| 摘要 |
A new low-cost, highly reliable and compact optical parametric signal monitor is manufactured with simplified structure and improved configurations that require only lateral position adjustment for input/output beam alignment. A compact size is achieved by employing an integration of beam collimator, signal splitter, and wavelength selector. Thermal stability and reliable performance is achieved by applying multiple-layered optical reflection-transmission coating directly onto the end surface of a GRIN lens for tapping a small portion of the collimated beam onto the focus lens and the photo sensor. The insertion loss can be conveniently minimized by laterally shifting the relative position of a dual fiber ferrule and the GRIN lens without complicate angular adjustments. Optical parameters can be monitored with a simple attachment of a wavelength selective element between signal tapping unit and signal detector. A parametric optical signal monitor with compact size, high damage threshold, low manufacture cost and high performance stability is provided for convenient implementation in new and existing optical systems.
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