作者: Nobuo Funabiki , Masahiro Kobayashi , Shuhei Ogawa , Hirokazu Takeuchi
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摘要: What is achieved an optical wavelength multiplexer/demultiplexer not necessarily requiring the function of adjusting path. A value (ΔL max −ΔL min )/L obtained by dividing a difference between maximum ΔL and minimum in range −40° C. to 80° L 8×10 −6 or less where represents length crystallized glass ( 1 ) at 30° (L t each temperatures (L) thereof