dfb-ld 中文意思是什麼
dfb-ld
解釋
分佈反饋型-
Based on the rate equation and the temperature characteristic of the ld, the temperature control object model and the temperature control error of dfb - ld are analyzed. then the power and wavelength output characteristic is farther analyzed
首先從ld的溫度特性入手，分析了分佈反饋式ld （ distributefeedbacklaserdiode ， dfb - ld ）的溫度控制誤差、溫度控制對象。 -
Dfb - ld distributed feedback ld
分佈反饋型 -
In present commercial wdm systems, distributed feedback las ers ( dfb - ld ) are widely used as a single - mode tight source
在目前的wdm系統中，分佈反饋半導體激光器（ dfb - ld ）已被廣泛地用作單頻光源。 -
However, the emission wavelength of a dfb - ld needs to be carefully turned on the predetermined wavelength grid by adjusting both laser temperature and bias current. furthermore, dfb - ld has such drawbacks as a relatively large variation of the lasing wavelength with ambient temperature ( ~ 0. 1nm / c ) which restricts its application in dwdm systems
然而dfb - ld的激射波長受溫度（ 0 . 1nm ）和偏置電流的影響較大，只有通過調節dfb - ld的溫度和偏置電流，其激射波長才能被調諧在預置的波長處。 -
Usually, it is thought that the lasing wavelength of a fgesl is locked at the bragg reflection wavelength of fiber grating ( fg ). owing to a relatively small dependence of the reflection spectrum of fg on ambient temperature ( - 0. 01nm / c ), the lasing wavelength of a fgesl is thought to behave more stable than that of a dfb - ld
由於fgesl的激射波長主要由光纖光柵（ fg ）的布拉格波長確定，因此選擇具有合適布拉格波長的fg就能使fgesl的激射波長處于預置波長處；同時，由於fg的布拉格波長受溫度變化的影響相對較小（ 0 . 01nm ） ，因此fgesl與dfb - ld相比具有更高的溫度穩定性。
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