发明授权
US5787215A Linear PD/LD module, linear PD/LED module, linear LD/PD module, linear LED/PD module and linear PD module 失效
线性PD / LD模块,线性PD / LED模块,线性LD / PD模块,线性LED / PD模块和线性PD模块

Linear PD/LD module, linear PD/LED module, linear LD/PD module, linear
LED/PD module and linear PD module
摘要:
WDMs have been used to separate a plurality of signals spatially by the difference of wavelengths in prior bidirectional multiwavelength optical communication network. For excluding WDMs, linear PD/LD modules adopt eigen-wavelength photodiodes sensing only the light of an eigen wavelength but allowing all the wavelengths longer than the eigen wavelength. An n-member PD/LD module aligns (n-1) eigen wavelength photodiodes, PD1, PD2, PD3, . . . , PDn-1 of .lambda.1, .lambda.2, .lambda.3, . . . ,.lambda.n-1 and an LD of .lambda. n which satisfy inequalities .lambda.1
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