| 摘要 |
PROBLEM TO BE SOLVED: To test an optical apparatus while applying a large number of optical signals of different wavelengths simultaneously thereto by applying a large number of optical signals to an optical amplifier within a time required for the optical amplifier to be recovered from a noise level under a state applied with a signal to a noise level under a state applied with no signal. SOLUTION: A tunable laser 1 has an output connected through an optical fiber 4 with the input of an EDFA 2 having an output connected through an optical fiber 5 with the output of an optical signal analyzer(OSA) 3. A pattern generator 6, having an output connected through an electrical cable with the control output of the tunable laser 1, generates a large number of optical signals of different wavelength which are applied to the fiber 4. Various signals of different wavelengths are generated within the recovery time of an apparatus to be tested. According to the arrangement, an optical apparatus can be tested, while simultaneously applying a large number of optical signals of different frequencies. |
