MMI filters configuration for dual-wavelength generation in a ring cavity erbium-doped fibre laser

BackgroundDual wavelength laser generation has been of constant interest due to their applications in optical communications and teraheartz generation. A novel configuration for Dual-wavelength laser generation based on the use of a couple of multimode interference (MMI) filters is demonstrated in a ring cavity Erbium-doped fibre laser.MethodsThe MMI filters consist of a segment of no-core fibre spliced between two SMF-28 single mode fibre segments. The MMI filters configured as a Mach-Zehnder interferometer, are used as transmission spectral filters for simultaneous generation of two laser wavelengths. An optical attenuator is used to adjust the intra-cavity losses for dual-wavelength laser generation.ResultsLaser emission at 1540.4 and 1554 nm for a wavelength separation of ~13.6 nm is obtained. The laser wavelengths output power stability variations with the applied pump power is also experimentally discussed.ConclusionsThe use of MMI filters in the proposed dual-wavelength laser filter is experimentally demonstrated as a reliable device for dual-wavelength generation in fibre lasers.

[1]  Orlando Frazão,et al.  Multimode interference in tapered single mode-multimode-single mode fiber structures for strain sensing applications , 2012, Other Conferences.

[2]  Georgina Beltrán-Pérez,et al.  Actively Q-switched dual-wavelength laser with double-cladding Er/Yb-doped fiber using a Hi-Bi Sagnac interferometer , 2015 .

[3]  P. LiKamWa,et al.  Tunable multimode-interference bandpass fiber filter. , 2010, Optics letters.

[4]  K. S. Bindra,et al.  Note: Broadly tunable all-fiber ytterbium laser with 0.05 nm spectral width based on multimode interference filter. , 2014, The Review of scientific instruments.

[5]  Young-Geun Han,et al.  Switchable dual wavelength erbium-doped fiber laser at room temperature , 2007 .

[6]  Hideki Fukano,et al.  Experimental Analysis of Optical Fiber Multimode Interference Structure and its Application to Refractive Index Measurement , 2012 .

[7]  Shumin Zhang,et al.  Tunable double-clad ytterbium-doped fiber laser based on a double-pass Mach-Zehnder interferometer , 2012 .

[8]  M. Smit,et al.  Multi-Mode Interference Optical Devices Based on Self-Imaging Effects , 1992 .

[9]  B. Ibarra-Escamilla,et al.  Theoretical and experimental analysis of tunable Sagnac high-birefringence loop filter for dual-wavelength laser application. , 2011, Applied optics.

[10]  Xijia Gu,et al.  All-fiber multimode interference bandpass filter. , 2006, Optics letters.

[11]  A. Castillo Guzman,et al.  Widely tunable erbium-doped fiber laser based on multimode interference effect , 2010 .

[12]  Huilin Jiang,et al.  Tunable multiwavelength Tm-doped fiber laser based on the multimode interference effect. , 2015, Applied optics.

[13]  S. Jian,et al.  Tunable dual-wavelength fiber laser based on an MMI filter in a cascaded Sagnac loop interferometer , 2014 .

[14]  Yuliya Semenova,et al.  Investigation of single-mode–multimode–single-mode and single-mode–tapered-multimode–single-mode fiber structures and their application for refractive index sensing , 2011 .

[15]  Shuzhong Yuan,et al.  Switchable triple-wavelength erbium-doped fiber laser using a single fiber Bragg grating in polarization-maintaining fiber , 2007 .

[16]  P. LiKamWa,et al.  Wavelength tuning of fiber lasers using multimode interference effects. , 2005, Optics express.

[17]  E.C.M. Pennings,et al.  Optical multi-mode interference devices based on self-imaging: principles and applications , 1995 .

[18]  J E Antonio-Lopez,et al.  Fiber-optic sensor for liquid level measurement. , 2011, Optics letters.