Dynamic Behavior of an All-Optical Inverter Using Transverse-Mode Switching in 1.55-&amp;lt;tex&amp;gt;$muhboxm$&amp;lt;/tex&amp;gt;Vertical-Cavity Surface-Emitting Lasers

IEICE Electron. Express

2005

Abstract:We propose a novel optical-regenerator based on twotransverse mode VCSEL with dual optical-injection locking. The nonlinear transfer function in input-output characteristics enables us to reshape the degraded input signal. In addition, the polarization state of the output signal can be tightly controlled. The CW assist light injected into the fundamental transverse mode increases the speed and stabilizes the polarization of the output light at the same time. A possibility of 4R (3R+Re-polarization) regeneration at 10 Gbps is suggested.

“…The principle of the proposed optical regeneration, which is based on a VCSEL-based optical inverter [4], is shown in Fig. 1.…”

Section: Proposed Schemementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

All-optical regenerator with re-polarization function based on dual optical injection VCSEL

IEICE Electron. Express

2005

“…Novel applications of VCSELs for all-optical signal processing have been also discussed and several studies have been made, which include an optical inverter, a limiter, a 2R/3R regenerator, a buffer memory and so on [2,3,4,5]. We have proposed and demonstrated an optical signal processing device based on the transverse mode switching of a two-mode VCSEL with injection locking [3,4,5]. The polarization control of randomly polarized signal light in single-mode fibers is one of remaining issues for future photonic networks involving polarization-dependent optical devices.…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, we propose a novel polarization controller using an injection-locked VCSEL. The proposed device is based on the operating principle of an optical inverter we previously demonstrated [5]. The elliptical-shaped cavity enables us to obtain the stable polarization state for a fundamental transverse mode, while two orthogonal polarization states of the high-order transverse mode are degenerated.…”

Section: Introductionmentioning

confidence: 99%

“…Figure 1 (a) illustrates the operating principle of the proposed polarization controller using a VCSEL-based optical inverter with an elliptical active region. When external light is injected to the high-order mode of a VCSEL with the wavelength slightly longer than that of a free-running VCSEL, the dominant lasing mode is abruptly switched from the fundamental mode to the high-order mode at some threshold input power due to injection locking [5]. Thus, the output of the fundamental mode shows an inverter behaviour as a function of the input light of the high-order mode.…”

Section: Introductionmentioning

confidence: 99%

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Novel polarization controller based on injection-locked vertical-cavity surface-emitting laser

IEICE Electron. Express

2005

A novel polarization controller using the transverse mode switching of a vertical-cavity surface-emitting laser (VCSEL) induced by injection locking is proposed. The operating principle is based on an all-optical inverter using transverse mode switching of an ellipticalshaped VCSEL keeping a stable polarization state. We carried out the modeling based on a multi-transverse-mode rate equation analysis, exhibiting the potential of high-speed polarization control at 5 Gbps.

Modeling of a high‐speed polarization controller based on a vertical‐cavity surface‐emitting laser

Electron Comm Jpn Pt II

2006

SUMMARYPhotonic networks have gained attention as the next generation optical communication system because their communication processes use wavelength information in the optical region. Generally, because the polarization states of the optical wavelengths propagating in optical fibers are irregular, strong noise is generated because the optical devices constructing the photonic network exhibit a dependence on polarized light. To suppress this noise, polarization control becomes an important technology. In this research, we propose a new polarization controller to bring out the superior features of the surface-emitting laser and examine its dynamic characteristics. In this paper, we also conduct analysis based on the multimode rate equations that consider high-order lateral modes and polarization modes, and dynamic analysis of the polarization controller based on analyzing the optical inverter characteristics obtained by the lateral mode switching, which becomes the fundamental principle of the light input and output. Based on the static and dynamic characteristics, we demonstrated the possibility of a high-speed polarization controller using a surfaceemitting laser structure.