Intensity discrimination of optical pulses with birefringent fibers

Stolen, R. H.; Botineau, J.; Ashkin, A.

doi:10.1364/ol.7.000512

Cited by 291 publications

(73 citation statements)

References 9 publications

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“…The ellipse can be resolved into right-and left-hand circular polarization components of different intensities. These two circular components then accumulate different nonlinear phase shifts related to the intensity dependence of the refractive index (n = n 0 + n 2 I) [56,57]. The polarization ellipse rotates while maintaining its ellipticity and handedness.…”

Section: Polarization Apmmentioning

confidence: 99%

Ultrashort-pulse fiber ring lasers

Nelson¹,

Jones²,

Tamura³

et al. 1997

Applied Physics B: Lasers and Optics

753

385

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Abstract. This paper reviews recent progress on ultrashort pulse generation with erbium-doped fiber ring lasers. The passive mode-locking technique of polarization additive pulse mode-locking (P-APM) is used to generate stable, selfstarting, sub-500 fs pulses at the fundamental repetition rate from a unidirectional fiber ring laser operating in the soliton regime. Saturation of the APM, spectral sideband generation, and intracavity filtering are discussed. Harmonic modelocking of fiber ring lasers with soliton pulse compression is addressed, and stability regions for the solitons are mapped and compared with theoretical predictions. The stretchedpulse laser, which incorporates segments of positive-and negative-dispersion fiber into the P-APM fiber ring, generates shorter (sub-100 fs) pulses with broader bandwidths (> 65 nm) and higher pulse energies (up to 2.7 nJ). We discuss optimization of the net dispersion of the stretched-pulse laser, use of the APM rejection port as the laser output port, and frequency doubling for amplifier seed applications. We also review the analytical theory of the stretched-pulse laser as well as discuss the excellent noise characteristics of both the soliton and stretched-pulse lasers. 42.60F; 42.65; 42.80 Fiber lasers were made possible in the 1960s by the incorporation of trivalent rare-earth ions such as neodymium, erbium, and thulium into glass hosts [1]. Soon thereafter neodymium was incorporated into the cores of fiber waveguides [2,3]. Due to the high efficiency of the Nd +3 ion as a laser, early work focused on Nd +3 -doped silica fiber lasers operating at 1.06 µm [4]. Doping of silica fibers with Er +3 ions was not achieved until the 1980s [5,6]. Since that time Er +3 -doped fiber lasers have received much attention, because the lasing wavelength at 1.55 µm falls within the low-loss window of optical fibers and thus is suitable for optical fiber communications. Rare-earth ions such as Ho +3 [7,8], Tm +3 [9-11], and * Current address: Lucent Technologies/Bell Labs, 791 Holmdel-Keyport Road, Holmdel, NJ, USA * * Current address: NTT Access Network Systems Laboratory, Tokai-mura, Naka-gun, Ibaraki-ken 319-11, Japan Yb +3 [12,13] have also been used as dopants or co-dopants in silica or fluoride fibers, allowing new lasing or pumping wavelengths, and Pr +3 has been incorporated into fluoride fiber, providing emission at 1.3 µm [14,15]. PACS:Among the numerous advantages of fiber lasers are simple doping procedures, low loss, and the possibility of pumping with compact, efficient diodes. The fiber itself provides the waveguide, and the availability of various fiber components minimizes the need for bulk optics and mechanical alignment. Many different cavity configurations can be easily built with fibers and fused-fiber couplers, including linear FabryPerot, ring, and combinations of the two. Enhancement of the fiber nonlinearity due to large signal intensities and long interaction lengths is an additional advantage of fiber lasers that is particularly important for mode-locki...

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Section: Polarization Apmmentioning

confidence: 99%

Ultrashort-pulse fiber ring lasers

Nelson¹,

Jones²,

Tamura³

et al. 1997

Applied Physics B: Lasers and Optics

753

385

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“…In the case of a laser cavity with a multibirefringent beat length, the nonlinearity of the fiber introduces a nonlinear phase change 12,13,17 :…”

Section: Linear Cavity-transmission Analysismentioning

confidence: 99%

“…The self-started mode locking of the laser is achieved by use of the nonlinear polarization-rotation technique. 2,[12][13][14] To this end two polarization controllers, one consisting of two quarter-wave plates and the other consisting of two quarter-wave plates and one half-wave plate are used to control the polarization of the light. The wave plates and the polarization-dependent isolator are mounted inside a fiber bench, which is a fiber-to-fiber coupling system used for coupling light from one fiber to another across a 7-cm open-air gap.…”

Section: Introductionmentioning

confidence: 99%

Mechanism of intrinsic wavelength tuning and sideband asymmetry in a passively mode-locked soliton fiber ring laser

et al. 2000

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We have experimentally observed continuous-wavelength tuning in a passively mode-locked fiber ring laser. Depending on the polarization setting, two separated tuning ranges are observed. We show that the wavelength tuning is a result of the existence of birefringence in the laser cavity. We have also shown that the same mechanism is responsible for the power asymmetry of sidebands appearing in the soliton spectrum.

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“…Utilizing the nonlinear polarization rotation has been intensively studied for pulse reshaping [12]- [13], light modulation [14], intensity discrimination [15]- [16], optical logic gating [12], and mode locking in fiber lasers [17]- [18]. Although the analysis during this paper is carried out for isotropic media, which we consider to have applicability advantages, the same approach is workable for birefringent crystals whereby the external field may either enhance the desired effect or act as an adaptive control.…”

Section: Introductionmentioning

confidence: 99%

Electrically and optically controlled cross-polarized wave conversion

Čada¹,

Qasymeh²,

Pištora³

2008

Opt. Express

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Light wave propagation in third-order nonlinear media with applied external electric field is investigated. Interplay between the nonlinear electro-optic and all-optical effects is examined theoretically. Energy exchange between the orthogonal light polarizations, the cross polarization conversion, results. The assisting external field acts as either the effect-enhancing or functionalitycontrolling parameter. Various materials such as silica glass, silicon, other bulk and quantum well semiconductors, organic materials, and particle-doped nanostructures are referred to as possible candidates for device implementations. Numerical estimates of achievable parameters in a selected suitable material are discussed.

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Intensity discrimination of optical pulses with birefringent fibers

Cited by 291 publications

References 9 publications

Ultrashort-pulse fiber ring lasers

Ultrashort-pulse fiber ring lasers

Mechanism of intrinsic wavelength tuning and sideband asymmetry in a passively mode-locked soliton fiber ring laser

Electrically and optically controlled cross-polarized wave conversion

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