4 5db wdm in optical fiber communication

{"cid":"91197464","title":"ST\/ST 5dB UPC Male WDM Single Mode Fiber Attenuator","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/d4\/8a\/5c035d768d605a5fc3a9f5f1d1ef-200x200-1.jpg","attrs":{"Price":"Negotiation","Brand Name":"Geehe (OEM&ODM)","Model Number":"GH-AT-SM-008","Minimum Order Quantity":"600 pcs","Delivery Time":"5-7 working days for confirm order","Certification":"ISO9001:2015,RoHS, ISO14001","Place of Origin":"Wuhan,China","Payment Terms":"T\/T, L\/C, D\/A, D\/P, Western Union","Supply Ability":"60,000 pcs\/ month","Packaging Details":"Plastic box with Pressure defense sponge, outer carton","Model Name":"Singlemode Fiber optic Attenuator UPC Male","Gender Type":"Fixed Female to Male","Connector Type":"ST\/UPC","Attenuation Value":"2db,3db,5db,6db,7db,10db,15db,30db etc","Operating Wavelength":"1260nm~1620nm","Color":"Blue,Green, beige","Housing":"Metal, Plastic","Ferrule":"Zirconia\/Ceramic, Metal","Attenuation Tolerance":"(1-10dB) \u00b10.5, (11-25dB) \u00b110%","Fiber Mode":"Singlemode"}}