Width-adjustable full-light optical switch of switch window

Abstract

The invention relates to the field of photoelectric technology and discloses a width-adjustable full-light optical switch of a switch window. The full-light optical switch uses cross gain modulation XPM effect of a semiconductor optical amplifier (SOA) for changing the offset of the SOA in a nonlinear optical loop mirror (NOLM) by controlling the delay time of an optical delay line (ODL) in the NOLM, so that the problems that the width of the optical switch is unadjustable, the flexibility of the optical switch is small and the like, the width of the optical switch is adjustable, and the operation is convenient and flexible.

Description

technical field

[0001] The invention relates to the field of optoelectronic technology, in particular to an all-optical optical switch with adjustable switching window width. Background technique

[0002] The amplification principle of the semiconductor optical amplifier SOA is similar to the working principle of the semiconductor laser. It also uses the phenomenon of particle population inversion caused by the excited transition between energy levels to perform optical amplification. The usual semiconductor optical amplifier SOA is coated with anti-reflection film on its two sections to eliminate the reflection at both ends to obtain broadband, high output, and low noise. The semiconductor optical amplifier SOA is used as an optical band conversion switch element. Its main advantage lies in the extremely fast optical switching rate, the switching time is ns level, and it can also perform gain compensation for inherent optical signal loss. In addition, the semiconductor opt...

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