Semiconductor optical amplifier

A technology of optical amplifiers and semiconductors, applied in the directions of instruments, optics, nonlinear optics, etc., can solve the problems of difficult process, inconvenient application, complex structure, etc., and achieve the effect of high degree of particle number inversion, easy realization, and simple structure

Inactive Publication Date: 2006-02-15
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The invention provides a semiconductor optical amplifier, which solves the technical problems of complex structure, difficult process and inconvenient application, and has both high saturated output power and low noise index

Method used

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  • Semiconductor optical amplifier
  • Semiconductor optical amplifier
  • Semiconductor optical amplifier

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the embodiments and accompanying drawings.

[0021] image 3 It is a structural schematic diagram of an embodiment of the present invention. The SOA shown is a typical structure in which quantum wells are used as the active region. Its interior consists of a substrate 1, a buffer layer and a lower cladding layer 2, a lower confinement layer 3, an active region 4, an upper confinement layer 5, and an upper cladding layer. 6. The ohmic contact layer 7 is formed sequentially. An anti-reflection film 12 and an anti-reflection film 13 are plated on the input end face and output end face of the amplifier. The top layer and the bottom layer of the amplifier are the upper metal electrode layer 8 and the lower metal electrode layer 9 respectively; the lower electrode 10 is made under the lower metal electrode layer 9 . The input signal light 14 enters the interior of the SOA, and it can be continuously ...

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Abstract

The invention relates to a semiconductor optic element of light amplifier, which comprises the following parts: substrate, breaker, up-envelope, active region, down-envelop, ohmic contact layer, top or bottom chip with up or down metal electrode separately, anti-reflection film plated on the input and output end face of amplifier. The reflectance of anti-reflection film output end face is less than input end face. There are N electric insulating slots, which are etched on the top of the metal electrode, which divide amplifier into N+1 annellus (each annelet has an up-electrode, N>=2) along the tune direction. The invention improves SOA noise index and saturated outcoming power.

Description

technical field [0001] The invention belongs to semiconductor optoelectronic devices, in particular to a semiconductor optical amplifier with high saturated output power and low noise index. Background technique [0002] Semiconductor Optical Amplifier (SOA: Semiconductor Optical Amplifier) ​​will play an important role in all-optical communication systems due to its small size, low cost, and easy integration with other optoelectronic devices, especially in metropolitan area networks and access networks. The distance and transmission rate are small, and the number of channels is not many, so from the perspective of cost performance, the use of semiconductor optical amplifiers is more cost-effective than optical fiber amplifiers; figure 1 It is a representative structural diagram of an existing SOA, see "Research on 1.55μm AlGalnAs-InP Polarization-Independent Semiconductor Optical Amplifier and Its Temperature Characteristics", Ma Hong, Chen Sihai, Jin Jinyan, Yi Xinjian, Zh...

Claims

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Application Information

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IPC IPC(8): G02F1/39
Inventor 刘德明黄黎蓉陈俊柯昌剑
Owner HUAZHONG UNIV OF SCI & TECH
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