{"id":691197,"date":"2024-11-06T05:24:46","date_gmt":"2024-11-06T05:24:46","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/tia-455-127-a2006-r2014\/"},"modified":"2024-11-06T05:24:46","modified_gmt":"2024-11-06T05:24:46","slug":"tia-455-127-a2006-r2014","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/tia\/tia-455-127-a2006-r2014\/","title":{"rendered":"TIA-455-127-A:2006 (R2014)"},"content":{"rendered":"

Introduction<\/strong><\/p>\n

Intent<\/strong><\/p>\n

This test procedure defines and updates the methodology for
\nmeasuring the center (mean) wavelength, peak wavelength and the
\nspectral width (rms1 ) of multilongitudinal mode (MLM),
\nmultitransverse mode (MTM), and single mode (SM) semiconductor
\nlasers using a dispersive spectrophotometric method or other
\nsuitable methods. For SM lasers, only center wavelength should be
\nused and it should be noted that other spectral characteristics,
\nsuch as Side Mode Suppression Ratio (SMSR), Stop Band (SB) for
\ndistributed feedback (DFB) lasers for example, are not covered by
\nthis document. Other measures of spectral width for MM lasers are
\nalso retained from previous versions of this document. Recent
\nstudies on the measurement of the optical spectrum from various
\ncoherent sources into multimode fiber have highlighted issues with
\nmeasurement repeatbility due to speckle pattern variations and
\nlaunch conditioning of the optical source into the multimode
\noptical fiber. In addition, using multitransverse mode sources,
\nsuch as some VCSELs, with singelmode optical fiber can lead to
\nundersampling of the complete optical spectrum.<\/p>\n

Hazards<\/strong><\/p>\n

This procedure involves potentially hazardous operations as
\ndiscussed in this section. During the measurement, a laser may emit
\nnon-visible light. Personnel are strongly cautioned never to look
\ndirectly into the laser or any fiber optic cabling at any time.
\nAlthough the optical output power is generally not very high,
\nvirtually all the power is concentrated into a narrow frequency
\nband, which implies that the energy can be focused into a very
\nintense spot on the retina by the lens within the viewer's eyes.
\nFor a complete review of laser safety guidelines, the reader is
\nreferred to the international standard IEC 60825-2.<\/p>\n","protected":false},"excerpt":{"rendered":"

FOTP-127-A Basic Spectral Characterization of Laser Diodes<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
TIA<\/b><\/a><\/td>\n2006<\/td>\n30<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":691207,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2646],"product_tag":[],"class_list":{"0":"post-691197","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-tia","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/691197","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/691207"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=691197"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=691197"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=691197"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}