【摘要】 本文首次提出了利用周期性热及电场诱导的D型光纤的波长转换器 .推导了转换效率 η和转换带宽Δλ的表达式 ,该式与数值计算一致 .结果表明 ,η与二次非线性系数和泵浦光功率成对数关系 ,但它们对Δλ的影响不大 .适当增加D型光纤的长度能有效提高 η,但却降低了Δλ .一般情况下 ,η >- 15dB ,Δλ >10 0nm .模拟了WDM网中 8个信道信号光的波长转换更多还原

【Abstract】 A novel wavelength converter is proposed by use of D fiber after periodically thermal/electric field poling in the paper for the first time.The expressions for conversion efficiency η and bandwidth Δλ are derived,which are consistent with numerical calculation.The results show that η is proportional to the logarithm of second order nonlinear coefficient and pump light power,and,however,they have only a little effect to Δλ.By properly increasing the length of D fiber η can be efficiently enhanced,but Δλ will be decreased.Under the ordinary condition,η>-15dB and Δλ>100nm can be achieved.The wavelength conversion for 8 channel signal is simulated.更多还原