Low-cost fabrication of optical subassemblies

Cohen, Michael B.; Johnson, Glen O.; Trewhella, J.M.; Lacey, D.; Oprysko, Modest M.; Karst, D. L.; DeFoster, S.M.; Hogan, William; Peterson, Mark D.; Weirick, J. A.

doi:10.1109/96.618225

Cited by 15 publications

(5 citation statements)

References 7 publications

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“…До 2000 года основным методом фиксации элементов модулей была фиксация при помощи клеев на основе эпоксидных смол [4] (рис.3a). Несмотря на то, что работать с эпоксидными клеями достаточно удобно, после сборки модуля необходимо проводить термоциклирование и ускоренные испытания.…”

Section: фиксация элементов лазерного диодного модуляunclassified

Laser Diode Modules: Optical Coupling And Parts Bonding

Andryieuski¹,

Andryieuski²

2017

FRos

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Section: фиксация элементов лазерного диодного модуляunclassified

Laser Diode Modules: Optical Coupling And Parts Bonding

Andryieuski¹,

Andryieuski²

2017

FRos

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“…Practically, short-reach optical interconnects have played a crucial role in such applications as data processing units, multimedia consumer electronics, optical storage systems, etc [3][4][5]. Transmitter (Tx) and receiver (Rx) modules, requiring a low cost and a large volume production capability, are particularly suitable to the adoption of optical interconnects [4][5][6][7][8]. Toward this end, an optical sub-assembly (OSA) using vertical cavity surface emitting lasers (VCSELs) has been extensively studied [4,[8][9][10][11][12], in conjunction with plastic optical fibers (POFs) allowing for an easy handling [4,5,12].…”

Section: Introductionmentioning

confidence: 99%

“…Toward this end, an optical sub-assembly (OSA) using vertical cavity surface emitting lasers (VCSELs) has been extensively studied [4,[8][9][10][11][12], in conjunction with plastic optical fibers (POFs) allowing for an easy handling [4,5,12]. For implementing those Tx/Rx modules, a plastic injection molding [4,6] and a passive assembly [4,[8][9][10] have been also actively researched in view of a low-cost volume production. Previously there have been reports on multi-channel modules using step-index POFs with a bit rate of 1.6 Gbps per channel [13], yet they did not accomplish a fully passive alignment based on a pick-and-place scheme.…”

Section: Introductionmentioning

confidence: 99%

Ribbon plastic optical fiber linked optical transmitter and receiver modules featuring a high alignment tolerance

Lee¹,

Park²,

Cha³

et al. 2011

Opt. Express

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Ribbon plastic optical fiber (POF) linked four-channel optical transmitter (Tx) and receiver (Rx) modules have been proposed and realized featuring an excellent alignment tolerance. The two modules share a common configuration involving an optical sub-assembly (OSA) with vertical cavity surface emitting lasers (VCSELs)/photodetectors (PDs), and their driver ICs, which are integrated onto a single printed circuit board (PCB) substrate. The OSA includes an alignment structure, a beam router and a fiber guide, which were produced by using plastic injection molding. We have accomplished a fully passive alignment between the VCSELs/PDs and the ribbon POF by taking advantage of the alignment structure that serves as a reference during the alignment of the constituent parts of the OSA. The electrical link, which largely determines the operation speed, has been remarkably shortened, due to a direct wire-bonding between the VCSELs/PDs and the driver circuits. The light sources and the detectors can be individually positioned, thereby overcoming the pitch limitations of the ribbon POF, which is made up of perfluorinated graded-index (GI) POF with a 62.5 μm core diameter. The overall alignment tolerance was first assessed by observing the optical coupling efficiency in terms of VCSEL/PD misalignment. The horizontal and vertical 3-dB alignment tolerances were about 20 μm and 150 μm for the Tx and 50 μm and over 200 μm for the Rx, respectively. The VCSEL-to-POF coupling loss for the Tx and the POF-to-PD loss for the Rx were 3.25 dB and 1.35 dB at a wavelength of 850 nm, respectively. Subsequently, a high-speed signal at 3.2 Gb/s was satisfactorily delivered via the Tx and Rx modules over a temperature range of -30 to 70°C with no significant errors; the channel crosstalk was below -30 dB. Finally, the performance of the prepared modules was verified by transmitting a 1080p HDMI video supplied by a Bluelay player to an LCD TV.

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“…Optical interconnects have started to become a viable alternative to conventional copper based cables, which pose several critical issues in terms of bandwidth, electromagnetic interference, thermal management, and weight [1,2]. The availability of low-cost optical subassembly modules (OSAs) is essential to accelerating the penetration of optical interconnects into the market [3][4][5][6]. Such modules can be achieved by primarily reducing the cost of light sources and connecting fibers, and by facilitating the assembly procedures [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

CWDM based HDMI interconnect incorporating passively aligned POF linked optical subassembly modules

Lee

Son³

2011

Opt. Express

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A four-channel transmitter OSA (TOSA) and a receiver optical sub-assembly (ROSA) module were presented. They take advantage of a coarse WDM (CWDM) scheme, employing two types of VCSELs at 780 and 850 nm, where no wavelength filters are involved in the TOSA. The ROSA and TOSA were constructed through a fully passive alignment process using components produced by virtue of a cost effective plastic injection molding technique. In order to build a high quality optical HDMI interconnect, four channel optical links between these modules ware established via two graded-index plastic optical fibers (GI-POFs). The HDMI interconnect was thoroughly evaluated in terms of the alignment tolerance, the light beam propagation, and the data transmission capability. For the ROSA, the measured tolerance, as affected by the photodiode alignment, was ~45 μm and over 200 μm for the transverse and longitudinal directions, respectively. For the TOSA, the tolerance, which is mostly dependent upon the VCSEL alignment, was ~20 μm and more than 200 μm for the transverse and longitudinal directions, respectively. The beam profiles for the TOSA and ROSA were monitored to confirm their feasibility from the optical coupling perspective. A digital signal at 2.5 Gb/s was efficiently transmitted through the HDMI interconnect with a bit error ratio of below 10^-16. A 1080p HDMI signal from a Blu-ray player was delivered through the interconnect to an LCD monitor and successfully displayed a high quality video.

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Low-cost fabrication of optical subassemblies

Cited by 15 publications

References 7 publications

Laser Diode Modules: Optical Coupling And Parts Bonding

Laser Diode Modules: Optical Coupling And Parts Bonding

Ribbon plastic optical fiber linked optical transmitter and receiver modules featuring a high alignment tolerance

CWDM based HDMI interconnect incorporating passively aligned POF linked optical subassembly modules

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