Hybrid Brillouin/erbium fiber laser

Cowle, G.J.; Степанов, Д. В.

doi:10.1364/ol.21.001250

Cited by 187 publications

(68 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The inadequate Brillouin gain in the single mode fiber requires another gain medium to compensate the cavity loss and to improve the laser operation efficiency. This concept was successfully demonstrated by Cowle and Stepanov [12] . The combination of the SBS effect and the EDF in the same laser cavity creates a Brillouin/erbium fiber laser (BEFL).…”

mentioning

confidence: 91%

Realization of a low threshold multiwavelength brillouin/erbium f iber laser by optimizing the reflected power

Al-Alimi¹,

Abas²,

Mahdi³

et al. 2012

中国光学快报

View full text Add to dashboard Cite

A multiwavelength Brillouin/erbium fiber laser (BEFL) with low threshold power is realized. A low threshold power of 3 mW and a wide tuning range of 18 nm can be achieved by controlling the reflected power in the nonlinear optical loop mirror (NOLM). Up to 24 lines with a wavelength spacing of 0.086 nm are generated at the Brillouin pump and at the 1 480-nm pump with −0.5 dBm (0.9 mW) and 25 mW of power, respectively.OCIS codes: 140.3510, 290.5900, 060.2410. doi: 10.3788/COL201210.121401.The multi-wavelength laser sources have been used in many applications, such as in dense wavelength division multiplexing (DWDM) systems, optical fiber sensors, and microwave photonics [1,2] . By offering cost-saving solutions, the erbium-doped fiber laser (EDFL) has attracted much interest in its use as a multi-wavelength laser source. However, the homogeneous linewidth of the gain medium in EDFLs should be reduced, and the mode competition between adjacent laser signals should be suppressed. Several techniques have been proposed to solve this problem, such as cooling down the EDF to liquid nitrogen temperature [3] , using frequency-shifted feedback [4] , and optimizing the cavity loss [5,6] . Other multiwavelength sources that utilize different nonlinear effects, such as four-wave mixing (FWM) [7,8] , nonlinear polarization rotation (NPR) [9] , stimulated Brillouin scattering (SBS) [10] , and stimulated Raman scattering (SRS) [11] were previously reported. The inadequate Brillouin gain in the single mode fiber requires another gain medium to compensate the cavity loss and to improve the laser operation efficiency. This concept was successfully demonstrated by Cowle and Stepanov [12] . The combination of the SBS effect and the EDF in the same laser cavity creates a Brillouin/erbium fiber laser (BEFL). Different BEFL structures have been proposed to generate multiple wavelengths when achieving low threshold values and low pump power per channel are both very important. The pre-amplification technique in a linear cavity [13−18] is widely used to reduce the SBS threshold and to enhance the performance of the BEFL. The reverse-S-shaped section was used as another method to reduce the threshold power, in which the Brillouin Stokes (BS) signals couple back into the laser cavity [19] . However, in this structure, the use of many optical components requires a high threshold power. When the reverse-S-shaped fiber section was replaced by a broadband, partially reflecting fiber Bragg grating (FBG), the threshold power was improved [20] . The transmission and the reflection power intensity of the nonlinear optical loop mirror (NOLM) have been investigated by Doran et al. [21] . The rapid auto-switching ability of the NOLM makes it a valuable technique in optical signal processing applications, which include pulse shaping [22] , amplitude equalizing [23] , and self-switching [24] . More studies [25,26] have recently exploited the effect of the NOLM as an effective component to improve the BEFL performance. In this letter, multiwavelength B...

show abstract

mentioning

confidence: 91%

Realization of a low threshold multiwavelength brillouin/erbium f iber laser by optimizing the reflected power

Al-Alimi¹,

Abas²,

Mahdi³

et al. 2012

中国光学快报

View full text Add to dashboard Cite

show abstract

“…Erbium amplification along with SBS are used to implement an Erbium Brillouin Fiber Laser [4][5][6][7]. For Dense Wavelength Division Multiplexing DWDM applications, multiwavelength Brillouin Erbium fiber laser was realized where each Stokes signal acts as a new pump to generate another Stokes signal downshifted by 11 GHz (about 0.088 nm).…”

Section: Introductionmentioning

confidence: 99%

Generation of Nanosecond Optical Pulses With Controlled Repetition Rate Using in-Cavity Intensity Modulated Brillouin Erbium Fiber Laser

Kotb¹,

Shalaby²,

Ahmed³

2011

PIER

View full text Add to dashboard Cite

Abstract-A multimode Brillouin Erbium Fiber Laser BEFL, at 1550 nm band, with in-cavity intensity modulation is demonstrated. The output of the laser is in the form of nanosecond pulses. The longitudinal mode separation is increased, which results in both reducing the number of oscillation modes and, at the same time, changing the output pulses repetition rate to be multiples of the round trip cavity frequency. It is also demonstrated that the number of modes is greatly reduced by the combination of active mode locking and the group velocity dispersion arising from the change in the refractive index at each mode due to the change in its gain within the Brillouin gain bandwidth. A case of a quasi single mode is reached where the output is nearly CW with very low sinusoidal modulation index.

show abstract

“…Its output power reaches 70.1 mW, which is more than seven times higher than the seeded BP power. The BYFL has an optical signal-to-noise ratio that is greater than 65 dB and has many potential applications, such as in controllable optical delay lines, sensing, and RF photonics.OCIS , optical carrier amplitude control [3] , gyroscopes [4] , and lasers [5] . Brillouin fiber lasers (BFLs) have attracted significant interest for decades due to their linewidth narrowing effect.…”

mentioning

confidence: 99%

“…OCIS , optical carrier amplitude control [3] , gyroscopes [4] , and lasers [5] . Brillouin fiber lasers (BFLs) have attracted significant interest for decades due to their linewidth narrowing effect.…”

mentioning

confidence: 99%

“…Although SBS is detrimental for coherent optical communication systems, this disadvantage does not prohibit the exploitation of SBS in distributed strain and temperature sensing [1] , microwave generation [2] , optical carrier amplitude control [3] , gyroscopes [4] , and lasers [5] . Brillouin fiber lasers (BFLs) have attracted significant interest for decades due to their linewidth narrowing effect.…”

mentioning

confidence: 99%

See 1 more Smart Citation

High-efficiency hybrid brillouin/ytterbium fiber laser

Zhang¹,

Jiang²,

Wang³

et al. 2012

中国光学快报

View full text Add to dashboard Cite

A high-efficiency hybrid Brillouin/ytterbium fiber laser (BYFL) is demonstrated using a 41.5-cm-long highly ytterbium-doped fiber and a 10-m-long single-mode optical fiber. The BYFL operates at 1 052.92 nm, and the difference between it and the Brillouin pump (BP) wavelength matches the expected stimulated Brillouin scattering (SBS) Stokes shift. Its output power reaches 70.1 mW, which is more than seven times higher than the seeded BP power. The BYFL has an optical signal-to-noise ratio that is greater than 65 dB and has many potential applications, such as in controllable optical delay lines, sensing, and RF photonics.OCIS , optical carrier amplitude control [3] , gyroscopes [4] , and lasers [5] . Brillouin fiber lasers (BFLs) have attracted significant interest for decades due to their linewidth narrowing effect. The free-running spectral linewidth of the singlefrequency Brillouin ring fiber laser has been reported to be only a few hertz [6] , which can be several orders of magnitude narrower than that of their single-frequency pump beams. Moreover, the BFL exhibits low relative intensity and frequency noises. All these advantages make the BFL applicable in controllable optical delay lines, sensing [7] , and radio frequency (RF) photonics [8] . For a conventional ring-cavity Brillouin laser, the pump-coupling ratio depends on the cavity loss and the round-trip phase shift in the cavity, which must be an integer number of 2π to achieve the intensity enhancement. Although the conventional BFL exhibits useful characteristics, it has disadvantages such as the small output power, the requirement of cavity matching to the pump signal, and the difficulty in incorporating intracavity elements because of their associated loss. The hybrid Brillouin/ytterbium fiber laser (BYFL) can overcome these disadvantages by using an ytterbium-doped fiber amplifier to compensate for the resonator losses while still commencing a lasing action from the Brillouin gain.A high-efficiency BYFL based on Ref.[9] is demonstrated in this letter. When the Brillouin pump (BP) power is 9.68 mW, the laser output power reaches 70.1 mW at a 980-nm pump power of 383 mW, compared with that of Guan's work, which obtains only 40 mW of laser output. This BYFL has an optical signal-to-noise ratio (OSNR) that is greater than 65 dB. Figure 1 shows the BYFL configuration. The BP, a distributed feedback laser diode with a linewidth of less than 70 kHz at 1 052.86 nm, was amplified by a fiber amplifier and then seeded into the laser cavity through a circulator and a 70/30 coupler. The BP was first amplified by a 41.5-cm-long highly ytterbium-doped fiber (HYDF) with a pump absorption rate of 975 dB/m. Then, the BP entered into a 10-m-long single-mode fiber (SMF), which functions as the Brillouin gain medium. The Stokes wave was generated in the SMF and circulated clockwise, and a 1 053-nm isolator was inserted in the cavity to prevent the laser from injection locking to the BP. The 70/30 coupler coupled the laser out of the cavity through the 70% port, wherea...

show abstract

Hybrid Brillouin/erbium fiber laser

Cited by 187 publications

References 6 publications

Realization of a low threshold multiwavelength brillouin/erbium f iber laser by optimizing the reflected power

Realization of a low threshold multiwavelength brillouin/erbium f iber laser by optimizing the reflected power

Generation of Nanosecond Optical Pulses With Controlled Repetition Rate Using in-Cavity Intensity Modulated Brillouin Erbium Fiber Laser

High-efficiency hybrid brillouin/ytterbium fiber laser

Contact Info

Product

Resources

About