate a stable multi-wavelength laser with larger-channels at the same time.…”

“…Recently, simultaneous CW multi-wavelength oscillations with equal frequency spacing were demonstrated by using active overlapping linear cavities [1], a high birefringence fiber loop mirror [2], intracavity polarization hole burning [3], intracavity distributed Bragg reflector [4], a sampled fiber Bragg grating [5], a self-seeded FabryPerot laser diode [6], spatial mode beating within the multimode fiber section [7] and multi-cavity oscillation [8]. Because of the relatively large homogeneous gain broadening of EDFs, simultaneous CW multi-wavelength lasing in an erbium-doped fiber laser (EDFL) is very sensitive to cavity loss variations [9].…”