Pigtail type laser modules entirely moulded in plastic

Fukuda, Mitsuo; Ichikawa, F.; Sato, Hiroshi; Tohno, S.; Sugie, T.

doi:10.1049/el:19951210

Cited by 12 publications

(2 citation statements)

References 2 publications

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“…Lead-frame mounting of the laser permits testing of the laser device prior to final packaging [19]. Advances in all-plastic hermetic laser packages [20] have been reported which should further drive down the cost of the laser. Although it was clear that an all-plastic mounting would offer cost advantages, the challenge has been to maintain reliable alignment of the laser and fiber in the face of the temperature and humidity extremes encountered in the loop environment.…”

Section: Lasersmentioning

confidence: 99%

<title>Overview of FTTH networks: past history, current status, and future designs</title>

Effenberger

1996

SPIE Proceedings

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Fiber-to-the-home (F1TH) networks have always been the ultimate solution to a future-proof, broadband access-network. In the past, the major obstacle to implementing FTTH has been cost, coupled with the lack of symmetrical, bandwidth intensive applications. In recent years, however, there have been several technological, commercial, and regulatory developments that brighten the outlook on FTTH. This paper outlines these changes, and presents architectures that may be deployed in the near future.First, the current motivations driving FTFH, including high bandwidth, high reliability, and low operations cost, will be discussed. This will then be followed by a review of various FTFH systems. This will emphasize key developments and trends that are influencing present system configurations. After this background, some recent technology developments that impact FTTH will be presented. These will include high-temperature loop lasers, battery technology, video compression, and ATM transport It will be shown how each of these advances makes FTTH more attainable.In general, a FTTH system can be characterized by its service capability, network topology, and signal format. By specifying different combinations of these characteristics, one can generate many different systems which can then be compared to identify optimal designs. From these considerations, four distinct FFTH networks, including TDM-PON, FDM-PON, dense-WDM-PON, and FTTC with fiber drops are described and analyzed in view of their future potential.

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Section: Lasersmentioning

confidence: 99%

<title>Overview of FTTH networks: past history, current status, and future designs</title>

Effenberger

1996

SPIE Proceedings

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“…Another key issue in regard to achieving a costeffective OSA is a non-hermetic packaging. Current OSAs using InP-based DFBs generally use expensive hermetic packages (i.e., so-called gold boxes) [10]. This is because a DFB laser needs cleaved facets and facet coatings, and facet coatings sometimes cause degradation of lasing performance, particularly in high-humid conditions [11].…”

Section: Introductionmentioning

confidence: 99%

A Lens-Integrated Surface-Emitting DFB Laser and Its Application to Cost-Effective Single-Mode Optical Sub Assembly

Adachi

Suzuki

Tanaka

2018

IEICE Trans. Electron.

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A lens-integrated surface-emitting DFB laser and its application to low-cost single-mode optical sub-assemblies (OSAs) are discussed. By using the LISEL, high-efficient optical coupling with reduced number of optical components and non-hermetic packaging are demonstrated. Designing the integrated lens of LISELs makes it possible to achieve passive alignment optical coupling to an SMF without the need for an additional lens. For SiP coupling, the light-emission angle from the LISEL can be controlled by the mirror angle and by displacing the lens. The capability for a low coupling loss of 3.9 dB between the LISEL and a grating coupler on the SiP platform was demonstrated. The LISEL with facet-free structure, integrating DBR mirror, PD, and window structure on its end facet, showed the same lasing performance as the conventional laser with AR facet coating. A storage test (200-hour saturated pressure-cooker test (PCT) at 138 • C and 85% RH.) showed that the lasing characteristics did not degrade with high-humidity, demonstrating the potential for applying non-hermetic packaging. Our results indicate that the LISEL is one of the promising light sources for creating cost-effective OSAs.

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Highly reliable plastic packaging for laser diodeand photodiode modules used for access network

et al. 1997

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Pigtail type laser modules entirely moulded in plastic

Cited by 12 publications

References 2 publications

<title>Overview of FTTH networks: past history, current status, and future designs</title>

<title>Overview of FTTH networks: past history, current status, and future designs</title>

A Lens-Integrated Surface-Emitting DFB Laser and Its Application to Cost-Effective Single-Mode Optical Sub Assembly

Highly reliable plastic packaging for laser diodeand photodiode modules used for access network

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